- Java code
import javax.swing.*;import java.util.*;import java.math.*;import java.util.Date;public class CloneTest extends Object{ public static void main(String[] args) { }}class Employee implements Comparable<Employee> //在Eclipse中,除了 return 0 那行没提示错误,其他都有错{ int compareTo(Employee) { return 0; }}
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- Java code
int compareTo(Employee) { return 0; }
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访问权限只能升不能降
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- Java code
class Employee implements Comparable<Employee> //在Eclipse中,除了 return 0 那行没提示错误,其他都有错 { public int compareTo(Employee e) //1. 此为继承方法,必须为public,2.参数必须有一个名字 { return 0; } }