{"id":2548,"date":"2022-11-22T02:37:40","date_gmt":"2022-11-21T18:37:40","guid":{"rendered":"http:\/\/tihar-tech.cn\/?p=2548"},"modified":"2023-06-06T17:24:09","modified_gmt":"2023-06-06T09:24:09","slug":"%e8%87%aa%e5%ae%9a%e4%b9%89%e6%8e%92%e5%ba%8f%e8%a7%84%e5%88%99-comparable%e5%92%8ccomparator%e6%8e%a5%e5%8f%a3%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"http:\/\/139.196.114.170\/?p=2548","title":{"rendered":"\u81ea\u5b9a\u4e49\u6392\u5e8f\u89c4\u5219 – Comparable\u548cComparator\u63a5\u53e3\u8be6\u89e3"},"content":{"rendered":"

Comparable\u63a5\u53e3\u4e0e\u4f7f\u7528<\/h3>\n

\u63a5\u53e3\u5b9a\u4e49<\/h4>\n
\npublic interface Comparable  {\n    public int compareTo(T o);\n}\n<\/pre>\n
<T>\u9650\u5b9a\u53c2\u4e0e\u6bd4\u8f83\u7684\u5bf9\u8c61\u7c7b\u578b\u53ea\u80fd\u4e3aT
\ncompareTo()\u65b9\u6cd5\u8fd4\u56de\u8c03\u7528\u65b9\u548c\u53c2\u6570\u65b9\u7684\u5927\u5c0f\u5173\u7cfb<\/p>\n
\n\u8c03\u7528\u5bf9\u8c61 > \u53c2\u6570\u5bf9\u8c61\uff0c\u8fd4\u56de\u503c > 0\n\u8c03\u7528\u5bf9\u8c61 = \u53c2\u6570\u5bf9\u8c61\uff0c\u8fd4\u56de\u503c = 0\n\u8c03\u7528\u5bf9\u8c61 < \u53c2\u6570\u5bf9\u8c61\uff0c\u8fd4\u56de\u503c < 0\n<\/pre>\n
\u6848\u4f8b\u5b9e\u73b0<\/h4>\n
public class Person implements Comparable<Person> {\n\n    private int age;\n    private String name;\n\n    public Person(int age, String name) {\n        this.age = age;\n        this.name = name;\n    }\n\n    @Override\n    public int compareTo(Person o) {\n        if (this.age != o.age) return Integer.compare(this.age, o.age);\n        return String.CASE_INSENSITIVE_ORDER.compare(this.name, o.name);\n    }\n\n    public static void main(String[] args) {\n        \/\/ test1\n        Person a1 = new Person(24, "Alan");\n        Person a2 = new Person(24, "Bob");\n        System.out.println(a1.compareTo(a2));\n        \/\/ test2\n        Person b1 = new Person(24, "Cindy");\n        Person b2 = new Person(20, "Dory");\n        System.out.println(b1.compareTo(b2));\n        \/\/ test3\n        Person c1 = new Person(30, "Era");\n        Person c2 = new Person(30, "Era");\n        System.out.println(c1.compareTo(c2));\n    }\n}<\/code><\/pre>\n
\u4f7f\u7528\u8981\u70b9<\/h4>\n
1\uff09\u591a\u4e2a\u5b57\u6bb5\u6392\u5e8f\u89c4\u5219\u65f6\u6d89\u53ca\u5b57\u6bb5\u4f18\u5148\u7ea7\uff0c\u5728\u7b2c\u4e00\u987a\u4f4d\u503c\u76f8\u540c\u65f6\u6309\u7167\u7b2c\u4e8c\u987a\u4f4d\u503c\u6392\u5e8f\uff0c\u4f9d\u6b64\u7c7b\u63a8<\/p>\n
2\uff09\u57fa\u672c\u7c7b\u578b\u6bd4\u8f83\u65f6\uff0c\u56e0\u6d89\u53ca\u6570\u636e\u8868\u793a\u7ec6\u8282\uff0c\u5efa\u8bae\u4f7f\u7528\u5305\u88c5\u7c7b\u578b\u7684\u9759\u6001\u6bd4\u8f83\u65b9\u6cd5<\/strong>\uff0c\u8be6\u89c1\u4e0b\u4f8b<\/p>\n