{"id":203004,"date":"2025-05-22T11:07:50","date_gmt":"2025-05-22T03:07:50","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203004\/"},"modified":"2025-05-22T11:07:50","modified_gmt":"2025-05-22T03:07:50","slug":"java%e4%b8%ad%e5%a6%82%e4%bd%95%e9%80%9a%e8%bf%87%e6%96%b9%e6%b3%95%e5%bc%95%e7%94%a8%e5%ae%9a%e4%b9%89%e5%87%bd%e6%95%b0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203004\/","title":{"rendered":"Java\u4e2d\u5982\u4f55\u901a\u8fc7\u65b9\u6cd5\u5f15\u7528\u5b9a\u4e49\u51fd\u6570"},"content":{"rendered":"

<\/b> <\/p>\n

Java\u4e2d\u5982\u4f55\u901a\u8fc7\u65b9\u6cd5\u5f15\u7528\u5b9a\u4e49\u51fd\u6570<\/h1>\n

IT\u884c\u4e1a\u76f8\u5bf9\u4e8e\u4e00\u822c\u4f20\u7edf\u884c\u4e1a\uff0c\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u66f4\u5feb\uff0c\u4e00\u65e6\u505c\u6b62\u4e86\u5b66\u4e60\uff0c\u5f88\u5feb\u5c31\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u6240\u4ee5\u6211\u4eec\u9700\u8981\u8e0f\u8e0f\u5b9e\u5b9e\u7684\u4e0d\u65ad\u5b66\u4e60\uff0c\u7cbe\u8fdb\u81ea\u5df1\u7684\u6280\u672f\uff0c\u5c24\u5176\u662f\u521d\u5b66\u8005\u3002\u4eca\u5929\u7ed9\u5927\u5bb6\u6574\u7406\u4e86\u300aJava\u4e2d\u5982\u4f55\u901a\u8fc7\u65b9\u6cd5\u5f15\u7528\u5b9a\u4e49\u51fd\u6570\u300b\uff0c\u804a\u804a\uff0c\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n

\u5728 Java \u4e2d\uff0c\u4f7f\u7528\u65b9\u6cd5\u5f15\u7528\u5b9a\u4e49\u51fd\u6570\u7684\u65b9\u6cd5\u5f15\u7528\u662f\u5f15\u7528\u7c7b\u7684\u65b9\u6cd5\uff0c\u4ee5\u7b80\u6d01\u8bed\u6cd5\u5b9e\u73b0\u76f8\u540c\u529f\u80fd\u3002\u6709\u4ee5\u4e0b\u6b65\u9aa4\uff1a\u6307\u5b9a\u7c7b\u578b\uff0c\u5373\u5305\u542b\u65b9\u6cd5\u7684\u7c7b\u6216\u63a5\u53e3\u3002\u6307\u5b9a\u65b9\u6cd5\u540d\u79f0\u3002\u4f18\u70b9\u5305\u62ec\uff1a\u4ee3\u7801\u7b80\u6d01\u3002\u7c7b\u578b\u5b89\u5168\u3002\u6027\u80fd\u4f18\u826f\u3002<\/p>\n

<\/p>\n

\u5728 Java \u4e2d\u4f7f\u7528\u65b9\u6cd5\u5f15\u7528\u5b9a\u4e49\u51fd\u6570<\/strong><\/p>\n

\u65b9\u6cd5\u5f15\u7528\u662f\u4e00\u79cd\u7279\u6b8a\u7c7b\u578b\u7684 lambda \u8868\u8fbe\u5f0f\uff0c\u5b83\u5f15\u7528\u7c7b\u7684\u65b9\u6cd5\uff0c\u4ee5\u4fbf\u4f7f\u7528\u66f4\u7b80\u6d01\u7684\u8bed\u6cd5\u6765\u5b9e\u73b0\u76f8\u540c\u7684\u529f\u80fd\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n

\u7c7b\u578b::\u65b9\u6cd5\u540d\u79f0<\/pre>\n
\u5176\u4e2d\uff1a<\/p>\n
    \n
  • \u7c7b\u578b<\/strong>\uff1a\u5305\u542b\u65b9\u6cd5\u7684\u7c7b\u6216\u63a5\u53e3\u7684\u540d\u79f0<\/li>\n
  • \u65b9\u6cd5\u540d\u79f0<\/strong>\uff1a\u8981\u5f15\u7528\u7684\u65b9\u6cd5\u7684\u540d\u79f0<\/li>\n<\/ul>\n
    \u5b9e\u6218\u6848\u4f8b\uff1a\u6bd4\u8f83\u5668<\/strong><\/p>\n
    \u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a Student<\/code> \u7c7b\uff0c\u5176\u4e2d\u5305\u542b name<\/code> \u548c age<\/code> \u4e24\u4e2a\u5c5e\u6027\u3002\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2a Comparator<\/code>\uff0c\u6839\u636e\u5b66\u751f\u7684\u59d3\u540d\u5bf9\u5176\u8fdb\u884c\u6392\u5e8f\u3002<\/p>\n
    \u4f20\u7edf\u65b9\u5f0f\uff1a<\/p>\n
    Comparator<Student> byName = new Comparator<Student>() {\n    @Override\n    public int compare(Student o1, Student o2) {\n        return o1.getName().compareTo(o2.getName());\n    }\n};<\/pre>\n
    \u4f7f\u7528\u65b9\u6cd5\u5f15\u7528\uff1a<\/p>\n
    Comparator<Student> byName = Student::getName;<\/pre>\n
    \u65b9\u6cd5\u5f15\u7528 Student::getName<\/code> \u7b49\u6548\u4e8e\u4e0a\u9762\u7684\u533f\u540d\u5185\u90e8\u7c7b\u4e2d\u7684 compare<\/code> \u65b9\u6cd5\u3002<\/p>\n
    \u5b9e\u6218\u6848\u4f8b\uff1a\u4e8b\u4ef6\u76d1\u542c\u5668<\/strong><\/p>\n
    \u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u6309\u94ae\uff0c\u5f53\u70b9\u51fb\u65f6\uff0c\u6211\u4eec\u9700\u8981\u663e\u793a\u4e00\u6761\u6d88\u606f\u3002<\/p>\n
    \u4f20\u7edf\u65b9\u5f0f\uff1a<\/p>\n
    class ButtonListener implements ActionListener {\n    @Override\n    public void actionPerformed(ActionEvent e) {\n        JOptionPane.showMessageDialog(null, \"\u4f60\u70b9\u51fb\u4e86\u6309\u94ae\uff01\");\n    }\n}\n\nJButton button = new JButton(\"\u70b9\u51fb\u6211\");\nbutton.addActionListener(new ButtonListener());<\/pre>\n
    \u4f7f\u7528\u65b9\u6cd5\u5f15\u7528\uff1a<\/p>\n
    JButton button = new JButton(\"\u70b9\u51fb\u6211\");\nbutton.addActionListener(e -> JOptionPane.showMessageDialog(null, \"\u4f60\u70b9\u51fb\u4e86\u6309\u94ae\uff01\"));\n\n\/\/ \u6216\u8005\uff0c\u4f7f\u7528\u65b9\u6cd5\u5f15\u7528\uff1a\nbutton.addActionListener(JOptionPane::showMessageDialog);<\/pre>\n
    \u4f18\u70b9\uff1a<\/strong><\/p>\n
    \u4f7f\u7528\u65b9\u6cd5\u5f15\u7528\u7684\u597d\u5904\u5305\u62ec\uff1a<\/p>\n
      \n
    • \u4ee3\u7801\u7b80\u6d01\uff1a<\/strong>\u65b9\u6cd5\u5f15\u7528\u53ef\u4ee5\u663e\u8457\u51cf\u5c11\u533f\u540d\u5185\u90e8\u7c7b\u7684\u4f7f\u7528\uff0c\u4ece\u800c\u4f7f\u4ee3\u7801\u66f4\u7b80\u6d01\u6613\u8bfb\u3002<\/li>\n
    • \u7c7b\u578b\u5b89\u5168\uff1a<\/strong>\u65b9\u6cd5\u5f15\u7528\u901a\u8fc7\u7f16\u8bd1\u5668\u5f3a\u5236\u6267\u884c\u7c7b\u578b\u68c0\u67e5\uff0c\u786e\u4fdd\u53ea\u6709\u517c\u5bb9\u7684\u7c7b\u578b\u624d\u80fd\u88ab\u5f15\u7528\u3002<\/li>\n
    • \u6027\u80fd\uff1a<\/strong>\u65b9\u6cd5\u5f15\u7528\u901a\u5e38\u6bd4\u533f\u540d\u5185\u90e8\u7c7b\u5177\u6709\u66f4\u597d\u7684\u6027\u80fd\uff0c\u56e0\u4e3a\u5b83\u4eec\u53ef\u4ee5\u88ab JVM \u5185\u8054\u3002<\/li>\n<\/ul>\n
      \u4eca\u5929\u5173\u4e8e\u300aJava\u4e2d\u5982\u4f55\u901a\u8fc7\u65b9\u6cd5\u5f15\u7528\u5b9a\u4e49\u51fd\u6570\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8ejava,\u65b9\u6cd5\u5f15\u7528\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
      Java\u4e2d\u5982\u4f55\u901a\u8fc7\u65b9\u6cd5\u5f15\u7528\u5b9a\u4e49\u51fd...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-203004","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203004","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=203004"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203004\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203004"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203004"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203004"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}