{"id":23612,"date":"2023-10-10T22:39:00","date_gmt":"2023-10-10T14:39:00","guid":{"rendered":"https:\/\/www.ruoxue.org\/?p=23612"},"modified":"2023-10-10T22:53:35","modified_gmt":"2023-10-10T14:53:35","slug":"java-147-immutable-list-in-java-with-examples","status":"publish","type":"post","link":"https:\/\/www.ruoxue.org\/java-147-immutable-list-in-java-with-examples\/","title":{"rendered":"Immutable List in Java with Examples &#8211; Java 147"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"23612\" class=\"elementor elementor-23612\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5b68fba elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5b68fba\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-0cc3f4c\" data-id=\"0cc3f4c\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2a1cbd9 elementor-widget elementor-widget-heading\" data-id=\"2a1cbd9\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.23.0 - 25-07-2024 *\/\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_68_1 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.ruoxue.org\/java-147-immutable-list-in-java-with-examples\/#Immutable_List_in_Java_with_Examples\" title=\"Immutable List in Java with Examples\">Immutable List in Java with Examples<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.ruoxue.org\/java-147-immutable-list-in-java-with-examples\/#%E6%AA%94%E6%A1%88%E7%9B%AE%E9%8C%84\" title=\"\u6a94\u6848\u76ee\u9304\">\u6a94\u6848\u76ee\u9304<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ruoxue.org\/java-147-immutable-list-in-java-with-examples\/#%E5%96%AE%E5%85%83%E6%B8%AC%E8%A9%A6\" title=\"\u55ae\u5143\u6e2c\u8a66\">\u55ae\u5143\u6e2c\u8a66<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ruoxue.org\/java-147-immutable-list-in-java-with-examples\/#Fruit\" title=\"Fruit\">Fruit<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ruoxue.org\/java-147-immutable-list-in-java-with-examples\/#Arrays_asList\" title=\"Arrays_asList\">Arrays_asList<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.ruoxue.org\/java-147-immutable-list-in-java-with-examples\/#Collections_unmodifiableList\" title=\"Collections_unmodifiableList\">Collections_unmodifiableList<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.ruoxue.org\/java-147-immutable-list-in-java-with-examples\/#Collections_singletonList\" title=\"Collections_singletonList\">Collections_singletonList<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.ruoxue.org\/java-147-immutable-list-in-java-with-examples\/#ImmutableList_of\" title=\"ImmutableList_of\">ImmutableList_of<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.ruoxue.org\/java-147-immutable-list-in-java-with-examples\/#ImmutableList_copyOf\" title=\"ImmutableList_copyOf\">ImmutableList_copyOf<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.ruoxue.org\/java-147-immutable-list-in-java-with-examples\/#ImmutableList_builder\" title=\"ImmutableList_builder\">ImmutableList_builder<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.ruoxue.org\/java-147-immutable-list-in-java-with-examples\/#ListUtils_unmodifiableList\" title=\"ListUtils_unmodifiableList\">ListUtils_unmodifiableList<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.ruoxue.org\/java-147-immutable-list-in-java-with-examples\/#ImmutableListWithExamplesTestjava\" title=\"ImmutableListWithExamplesTest.java\">ImmutableListWithExamplesTest.java<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.ruoxue.org\/java-147-immutable-list-in-java-with-examples\/#%E5%BF%83%E5%BE%97%E5%88%86%E4%BA%AB\" title=\"\u5fc3\u5f97\u5206\u4eab\">\u5fc3\u5f97\u5206\u4eab<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.ruoxue.org\/java-147-immutable-list-in-java-with-examples\/#%E5%8E%9F%E7%A2%BC%E4%B8%8B%E8%BC%89\" title=\"\u539f\u78bc\u4e0b\u8f09\">\u539f\u78bc\u4e0b\u8f09<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Immutable_List_in_Java_with_Examples\"><\/span>Immutable List in Java with Examples<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-125eb99 elementor-widget elementor-widget-text-editor\" data-id=\"125eb99\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.23.0 - 25-07-2024 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p>\u4ecb\u7d39\u4f7f\u7528 JDK\u3001Guava \u4ee5\u53ca Apache Collections 4 \u4f86\u5efa\u7acb\u7121\u6cd5\u4fee\u6539\u7684\u96c6\u5408\uff0c\u6b64\u96c6\u5408\u662f\u7dda\u7a0b\u5b89\u5168\u7684\uff0c\u8a18\u61b6\u6548\u7387\u5f88\u9ad8\uff0c \u7531\u65bc\u662f\u4e0d\u53ef\u8b8a\u7684\uff0c\u56e0\u6b64\u53ef\u4ee5\u6beb\u7121\u554f\u984c\u5730\u50b3\u905e\u7d66\u7b2c\u4e09\u65b9\u7a0b\u5f0f\u5eab\uff0cImmutable List in Java \u672c\u7bc7\u589e\u52a0\u4e86\u7bc4\u4f8b\uff0c\u4e26\u900f\u904e\u55ae\u5143\u6e2c\u8a66\u4f86\u9a57\u8b49\u7522\u51fa\u7d50\u679c\u3002<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-16baa92 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"16baa92\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f787747\" data-id=\"f787747\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c8ca01c elementor-widget elementor-widget-heading\" data-id=\"c8ca01c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"%E6%AA%94%E6%A1%88%E7%9B%AE%E9%8C%84\"><\/span>\u6a94\u6848\u76ee\u9304<span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f8a9883 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"f8a9883\" data-element_type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-wiki'>.\/\r\n   +- src\r\n       +- test\r\n       |   +- org\r\n       |       +- ruoxue\r\n       |           +- java_147\r\n       |               +- list\r\n       |                   +- ImmutableListWithExamplesTest.java   <\/code><\/pre>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-11971ce elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"11971ce\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-a17061f\" data-id=\"a17061f\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-29d5bdb elementor-widget elementor-widget-heading\" data-id=\"29d5bdb\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"%E5%96%AE%E5%85%83%E6%B8%AC%E8%A9%A6\"><\/span>\u55ae\u5143\u6e2c\u8a66<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4a1ce45 elementor-widget elementor-widget-text-editor\" data-id=\"4a1ce45\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>List Immutable Java \u63d0\u4f9b\u5efa\u7acb\u4e0d\u53ef\u8b8a\u7684\u7684\u96c6\u5408\u3002<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-35221d1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"35221d1\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-28ffeb7\" data-id=\"28ffeb7\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2e99e0b elementor-widget elementor-widget-heading\" data-id=\"2e99e0b\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Fruit\"><\/span>Fruit<span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-07e87f3 elementor-widget elementor-widget-text-editor\" data-id=\"07e87f3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p class=\"p1\">\u5efa\u7acb Fruit \u985e\u5225\uff0c\u8986\u5beb toString \uff0c\u5b9a\u7fa9\u5c6c\u6027\u548c\u65b9\u6cd5\uff0c\u7528\u4f86\u5efa\u7acb\u4e00\u500b\u7269\u4ef6\u3002<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-30f0325 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"30f0325\" data-element_type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<pre class='line-numbers theme-tomorrow-night' data-show-toolbar='yes'><code class='language-java'>\t@NoArgsConstructor\r\n\t@Getter\r\n\t@Setter\r\n\t@Builder\r\n\tpublic static class Fruit {\r\n\r\n\t\tprivate String name;\r\n\t\tprivate double quantity;\r\n\t\tprivate int type;\r\n\r\n\t\tpublic Fruit(String name, double quantity, int type) {\r\n\t\t\tthis.name = name;\r\n\t\t\tthis.quantity = quantity;\r\n\t\t\tthis.type = type;\r\n\t\t}\r\n\r\n\t\tpublic String toString() {\r\n\t\t\tToStringBuilder builder = new ToStringBuilder(this, ToStringStyle.JSON_STYLE);\r\n\t\t\tbuilder.appendSuper(super.toString());\r\n\t\t\tbuilder.append(&quot;name&quot;, name);\r\n\t\t\tbuilder.append(&quot;quantity&quot;, quantity);\r\n\t\t\tbuilder.append(&quot;type&quot;, type);\r\n\t\t\treturn builder.toString();\r\n\t\t}\r\n\t}<\/code><\/pre>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-52d5010 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"52d5010\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2e71148\" data-id=\"2e71148\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-dabacf4 elementor-widget elementor-widget-heading\" data-id=\"dabacf4\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Arrays_asList\"><\/span>Arrays_asList<span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0f077ff elementor-widget elementor-widget-text-editor\" data-id=\"0f077ff\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p class=\"p1\">\u5efa\u7acb\u4e00\u500b List \uff0c\u4f7f\u7528 Arrats asList \u521d\u59cb\u5316\u4e09\u500b\u5143\u7d20\uff0c\u70ba\u4e0d\u53ef\u8b8a\u7684\u96c6\u5408\uff0c\u82e5\u64cd\u4f5c\u65b0\u589e\u3001\u522a\u9664\u7b49\u65b9\u6cd5\uff0c\u6703\u62cb\u51fa\u4f8b\u5916\u3002<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b715d6c elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"b715d6c\" data-element_type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<pre class='line-numbers theme-tomorrow-night' data-show-toolbar='yes'><code class='language-java'>\t@Test\r\n\tpublic void Arrays_asList() {\r\n\t\tList&lt;String&gt; list = Arrays.asList(&quot;Apple&quot;, &quot;Banana&quot;, &quot;Cherry&quot;);\r\n\t\tassertThatCode(() -&gt; list.add(&quot;Kiwifruit&quot;)).isInstanceOf(UnsupportedOperationException.class);\r\n\t\tSystem.out.println(list);\r\n\t\tassertThat(list).hasSize(3);\r\n\r\n\t\tList&lt;Integer&gt; intList = Arrays.asList(Integer.MAX_VALUE, -1, 3);\r\n\t\tassertThatCode(() -&gt; intList.add(101)).isInstanceOf(UnsupportedOperationException.class);\r\n\t\tSystem.out.println(intList);\r\n\t\tassertThat(intList).hasSize(3);\r\n\t}<\/code><\/pre>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f594189 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"f594189\" data-element_type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-wiki'>[{&quot;name&quot;:&quot;Apple&quot;,&quot;quantity&quot;:1.7976931348623157E308,&quot;type&quot;:1}, {&quot;name&quot;:&quot;Banana&quot;,&quot;quantity&quot;:-1.0,&quot;type&quot;:3}, {&quot;name&quot;:&quot;Cherry&quot;,&quot;quantity&quot;:3.0,&quot;type&quot;:1}]<\/code><\/pre>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-176cdd0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"176cdd0\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-a9bbc80\" data-id=\"a9bbc80\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ed98c6e elementor-widget elementor-widget-heading\" data-id=\"ed98c6e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Collections_unmodifiableList\"><\/span>Collections_unmodifiableList<span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-99593ca elementor-widget elementor-widget-text-editor\" data-id=\"99593ca\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p class=\"p1\">List Immutable Java \u5efa\u7acb\u4e00\u500b List \uff0c\u4f7f\u7528 Collections unmodifiableList \u521d\u59cb\u5316\u4e09\u500b\u5143\u7d20\uff0c\u70ba\u4e0d\u53ef\u8b8a\u7684\u96c6\u5408\uff0c\u82e5\u64cd\u4f5c\u65b0\u589e\u3001\u522a\u9664\u7b49\u65b9\u6cd5\uff0c\u6703\u62cb\u51fa\u4f8b\u5916\u3002<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e6d0068 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"e6d0068\" data-element_type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<pre class='line-numbers theme-tomorrow-night' data-show-toolbar='yes'><code class='language-java'>\t@Test\r\n\tpublic void Collections_unmodifiableList() {\r\n\t\tFruit apple = new Fruit(&quot;Apple&quot;, Double.MAX_VALUE, 1);\r\n\t\tFruit banana = new Fruit(&quot;Banana&quot;, -1, 3);\r\n\t\tFruit cherry = new Fruit(&quot;Cherry&quot;, 3, 1);\r\n\t\tList&lt;Fruit&gt; list = new ArrayList&lt;&gt;();\r\n\t\tlist.add(apple);\r\n\t\tlist.add(banana);\r\n\t\tlist.add(cherry);\r\n\t\tList&lt;Fruit&gt; result = Collections.unmodifiableList(list);\r\n\t\tFruit kiwifruit = new Fruit(&quot;Kiwifruit&quot;, 101, 2);\r\n\t\tassertThatCode(() -&gt; result.add(kiwifruit)).isInstanceOf(UnsupportedOperationException.class);\r\n\t\tSystem.out.println(result);\r\n\t\tassertThat(result).hasSize(3);\r\n\t}<\/code><\/pre>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a02f69f elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"a02f69f\" data-element_type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-wiki'>[{&quot;name&quot;:&quot;Apple&quot;,&quot;quantity&quot;:1.7976931348623157E308,&quot;type&quot;:1}, {&quot;name&quot;:&quot;Banana&quot;,&quot;quantity&quot;:-1.0,&quot;type&quot;:3}, {&quot;name&quot;:&quot;Cherry&quot;,&quot;quantity&quot;:3.0,&quot;type&quot;:1}]<\/code><\/pre>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4efe37f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4efe37f\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-83a8b65\" data-id=\"83a8b65\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b52a88f elementor-widget elementor-widget-heading\" data-id=\"b52a88f\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Collections_singletonList\"><\/span>Collections_singletonList<span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6b6f26b elementor-widget elementor-widget-text-editor\" data-id=\"6b6f26b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p class=\"p1\">List Immutable Java \u5efa\u7acb\u4e00\u500b List \uff0c\u4f7f\u7528 Collections singletonList \u521d\u59cb\u5316\u4e00\u500b\u5143\u7d20\uff0c\u53ea\u80fd\u5305\u542b\u4e00\u500b\u5143\u7d20\uff0c\u70ba\u4e0d\u53ef\u8b8a\u7684\u96c6\u5408\uff0c\u82e5\u64cd\u4f5c\u65b0\u589e\u3001\u522a\u9664\u7b49\u65b9\u6cd5\uff0c\u6703\u62cb\u51fa\u4f8b\u5916\u3002<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3b3195c elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"3b3195c\" data-element_type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<pre class='line-numbers theme-tomorrow-night' data-show-toolbar='yes'><code class='language-java'>\t@Test\r\n\tpublic void Collections_singletonList() {\r\n\t\tFruit apple = new Fruit(&quot;Apple&quot;, Double.MAX_VALUE, 1);\r\n\t\tList&lt;Fruit&gt; result = Collections.singletonList(apple);\r\n\t\tFruit banana = new Fruit(&quot;Banana&quot;, -1, 3);\r\n\t\tassertThatCode(() -&gt; result.add(banana)).isInstanceOf(UnsupportedOperationException.class);\r\n\t\tSystem.out.println(result);\r\n\t\tassertThat(result).hasSize(1);\r\n\t}\r\n<\/code><\/pre>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-51512a0 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"51512a0\" data-element_type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-wiki'>[{&quot;name&quot;:&quot;Apple&quot;,&quot;quantity&quot;:1.7976931348623157E308,&quot;type&quot;:1}]<\/code><\/pre>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-0a7949a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"0a7949a\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5fd8136\" data-id=\"5fd8136\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5bede57 elementor-widget elementor-widget-heading\" data-id=\"5bede57\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"ImmutableList_of\"><\/span>ImmutableList_of<span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f94380d elementor-widget elementor-widget-text-editor\" data-id=\"f94380d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p class=\"p1\">List Immutable Java \u5efa\u7acb\u4e00\u500b List \uff0c\u4f7f\u7528 Guava ImmutableList of \u521d\u59cb\u5316\u4e09\u500b\u5143\u7d20\uff0c\u70ba\u4e0d\u53ef\u8b8a\u7684\u96c6\u5408\uff0c\u82e5\u64cd\u4f5c\u65b0\u589e\u3001\u522a\u9664\u7b49\u65b9\u6cd5\uff0c\u6703\u62cb\u51fa\u4f8b\u5916\u3002<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c38a72c elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"c38a72c\" data-element_type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<pre class='line-numbers theme-tomorrow-night' data-show-toolbar='yes'><code class='language-java'>\t@Test\r\n\tpublic void ImmutableList_of() {\r\n\t\tFruit apple = new Fruit(&quot;Apple&quot;, Double.MAX_VALUE, 1);\r\n\t\tFruit banana = new Fruit(&quot;Banana&quot;, -1, 3);\r\n\t\tFruit cherry = new Fruit(&quot;Cherry&quot;, 3, 1);\r\n\t\tList&lt;Fruit&gt; list = ImmutableList.of(apple, banana, cherry);\r\n\t\tFruit kiwifruit = new Fruit(&quot;Kiwifruit&quot;, 101, 2);\r\n\t\tassertThatCode(() -&gt; list.add(kiwifruit)).isInstanceOf(UnsupportedOperationException.class);\r\n\t\tSystem.out.println(list);\r\n\t\tassertThat(list).hasSize(3);\r\n\t}<\/code><\/pre>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d5a515e elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"d5a515e\" data-element_type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-wiki'>[{&quot;name&quot;:&quot;Apple&quot;,&quot;quantity&quot;:1.7976931348623157E308,&quot;type&quot;:1}, {&quot;name&quot;:&quot;Banana&quot;,&quot;quantity&quot;:-1.0,&quot;type&quot;:3}, {&quot;name&quot;:&quot;Cherry&quot;,&quot;quantity&quot;:3.0,&quot;type&quot;:1}]<\/code><\/pre>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-215ad7a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"215ad7a\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7fc2783\" data-id=\"7fc2783\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d1f2ed1 elementor-widget elementor-widget-heading\" data-id=\"d1f2ed1\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"ImmutableList_copyOf\"><\/span>ImmutableList_copyOf<span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7bef99a elementor-widget elementor-widget-text-editor\" data-id=\"7bef99a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p class=\"p1\">List Immutable Java \u5efa\u7acb\u4e00\u500b List \uff0c\u4f7f\u7528 Guava ImmutableList copyOf \u521d\u59cb\u5316\u4e09\u500b\u5143\u7d20\uff0c\u70ba\u4e0d\u53ef\u8b8a\u7684\u96c6\u5408\uff0c\u82e5\u64cd\u4f5c\u65b0\u589e\u3001\u522a\u9664\u7b49\u65b9\u6cd5\uff0c\u6703\u62cb\u51fa\u4f8b\u5916\u3002<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7ded0da elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"7ded0da\" data-element_type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<pre class='line-numbers theme-tomorrow-night' data-show-toolbar='yes'><code class='language-java'>\t@Test\r\n\tpublic void ImmutableList_copyOf() {\r\n\t\tFruit apple = new Fruit(&quot;Apple&quot;, Double.MAX_VALUE, 1);\r\n\t\tFruit banana = new Fruit(&quot;Banana&quot;, -1, 3);\r\n\t\tFruit cherry = new Fruit(&quot;Cherry&quot;, 3, 1);\r\n\t\tList&lt;Fruit&gt; list = new ArrayList&lt;&gt;();\r\n\t\tlist.add(apple);\r\n\t\tlist.add(banana);\r\n\t\tlist.add(cherry);\r\n\t\tList&lt;Fruit&gt; result = ImmutableList.copyOf(list);\r\n\t\tFruit kiwifruit = new Fruit(&quot;Kiwifruit&quot;, 101, 2);\r\n\t\tassertThatCode(() -&gt; result.add(kiwifruit)).isInstanceOf(UnsupportedOperationException.class);\r\n\t\tSystem.out.println(result);\r\n\t\tassertThat(result).hasSize(3);\r\n\t}<\/code><\/pre>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ca69079 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"ca69079\" data-element_type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-wiki'>[{&quot;name&quot;:&quot;Apple&quot;,&quot;quantity&quot;:1.7976931348623157E308,&quot;type&quot;:1}, {&quot;name&quot;:&quot;Banana&quot;,&quot;quantity&quot;:-1.0,&quot;type&quot;:3}, {&quot;name&quot;:&quot;Cherry&quot;,&quot;quantity&quot;:3.0,&quot;type&quot;:1}]<\/code><\/pre>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1949669 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1949669\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8aca1e1\" data-id=\"8aca1e1\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-90c0da0 elementor-widget elementor-widget-heading\" data-id=\"90c0da0\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"ImmutableList_builder\"><\/span>ImmutableList_builder<span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b49b315 elementor-widget elementor-widget-text-editor\" data-id=\"b49b315\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p class=\"p1\">Java Immutable List \u5efa\u7acb\u4e00\u500b List \uff0c\u4f7f\u7528 Guava ImmutableList builder \u521d\u59cb\u5316\u4e09\u500b\u5143\u7d20\uff0c\u70ba\u4e0d\u53ef\u8b8a\u7684\u96c6\u5408\uff0c\u82e5\u64cd\u4f5c\u65b0\u589e\u3001\u522a\u9664\u7b49\u65b9\u6cd5\uff0c\u6703\u62cb\u51fa\u4f8b\u5916\u3002<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-762c5aa elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"762c5aa\" data-element_type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<pre class='line-numbers theme-tomorrow-night' data-show-toolbar='yes'><code class='language-java'>\t@Test\r\n\tpublic void ImmutableList_builder() {\r\n\t\tFruit apple = new Fruit(&quot;Apple&quot;, Double.MAX_VALUE, 1);\r\n\t\tFruit banana = new Fruit(&quot;Banana&quot;, -1, 3);\r\n\t\tFruit cherry = new Fruit(&quot;Cherry&quot;, 3, 1);\r\n\t\tList&lt;Fruit&gt; list = new ArrayList&lt;&gt;();\r\n\t\tlist.add(apple);\r\n\t\tlist.add(banana);\r\n\t\tlist.add(cherry);\r\n\t\tList&lt;Fruit&gt; result = ImmutableList.&lt;Fruit&gt;builder().addAll(list).build();\r\n\t\tFruit kiwifruit = new Fruit(&quot;Kiwifruit&quot;, 101, 2);\r\n\t\tassertThatCode(() -&gt; result.add(kiwifruit)).isInstanceOf(UnsupportedOperationException.class);\r\n\t\tSystem.out.println(result);\r\n\t\tassertThat(result).hasSize(3);\r\n\t}<\/code><\/pre>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0728358 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"0728358\" data-element_type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-wiki'>[{&quot;name&quot;:&quot;Apple&quot;,&quot;quantity&quot;:1.7976931348623157E308,&quot;type&quot;:1}, {&quot;name&quot;:&quot;Banana&quot;,&quot;quantity&quot;:-1.0,&quot;type&quot;:3}, {&quot;name&quot;:&quot;Cherry&quot;,&quot;quantity&quot;:3.0,&quot;type&quot;:1}]<\/code><\/pre>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-25e7cc7 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"25e7cc7\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-c2c8bbf\" data-id=\"c2c8bbf\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5a61477 elementor-widget elementor-widget-heading\" data-id=\"5a61477\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"ListUtils_unmodifiableList\"><\/span>ListUtils_unmodifiableList<span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2697657 elementor-widget elementor-widget-text-editor\" data-id=\"2697657\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p class=\"p1\">Java Immutable List \u5efa\u7acb\u4e00\u500b List \uff0c\u4f7f\u7528 Apache Collections4 \u5957\u4ef6\u4e2d\u7684 ListUtils unmodifiableList \u521d\u59cb\u5316\u4e09\u500b\u5143\u7d20\uff0c\u70ba\u4e0d\u53ef\u8b8a\u7684\u96c6\u5408\uff0c\u82e5\u64cd\u4f5c\u65b0\u589e\u3001\u522a\u9664\u7b49\u65b9\u6cd5\uff0c\u6703\u62cb\u51fa\u4f8b\u5916\u3002<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ea013b2 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"ea013b2\" data-element_type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<pre class='line-numbers theme-tomorrow-night' data-show-toolbar='yes'><code class='language-java'>\t@Test\r\n\tpublic void ListUtils_unmodifiableList() {\r\n\t\tFruit apple = new Fruit(&quot;Apple&quot;, Double.MAX_VALUE, 1);\r\n\t\tFruit banana = new Fruit(&quot;Banana&quot;, -1, 3);\r\n\t\tFruit cherry = new Fruit(&quot;Cherry&quot;, 3, 1);\r\n\t\tList&lt;Fruit&gt; list = new ArrayList&lt;&gt;();\r\n\t\tlist.add(apple);\r\n\t\tlist.add(banana);\r\n\t\tlist.add(cherry);\r\n\t\tList&lt;Fruit&gt; result = ListUtils.unmodifiableList(list);\r\n\t\tFruit kiwifruit = new Fruit(&quot;Kiwifruit&quot;, 101, 2);\r\n\t\tassertThatCode(() -&gt; result.add(kiwifruit)).isInstanceOf(UnsupportedOperationException.class);\r\n\t\tSystem.out.println(result);\r\n\t\tassertThat(result).hasSize(3);\r\n\t}<\/code><\/pre>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1a10a5a elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"1a10a5a\" data-element_type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<pre class='line-numbers theme-okaidia' data-show-toolbar='yes'><code class='language-wiki'>[{&quot;name&quot;:&quot;Apple&quot;,&quot;quantity&quot;:1.7976931348623157E308,&quot;type&quot;:1}, {&quot;name&quot;:&quot;Banana&quot;,&quot;quantity&quot;:-1.0,&quot;type&quot;:3}, {&quot;name&quot;:&quot;Cherry&quot;,&quot;quantity&quot;:3.0,&quot;type&quot;:1}]<\/code><\/pre>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-588c89b elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"588c89b\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-e24f3db\" data-id=\"e24f3db\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9c000d2 elementor-widget elementor-widget-heading\" data-id=\"9c000d2\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"ImmutableListWithExamplesTestjava\"><\/span>ImmutableListWithExamplesTest.java<span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7ff7b12 elementor-widget elementor-widget-text-editor\" data-id=\"7ff7b12\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p class=\"p1\">Java Immutable List \u65b0\u589e\u55ae\u5143\u6e2c\u8a66\uff0c\u9a57\u8b49\u662f\u5426\u7b26\u5408\u9810\u671f\u3002<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0c3fff6 elementor-widget elementor-widget-code-block-for-elementor\" data-id=\"0c3fff6\" data-element_type=\"widget\" data-widget_type=\"code-block-for-elementor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<pre class='line-numbers theme-tomorrow-night' data-show-toolbar='yes'><code class='language-java'>package org.ruoxue.java_147.list;\r\n\r\nimport static org.assertj.core.api.Assertions.assertThat;\r\nimport static org.assertj.core.api.Assertions.assertThatCode;\r\n\r\nimport java.util.ArrayList;\r\nimport java.util.Arrays;\r\nimport java.util.Collections;\r\nimport java.util.List;\r\n\r\nimport org.apache.commons.collections4.ListUtils;\r\nimport org.apache.commons.lang3.builder.ToStringBuilder;\r\nimport org.apache.commons.lang3.builder.ToStringStyle;\r\nimport org.junit.Test;\r\n\r\nimport com.google.common.collect.ImmutableList;\r\n\r\nimport lombok.Builder;\r\nimport lombok.Getter;\r\nimport lombok.NoArgsConstructor;\r\nimport lombok.Setter;\r\n\r\npublic class ImmutableListWithExamplesTest {\r\n\r\n\t@NoArgsConstructor\r\n\t@Getter\r\n\t@Setter\r\n\t@Builder\r\n\tpublic static class Fruit {\r\n\r\n\t\tprivate String name;\r\n\t\tprivate double quantity;\r\n\t\tprivate int type;\r\n\r\n\t\tpublic Fruit(String name, double quantity, int type) {\r\n\t\t\tthis.name = name;\r\n\t\t\tthis.quantity = quantity;\r\n\t\t\tthis.type = type;\r\n\t\t}\r\n\r\n\t\tpublic String toString() {\r\n\t\t\tToStringBuilder builder = new ToStringBuilder(this, ToStringStyle.JSON_STYLE);\r\n\t\t\tbuilder.appendSuper(super.toString());\r\n\t\t\tbuilder.append(&quot;name&quot;, name);\r\n\t\t\tbuilder.append(&quot;quantity&quot;, quantity);\r\n\t\t\tbuilder.append(&quot;type&quot;, type);\r\n\t\t\treturn builder.toString();\r\n\t\t}\r\n\t}\r\n\r\n\t@Test\r\n\tpublic void Arrays_asList() {\r\n\t\tFruit apple = new Fruit(&quot;Apple&quot;, Double.MAX_VALUE, 1);\r\n\t\tFruit banana = new Fruit(&quot;Banana&quot;, -1, 3);\r\n\t\tFruit cherry = new Fruit(&quot;Cherry&quot;, 3, 1);\r\n\t\tList&lt;Fruit&gt; list = Arrays.asList(apple, banana, cherry);\r\n\t\tFruit kiwifruit = new Fruit(&quot;Kiwifruit&quot;, 101, 2);\r\n\t\tassertThatCode(() -&gt; list.add(kiwifruit)).isInstanceOf(UnsupportedOperationException.class);\r\n\t\tSystem.out.println(list);\r\n\t\tassertThat(list).hasSize(3);\r\n\t}\r\n\r\n\t@Test\r\n\tpublic void Collections_unmodifiableList() {\r\n\t\tFruit apple = new Fruit(&quot;Apple&quot;, Double.MAX_VALUE, 1);\r\n\t\tFruit banana = new Fruit(&quot;Banana&quot;, -1, 3);\r\n\t\tFruit cherry = new Fruit(&quot;Cherry&quot;, 3, 1);\r\n\t\tList&lt;Fruit&gt; list = new ArrayList&lt;&gt;();\r\n\t\tlist.add(apple);\r\n\t\tlist.add(banana);\r\n\t\tlist.add(cherry);\r\n\t\tList&lt;Fruit&gt; result = Collections.unmodifiableList(list);\r\n\t\tFruit kiwifruit = new Fruit(&quot;Kiwifruit&quot;, 101, 2);\r\n\t\tassertThatCode(() -&gt; result.add(kiwifruit)).isInstanceOf(UnsupportedOperationException.class);\r\n\t\tSystem.out.println(result);\r\n\t\tassertThat(result).hasSize(3);\r\n\t}\r\n\r\n\t@Test\r\n\tpublic void ImmutableList_of() {\r\n\t\tFruit apple = new Fruit(&quot;Apple&quot;, Double.MAX_VALUE, 1);\r\n\t\tFruit banana = new Fruit(&quot;Banana&quot;, -1, 3);\r\n\t\tFruit cherry = new Fruit(&quot;Cherry&quot;, 3, 1);\r\n\t\tList&lt;Fruit&gt; list = ImmutableList.of(apple, banana, cherry);\r\n\t\tFruit kiwifruit = new Fruit(&quot;Kiwifruit&quot;, 101, 2);\r\n\t\tassertThatCode(() -&gt; list.add(kiwifruit)).isInstanceOf(UnsupportedOperationException.class);\r\n\t\tSystem.out.println(list);\r\n\t\tassertThat(list).hasSize(3);\r\n\t}\r\n\r\n\t@Test\r\n\tpublic void ImmutableList_copyOf() {\r\n\t\tFruit apple = new Fruit(&quot;Apple&quot;, Double.MAX_VALUE, 1);\r\n\t\tFruit banana = new Fruit(&quot;Banana&quot;, -1, 3);\r\n\t\tFruit cherry = new Fruit(&quot;Cherry&quot;, 3, 1);\r\n\t\tList&lt;Fruit&gt; list = new ArrayList&lt;&gt;();\r\n\t\tlist.add(apple);\r\n\t\tlist.add(banana);\r\n\t\tlist.add(cherry);\r\n\t\tList&lt;Fruit&gt; result = ImmutableList.copyOf(list);\r\n\t\tFruit kiwifruit = new Fruit(&quot;Kiwifruit&quot;, 101, 2);\r\n\t\tassertThatCode(() -&gt; result.add(kiwifruit)).isInstanceOf(UnsupportedOperationException.class);\r\n\t\tSystem.out.println(result);\r\n\t\tassertThat(result).hasSize(3);\r\n\t}\r\n\r\n\t@Test\r\n\tpublic void ImmutableList_builder() {\r\n\t\tFruit apple = new Fruit(&quot;Apple&quot;, Double.MAX_VALUE, 1);\r\n\t\tFruit banana = new Fruit(&quot;Banana&quot;, -1, 3);\r\n\t\tFruit cherry = new Fruit(&quot;Cherry&quot;, 3, 1);\r\n\t\tList&lt;Fruit&gt; list = new ArrayList&lt;&gt;();\r\n\t\tlist.add(apple);\r\n\t\tlist.add(banana);\r\n\t\tlist.add(cherry);\r\n\t\tList&lt;Fruit&gt; result = ImmutableList.&lt;Fruit&gt;builder().addAll(list).build();\r\n\t\tFruit kiwifruit = new Fruit(&quot;Kiwifruit&quot;, 101, 2);\r\n\t\tassertThatCode(() -&gt; result.add(kiwifruit)).isInstanceOf(UnsupportedOperationException.class);\r\n\t\tSystem.out.println(result);\r\n\t\tassertThat(result).hasSize(3);\r\n\t}\r\n\r\n\t@Test\r\n\tpublic void ListUtils_unmodifiableList() {\r\n\t\tFruit apple = new Fruit(&quot;Apple&quot;, Double.MAX_VALUE, 1);\r\n\t\tFruit banana = new Fruit(&quot;Banana&quot;, -1, 3);\r\n\t\tFruit cherry = new Fruit(&quot;Cherry&quot;, 3, 1);\r\n\t\tList&lt;Fruit&gt; list = new ArrayList&lt;&gt;();\r\n\t\tlist.add(apple);\r\n\t\tlist.add(banana);\r\n\t\tlist.add(cherry);\r\n\t\tList&lt;Fruit&gt; result = ListUtils.unmodifiableList(list);\r\n\t\tFruit kiwifruit = new Fruit(&quot;Kiwifruit&quot;, 101, 2);\r\n\t\tassertThatCode(() -&gt; result.add(kiwifruit)).isInstanceOf(UnsupportedOperationException.class);\r\n\t\tSystem.out.println(result);\r\n\t\tassertThat(result).hasSize(3);\r\n\t}\r\n}\r\n<\/code><\/pre>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-40e13e6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"40e13e6\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-cb3c9b1\" data-id=\"cb3c9b1\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4400a84 elementor-widget elementor-widget-heading\" data-id=\"4400a84\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"%E5%BF%83%E5%BE%97%E5%88%86%E4%BA%AB\"><\/span>\u5fc3\u5f97\u5206\u4eab<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d050388 elementor-widget elementor-widget-text-editor\" data-id=\"d050388\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p class=\"p1\">Java Immutable List Example \u63d0\u4f9b\u4e86\u5e7e\u7a2e\u4e0d\u53ef\u8b8a\u96c6\u5408\u5e38\u898b\u65b9\u6cd5\u7684\u64cd\u4f5c\u7bc4\u4f8b\uff0c\u5728\u61c9\u7528\u4e0a\u76f8\u7576\u5ee3\u6cdb\uff0c\u719f\u6089 Java Immutable List \u9019\u4e9b\u65b9\u6cd5\u7684\u64cd\u4f5c\uff0c\u50cf\u662f\uff1a Arrays.asList \u3001 Collections.unmodifiableList \u3001 ImmutableList.of \u3001 ListUtils.unmodifiableList \u7b49\u65b9\u6cd5\uff0c\u66f4\u65b9\u4fbf\u7c21\u6613\u5730\u5efa\u7acb\u96c6\u5408\u3002<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1a0cbe7 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"1a0cbe7\" data-element_type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<link rel=\"stylesheet\" href=\"https:\/\/www.ruoxue.org\/wp-content\/plugins\/elementor\/assets\/css\/widget-icon-list.min.css\">\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.ruoxue.org\/java-147-java-immutable-list\/\" target=\"_blank\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-dot-circle\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Java Immutable List<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/www.ruoxue.org\/java-147-java-remove-elements-from-list\/\" target=\"_blank\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-dot-circle\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Java Remove Elements From List<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6f38372 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6f38372\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-eb15993\" data-id=\"eb15993\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-131efa7 elementor-widget elementor-widget-heading\" data-id=\"131efa7\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"%E5%8E%9F%E7%A2%BC%E4%B8%8B%E8%BC%89\"><\/span>\u539f\u78bc\u4e0b\u8f09<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b4f3bd4 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"b4f3bd4\" data-element_type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/github.com\/ruoxueorg\/java-147\/tree\/main\/src\/test\/java\/org\/ruoxue\/java_147\/list\" target=\"_blank\" rel=\"noopener\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fab fa-github\"><\/i>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">GitHub - ruoxueorg<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Immutable List in Java with Examples \u4ecb\u7d39\u4f7f\u7528 JDK\u3001Guava \u4ee5\u53ca Apache Collections 4 \u4f86\u5efa\u7acb\u7121\u6cd5\u4fee\u6539\u7684\u96c6\u5408\uff0c\u6b64\u96c6\u5408\u662f\u7dda\u7a0b\u5b89\u5168\u7684\uff0c\u8a18\u61b6\u6548\u7387\u5f88\u9ad8\uff0c \u7531\u65bc\u662f\u4e0d\u53ef\u8b8a\u7684\uff0c\u56e0\u6b64\u53ef\u4ee5\u6beb\u7121\u554f\u984c\u5730\u50b3\u905e\u7d66\u7b2c\u4e09\u65b9\u7a0b\u5f0f\u5eab\uff0cImmutable List in Java \u672c\u7bc7\u589e\u52a0\u4e86\u7bc4\u4f8b\uff0c\u4e26\u900f\u904e JUnit 4 \u55ae\u5143\u6e2c\u8a66\u4f86\u9a57\u8b49\u7522\u51fa\u7d50\u679c\u3002<\/p>\n","protected":false},"author":1,"featured_media":23596,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,20,352],"tags":[359,360,89],"class_list":["post-23612","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-rd","category-java","category-java-list","tag-collection","tag-immutable","tag-list","entry","has-media"],"_links":{"self":[{"href":"https:\/\/www.ruoxue.org\/wp-json\/wp\/v2\/posts\/23612","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ruoxue.org\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ruoxue.org\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ruoxue.org\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ruoxue.org\/wp-json\/wp\/v2\/comments?post=23612"}],"version-history":[{"count":10,"href":"https:\/\/www.ruoxue.org\/wp-json\/wp\/v2\/posts\/23612\/revisions"}],"predecessor-version":[{"id":23635,"href":"https:\/\/www.ruoxue.org\/wp-json\/wp\/v2\/posts\/23612\/revisions\/23635"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ruoxue.org\/wp-json\/wp\/v2\/media\/23596"}],"wp:attachment":[{"href":"https:\/\/www.ruoxue.org\/wp-json\/wp\/v2\/media?parent=23612"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ruoxue.org\/wp-json\/wp\/v2\/categories?post=23612"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ruoxue.org\/wp-json\/wp\/v2\/tags?post=23612"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}