由多个Object(以Teacher为例）对象所形成的数组可以使用Arrays.sort方法进行排序（编号由低到高排序）。

package com.testthree.third;

import java.util.Arrays;

public class Teacher implements Comparable<Object>{
 /**
  * @param args
  */
 private int no ;
 private String name;
 private int age;
 private String seminary;
 
 public Teacher(int no,String name,int age,String seminary) {
  this.no = no;
  this.name = name;
  this.age = age;
  this.seminary = seminary;
 }
 /**
  * @return the no
  */
 public int getNo() {
  return no;
 }

 /**
  * @param no the no to set
  */
 public void setNo(int no) {
  this.no = no;
 }

 /**
  * @return the name
  */
 public String getName() {
  return name;
 }

 /**
  * @param name the name to set
  */
 public void setName(String name) {
  this.name = name;
 }

 /**
  * @return the age
  */
 public int getAge() {
  return age;
 }

 /**
  * @param age the age to set
  */
 public void setAge(int age) {
  this.age = age;
 }

 /**
  * @return the seminary
  */
 public String getSeminary() {
  return seminary;
 }

 /**
  * @param seminary the seminary to set
  */
 public void setSeminary(String seminary) {
  this.seminary = seminary;
 }
 
 //實現Comparable接口中的比較方法compareTo
 @Override
 public int compareTo(Object o) {
  // TODO Auto-generated method stub 
  if(this.no < ((Teacher)o).no){
   return -1;
  }
  else if(this.no == ((Teacher)o).no)
   return 0;
  else
   return 1;
 }
 public String toString() {
  String Str = "编号为：" + no + "、姓名为：" + name + "、年龄为：" + age + "的"
    + seminary + "学院老师";
  return Str;
 }// toString
 public static void main(String[] args) {
  // TODO Auto-generated method stub
  Teacher [] teacherArray = new Teacher[3];
  teacherArray[0] = new Teacher(101,"misszhang",30,"xinxi");
  teacherArray[1] = new Teacher(102,"mrzhang",24,"xindian");
  teacherArray[2] = new Teacher(100,"mrli",40,"xinxi");
  
  System.out.println("输出排序前的teacherArrray数组中的元素：");
  for(int i=0 ; i<teacherArray.length ;i++)
  {
   System.out.println(teacherArray[i].toString());
  }
  Arrays.sort(teacherArray, 0, 3);
  System.out.println("输出排序后的teacherArrray数组中的元素：");
  for(int i=0 ; i<teacherArray.length ;i++)
  {
   System.out.println(teacherArray[i].toString());
  }
 
 }//main
}