{"id":31720,"date":"2023-07-28T06:59:02","date_gmt":"2023-04-04T22:54:39","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e8%80%83%e8%99%91java%e4%b8%ad%e7%9a%84pair%e7%b1%bb\/"},"modified":"2024-04-30T15:43:07","modified_gmt":"2024-04-30T07:43:07","slug":"%e8%80%83%e8%99%91java%e4%b8%ad%e7%9a%84pair%e7%b1%bb","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e8%80%83%e8%99%91java%e4%b8%ad%e7%9a%84pair%e7%b1%bb\/","title":{"rendered":"\u8003\u8651Java\u4e2d\u7684Pair\u7c7b"},"content":{"rendered":"<h3>\u80cc\u666f &#8211; (background)<\/h3>\n<p>\u5982\u679c\u60a8\u53ea\u9700\u8981Key\u548cValue\u7684\u6570\u636e\uff0c\u60a8\u4f1a\u7528\u4ec0\u4e48\u6765\u5b9e\u73b0\u5b83\u5462\uff1f\u5728Java\u4e2d\uff0c\u4f7f\u7528Map\u662f\u6ca1\u6709\u95ee\u9898\u7684\uff0c\u4f46\u5e76\u4e0d\u662f\u4e00\u79cd\u5f88\u667a\u80fd\u7684\u65b9\u5f0f\u3002<br \/>\n\u5728Java SE\u4e2d\u5e76\u6ca1\u6709\u5b9e\u73b0Pair\uff08\u5e76\u975e\u5b8c\u5168\u6ca1\u6709\uff0c\u4f46\u5e76\u4e0d\u4e3a\u4eba\u6240\u77e5\uff09\uff0c\u6240\u4ee5\u6211\u67e5\u9605\u4e86\u4e00\u4e9b\u5f00\u6e90\u8f6f\u4ef6\u3002<\/p>\n<h3>\u62bd\u8c61\u5730\u56feSimpleEntry<\/h3>\n<p>\u5b9e\u9645\u4e0a\uff0c\u4ece1.6\u7248\u672c\u5f00\u59cb\uff0c\u5df2\u7ecf\u63d0\u4f9b\u4e86\u4e00\u4e2a\u7528\u4e8ePair\u7684\u6807\u51c6API\u3002\u8fd9\u4e2aAPI\u7684\u5b9e\u73b0\u662fEntry\u3002\u542c\u8d77\u6765\u540d\u79f0\u6709\u70b9\u62d7\u53e3\u3002<\/p>\n<h4>\u521b\u5efa\u5b9e\u4f8b<\/h4>\n<p>\u65b0\u7684AbstractMap.SimpleEntry(key, value)<\/p>\n<h4>\u83b7\u53d6\u952e\u503c\u5bf9<\/h4>\n<p>Key \u901a\u8fc7\u4f7f\u7528 getKey() \u65b9\u6cd5\u83b7\u53d6\uff0c\u800c Value \u901a\u8fc7 getValue() \u65b9\u6cd5\u83b7\u5f97\u3002<\/p>\n<h4>\u6570\u503c\u7684\u6539\u53d8<\/h4>\n<p>\u53ea\u80fd\u4f7f\u7528 setValue \u65b9\u6cd5\u6765\u4fee\u6539 Value\u3002<\/p>\n<h4>\u6e96\u5099\u597d\u8003\u8a66<\/h4>\n<p>AbstractMap\u4e2d\u8fd8\u6709\u4e00\u4e2a\u540d\u4e3aSimpleImmutableEntry\u7684\u7c7b\u3002\u4f7f\u7528\u8fd9\u4e2a\u7c7b\uff0c\u6211\u4eec\u53ef\u4ee5\u5904\u7406\u65e0\u6cd5\u66f4\u6539\u7684\u5143\u7d20\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u5b9e\u8d28\u4e0a\u7981\u7528setValue\u65b9\u6cd5\u3002\u5f53\u8c03\u7528setValue\u65b9\u6cd5\u65f6\uff0c\u4f1a\u5f15\u53d1UnsupportedOperationException\u5f02\u5e38\u3002\u8fd9\u4e2a\u5b9e\u73b0\u5bf9\u60a8\u6765\u8bf4\u662f\u5426\u6709\u7528\u5462\uff1f<\/p>\n<p>\u5173\u4e8e\u540d\u5b57\u592a\u957f\u7684\u95ee\u9898\uff0c\u53ea\u8981\u6309\u7167\u4e0b\u9762\u7684\u65b9\u5f0f\u8fdb\u884c\u5904\u7406\uff0c\u5c31\u53ef\u4ee5\u89e3\u51b3\u3002<\/p>\n<pre class=\"post-pre\"><code> <span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">Pair<\/span><span class=\"o\">&lt;<\/span><span class=\"no\">K<\/span><span class=\"o\">,<\/span> <span class=\"no\">V<\/span><span class=\"o\">&gt;<\/span> <span class=\"kd\">extends<\/span> <span class=\"nc\">AbstractMap<\/span><span class=\"o\">.<\/span><span class=\"na\">SimpleEntry<\/span><span class=\"o\">&lt;<\/span><span class=\"no\">K<\/span><span class=\"o\">,<\/span> <span class=\"no\">V<\/span><span class=\"o\">&gt;<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"cm\">\/** serialVersionUID. *\/<\/span>\r\n    <span class=\"kd\">private<\/span> <span class=\"kd\">static<\/span> <span class=\"kd\">final<\/span> <span class=\"kt\">long<\/span> <span class=\"n\">serialVersionUID<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">6411527075103472113L<\/span><span class=\"o\">;<\/span>\r\n\r\n    <span class=\"kd\">public<\/span> <span class=\"nf\">Pair<\/span><span class=\"o\">(<\/span><span class=\"kd\">final<\/span> <span class=\"no\">K<\/span> <span class=\"n\">key<\/span><span class=\"o\">,<\/span> <span class=\"kd\">final<\/span> <span class=\"no\">V<\/span> <span class=\"n\">value<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"kd\">super<\/span><span class=\"o\">(<\/span><span class=\"n\">key<\/span><span class=\"o\">,<\/span> <span class=\"n\">value<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"o\">}<\/span>\r\n <span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<h4>\u6d4b\u8bd5\u4ee3\u7801<\/h4>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u5bf9\u5076 (AbstractMap.SimpleEntry)<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\u4e0d\u53ef\u53d8\u5bf9\u5076 (AbstractMap.SimpleImmutableEntry)<\/ol>\n<h3>javafx.util.Pair \u7684\u4e2d\u6587\u7ffb\u8bd1\u4e3a javafx.util.\u5bf9\u3002<\/h3>\n<p>\u8fd9\u662fJavaFX 2.0\u53ca\u66f4\u9ad8\u7248\u672c\u4e2d\u5305\u542b\u7684Pair\u7c7b\u7684\u5b9e\u73b0\u3002\u5b83\u51e0\u4e4e\u53ef\u4ee5\u50cf\u4e0a\u8ff0\u7684SimpleEntry\u7c7b\u4e00\u6837\u4f7f\u7528\u3002\u4f46\u662f\u5b83\u4e0d\u80fd\u4ea4\u6362\u503c\u3002<\/p>\n<h4>\u6d4b\u8bd5\u4ee3\u7801<\/h4>\n<p>\u6210\u5bf9<\/p>\n<h3>\u914d\u5bf9\uff08Eclipse Collections\uff09<\/h3>\n<p>Eclipse Collections\u662f\u53bb\u5e74\u7684\u5723\u8bde\u793c\u7269\u3002\u5f53\u4f60\u60f3\u8981\u5728Key\u548cValue\u4e2d\u4f7f\u7528\u4e0d\u540c\u7684\u7c7b\u578b\u65f6\uff0c\u8bf7\u4f7f\u7528\u6b64\u65b9\u6cd5\u3002\u901a\u8fc7swap\u65b9\u6cd5\u53ef\u4ee5\u6709\u8da3\u5730\u4ea4\u6362Key\u548cValue\u3002<\/p>\n<h4>\u521b\u5efa\u5b9e\u4f8b<\/h4>\n<p>Tuples.pair(key, value) \u53ef\u4ee5\u7528\u4e2d\u6587\u7ffb\u8bd1\u4e3a\u300c\u5143\u7ec4.\u6210\u5bf9(\u952e\uff0c\u503c)\u300d\u3002<\/p>\n<h4>\u83b7\u53d6\u952e\u503c\u5bf9\u7684\u503c<\/h4>\n<p>Key \u662f\u901a\u8fc7 getOne() \u83b7\u53d6\u7684\uff0c\u800c Value \u5219\u662f\u901a\u8fc7 getTwo() \u83b7\u53d6\u7684\u3002<\/p>\n<h4>\u4fee\u6539\u503c<\/h4>\n<p>\u6ca1\u6709\u8be5\u65b9\u6cd5\u5b58\u5728\u3002\u8c03\u7528\u9519\u8bef\u4e0d\u4f1a\u5f15\u53d1\u5f02\u5e38\u3002<\/p>\n<p>\u53e6\u5916\uff0c\u5b58\u5728\u7740\u4e00\u4e2a\u540d\u4e3aput\u7684\u65b9\u6cd5\u3002\u5b83\u4e0d\u662f\u7528\u4e8e\u8bbe\u7f6ePair\u7684\u503c\uff0c\u800c\u662f\u5c06Pair\u6240\u62e5\u6709\u7684\u952e(Key)\u548c\u503c(Value)\u653e\u5165\u4f20\u9012\u7684Map\u53c2\u6570\u4e2d\u7684\u65b9\u6cd5\u3002\u5982\u679c\u4f20\u9012\u7684Map\u662f\u4e0d\u53ef\u4fee\u6539\u7684\uff08unmodifiable\uff09\uff0c\u5c06\u4f1a\u5f15\u53d1\u5f02\u5e38\u3002<\/p>\n<h4>\u53e6\u5916<\/h4>\n<p>\u53ef\u4ee5\u4f7f\u7528swap\u65b9\u6cd5\u83b7\u53d6\u901a\u8fc7\u4ea4\u6362\u952e\u548c\u503c\u540e\u7684Pair\u3002<\/p>\n<h4>\u6d4b\u8bd5\u4ee3\u7801<\/h4>\n<p>\u914d\u5bf9\uff08Eclipse Collections\uff09<\/p>\n<h3>\u53cc\u80de\u80ce\uff08Eclipse\u96c6\u5408\uff09<\/h3>\n<p>\u5982\u679c\u952e\u548c\u503c\u5177\u6709\u76f8\u540c\u7684\u7c7b\u578b\uff0c\u5219\u4f7f\u7528\u6b64\u9009\u9879\u3002<\/p>\n<h4>\u521b\u5efa\u5b9e\u4f8b<\/h4>\n<p>\u5143\u7ec4.\u53cc(key, value)<\/p>\n<h4>\u83b7\u53d6\u952e\u503c\u5bf9<\/h4>\n<p>\u952e\u662f\u901a\u8fc7getOne()\u83b7\u53d6\u7684\uff0c\u503c\u662f\u901a\u8fc7getTwo()\u83b7\u53d6\u7684\u3002<\/p>\n<h4>\u6539\u52a8\u503c<\/h4>\n<p>\u6ca1\u6709\uff0c\u5b9e\u9645\u4e0a\u6839\u672c\u4e0d\u5b58\u5728\u8be5\u65b9\u6cd5\u3002\u8c03\u7528\u9519\u8bef\u4e5f\u4e0d\u4f1a\u5bfc\u81f4\u51fa\u73b0\u5f02\u5e38\u3002<\/p>\n<p>\u6ce8\u610f\uff0c\u5c3d\u7ba1\u5b58\u5728put\u65b9\u6cd5\uff0c\u4f46\u8be5\u65b9\u6cd5\u5e76\u4e0d\u662f\u4e3aTwin\u8bbe\u7f6e\u503c\uff0c\u800c\u662f\u5c06Twin\u7684\u952e\u548c\u503c\u653e\u5165\u4f20\u9012\u7684Map\u53c2\u6570\u4e2d\u7684\u65b9\u6cd5\u3002\u5982\u679c\u4f20\u9012\u7684Map\u662f\u4e0d\u53ef\u4fee\u6539\u7684\uff0c\u5219\u4f1a\u5f15\u53d1\u5f02\u5e38\u3002<\/p>\n<h4>\u9664\u6b64\u4e4b\u5916<\/h4>\n<p>\u60a8\u53ef\u4ee5\u4f7f\u7528swap\u65b9\u6cd5\u83b7\u53d6\u5c06\u952e(key)\u548c\u503c(value)\u4ea4\u6362\u7684Twin\u3002<\/p>\n<h4>\u6d4b\u8bd5\u4ee3\u7801<\/h4>\n<p>\u53cc\u80de\u80ce<\/p>\n<h3>org.apache.commons.lang3.tuple.Pair \u7ffb\u8bd1\u4e3a\u4e2d\u6587\u4e3a\uff1a\u7ec4\u7ec7.apache.commons.lang3.tuple.Pair<\/h3>\n<p>Apache Commons Collections \u63d0\u4f9b\u4e86\u8fd9\u4e9b\u529f\u80fd\u3002\u53ef\u4ee5\u4f7f\u7528\u5de5\u5382\u65b9\u6cd5\u521b\u5efa\u5b9e\u4f8b\uff0c\u53ef\u4ee5\u9009\u62e9\u53ef\u53d8\u6216\u4e0d\u53ef\u53d8\u5bf9\u8c61\uff0c\u8fd8\u53ef\u4ee5\u9009\u62e9\u4e0d\u540c\u7684\u503c\u63d0\u53d6\u65b9\u5f0f\uff0c\u975e\u5e38\u7ec6\u81f4\u5730\u8bbe\u8ba1\u4e86\u8fd9\u4e9b\u7279\u6027\u3002<\/p>\n<h4>\u521b\u5efa\u5b9e\u4f8b<\/h4>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u516c\u5bf9\u5305\u542b\u952e\u503c\u5bf9\u7684\u4e00\u5bf9\u5bf9\u8c61\u8fdb\u884c\u914d\u5bf9<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\u53ef\u53d8\u516c\u5bf9\u5305\u542b\u952e\u503c\u5bf9\u7684\u4e00\u5bf9\u5bf9\u8c61\u8fdb\u884c\u914d\u5bf9<\/ol>\n<h4>\u83b7\u53d6\u952e\u503c\u5bf9\u7684\u503c<\/h4>\n<p>\u952e\u53ef\u4ee5\u662fgetKey()\u6216\u8005getLeft()\uff0c\u503c\u53ef\u4ee5\u662fgetValue()\u6216\u8005getRight()\uff0c\u90fd\u53ef\u4ee5\u3002<\/p>\n<h4>\u6570\u503c\u7684\u66f4\u6539<\/h4>\n<p>MutablePair\u53ef\u4ee5\u901a\u8fc7setValue()\u65b9\u6cd5\u4ec5\u4fee\u6539\u503c\u3002<\/p>\n<p>\u65e0\u6cd5\u66f4\u6539\u7684Pair\u6216ImmutablePair\uff0c\u5f53\u8c03\u7528setValue()\u65b9\u6cd5\u65f6\u4f1a\u5f15\u53d1UnsupportedOperationException\u5f02\u5e38\u3002<\/p>\n<h4>\u8003\u8bd5\u4ee3\u7801<\/h4>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u4e0d\u53ef\u53d8\u7684\u914d\u5bf9<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\u53ef\u53d8\u7684\u914d\u5bf9<\/ol>\n<h3>\u6bd4\u8f83\u8868\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u8fdb\u884c\u6982\u62ec\u3002<\/h3>\n<div>\n<div class=\"post-table\">\u5b9f\u88c5\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u4f5c\u6210\u5909\u66f4\u5024\u306e\u53d6\u308a\u51fa\u3057AbstractMap.SimpleEntrynew\u25cbgetValueAbstractMap.SimpleImmutableEntrynew\u00d7getValuejavafx.util.Pairnew\u00d7getValueEclipse Collections PairTuples.pair\u00d7getTwoEclipse Collections TwinTuples.twin\u00d7getTwoApache Commons Collections MutablePairof\u25cbgetValue\/getRightApache Commons Collections ImmutablePairof\u00d7getValue\/getRight<\/div>\n<\/div>\n<h3>\u603b\u7ed3<\/h3>\n<p>\u5982\u679c\u6ca1\u6709\u4f7f\u7528\u5f00\u6e90\u8f6f\u4ef6\u7684\u7533\u8bf7\u7a0b\u5e8f\u7e41\u7410\u7b49\u7406\u7531\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528Eclipse Collections \u6216\u8005 Apache Collections\u3002<\/p>\n<h3>\u94fe\u63a5<\/h3>\n<p>GitHub\u4ee3\u7801\u5e93(pair_verification)\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u80cc\u666f &#8211; (background) \u5982\u679c\u60a8\u53ea\u9700\u8981Key\u548cValue\u7684\u6570\u636e\uff0c\u60a8\u4f1a\u7528\u4ec0\u4e48\u6765\u5b9e\u73b0\u5b83\u5462\uff1f\u5728 [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-31720","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u8003\u8651Java\u4e2d\u7684Pair\u7c7b - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u8003\u8651java\u4e2d\u7684pair\u7c7b\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u8003\u8651Java\u4e2d\u7684Pair\u7c7b\" \/>\n<meta property=\"og:description\" content=\"\u80cc\u666f &#8211; (background) \u5982\u679c\u60a8\u53ea\u9700\u8981Key\u548cValue\u7684\u6570\u636e\uff0c\u60a8\u4f1a\u7528\u4ec0\u4e48\u6765\u5b9e\u73b0\u5b83\u5462\uff1f\u5728 [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u8003\u8651java\u4e2d\u7684pair\u7c7b\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-04-04T22:54:39+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-30T07:43:07+00:00\" \/>\n<meta name=\"author\" content=\"\u65b0, \u97f5\" \/>\n<meta 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