Arrays.sort()方法可对任何实现compareble接口的对象数组排序。
源代码
EmployeeSortTest.java
import java.util.*;/*** This program demonstrates the use of the Comparable interface.* @version 1.30 -02-27* @author Cay Horstmann*/public class EmployeeSortTest{public static void main(String[] args){Employee[] staff = new Employee[3];staff[0] = new Employee("Harry Hacker", 35000);staff[1] = new Employee("Carl Cracker", 75000);staff[2] = new Employee("Tony Tester", 38000);Arrays.sort(staff);// print out information about all Employee objectsfor (Employee e : staff)System.out.println("name=" + e.getName() + ",salary=" + e.getSalary());}}
Employee.java
public class Employee implements Comparable<Employee>{private String name;private double salary;public Employee(String name, double salary){this.name = name;this.salary = salary;}public String getName(){return name;}public double getSalary(){return salary;}public void raiseSalary(double byPercent){double raise = salary * byPercent / 100;salary += raise;}/*** Compares employees by salary* @param other another Employee object* @return a negative value if this employee has a lower salary than* otherObject, 0 if the salaries are the same, a positive value otherwise*/public int compareTo(Employee other){return pare(salary, other.salary);}}
参考文章
/zouzong123/article/details/81071086
