private int id;private String name;private double salary;public int getId() {return id;}public void setId(int id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public double getSalary() {return salary;}public void setSalary(double salary) {this.salary = salary;}@Overridepublic String toString() {return "员工编号：" + id + "，员工姓名：" + name + "，员工工资：" + salary;}
}

package com.mingrisoft.beanutils;import java.util.ArrayList;
import java.util.Collections;
import java.util.List;import org.apache.commons.beanutils.BeanComparator;public class Test {@SuppressWarnings("unchecked")public static void main(String[] args) {Employee employee1 = new Employee();// 创建employee1对象并初始化employee1.setId(1);employee1.setName("IBM");employee1.setSalary(10000);Employee employee2 = new Employee();// 创建employee2对象并初始化employee2.setId(2);employee2.setName("Oracle");employee2.setSalary(1000);Employee employee3 = new Employee();// 创建employee3对象并初始化employee3.setId(3);employee3.setName("Sun");employee3.setSalary(100);List<Employee> list = new ArrayList<Employee>();// 创建list对象并保存全部员工对象
        list.add(employee1);list.add(employee2);list.add(employee3);System.out.println("排序前：");for (Employee employee : list) {System.out.println(employee);// 输出所有对象
        }Collections.<Employee> sort(list, new BeanComparator("salary"));// 进行排序System.out.println("按工资排序后：");for (Employee employee : list) {System.out.println(employee);// 输出所有对象
        }}
}