02 2020 档案
摘要：静态方法和静态属性属于类本身，无法被子类重写 class A{ private int i = 1; private void f(){ } public static int j=3; public static void o() { System.out.println("aaaaaaaaaaa
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摘要：对象排序或比较的场合均需要Comparable接口 public class User implements Comparable<User>{ private String name; private int phone; public String getName() { return name
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