写了一个java数组排序示例，这里分享给大家共同学习

package com.yonyou.test;import java.util.ArrayList;import java.util.Collections;import java.util.Comparator;import java.util.List;public class Test { public static void main(String[] args) {  Student zlj = new Student("丁晓宇", 21);  Student dxy = new Student("赵四", 22);  Student cjc = new Student("张三", 11);  Student lgc = new Student("刘武", 19);  List<Student> studentList = new ArrayList<Student>();  studentList.add(zlj);  studentList.add(dxy);  studentList.add(cjc);  studentList.add(lgc);  System.out.println("按照年齡排序：");  Collections.sort(studentList, new SortByAge());  for (Student student : studentList) {   System.out.println(student.getName() + " / " + student.getAge());  }  System.out.println(" ========= ");  System.out.println("按照姓名排序");  Collections.sort(studentList, new SortByName());  for (Student student : studentList) {   System.out.println(student.getName() + " / " + student.getAge());  } }}class SortByAge implements Comparator { public int compare(Object o1, Object o2) {  Student s1 = (Student) o1;  Student s2 = (Student) o2;  if (s1.getAge() > s2.getAge())   return 1;  else if (s1.getAge() == s2.getAge()) {   return 0;  }  return -1; }}class SortByName implements Comparator { public int compare(Object o1, Object o2) {  Student s1 = (Student) o1;  Student s2 = (Student) o2;  if(s1.getName().compareTo(s2.getName()) < 0)   return -1;  else if (s1.getName().compareTo(s2.getName()) > 0) {   return 1;  }  return 0; }}class Student{ private int age; private String name; public int getAge() {  return age; } public void setAge(int age) {  this.age = age; } public String getName() {  return name; } public void setName(String name) {  this.name = name; } public Student(String name,int age) {  this.age = age;  this.name = name; }}

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