yuangong.java

QQ界面设置

import java.sql.Date;
import java.util.ArrayList;
import java.util.Collections;

/*interface Comparable{
 *  int compareTo(Object e);
 *}
 **/
public class Test 
{
   public static void main(String[] args)
   {
      //设置一个员工数组，并循环输出他们的入职日期和薪水
	   ArrayList<Employee> staff=new ArrayList<Employee>();
      
      Employee e=new Employee();
      e.setName("李明");
      e.setHireDay("1985-5-10");
      e.setSalary(2000.0);
      staff.add(e);
      Employee e1=new Employee();
      e1.setName("王健");
      e1.setHireDay("1987-7-10");
      e1.setSalary(1800.0);
      staff.add(e1);
      Employee e2=new Employee();
      e2.setName("林强");
      e2.setHireDay("1987-9-10");
      e2.setSalary(2500.0);
      staff.add(e2);
      
      System.out.println("排序前的员工信息如下：");
      for(Employee temp:staff)
      {
      	System.out.println(temp.getName()+" "+temp.getHireDay()+"  "+temp.getSalary());
      }
    
      Collections.sort(staff);
      
      System.out.println();    
      System.out.println("排序后的员工信息如下：");
      for(Employee temp:staff)
      {
      	System.out.println(temp.getName()+" "+temp.getHireDay()+"  "+temp.getSalary());
      }
      
      
   }
}

class Employee implements Comparable
{  
	 private String name;
	 private double salary;
	 private Date hireDay;  
	 
   public String toString()
   {
      return name+" "+salary;
   }
   public String getName()
   {
      return name;
   }

   public double getSalary()
   {
      return salary;
   }

   public Date getHireDay()
   {
      return hireDay;
   }
   
   public void setName(String name){
   	 this.name=name;
   }
   
   public void setSalary(Double salary) 
   { 
	   this.salary=salary; 
   }

   public void setHireDay(String hireDayString) 
   {
	   this.hireDay = Date.valueOf(hireDayString); 
   }
public int compareTo(Object o)
{
	// TODO Auto-generated method stub
	Employee e=(Employee)o;
	int a=(int)(salary-e.salary);
	return a;
}
   

}
// 经理比雇员多一个属性奖金bonus 实现经理类Manager

class Manager extends Employee
{
	private double bonus;
   
   public double getSalary()
   {
      
      return super.getSalary() + bonus;
   }

   public void setBonus(double b)
   {
      bonus = b;
   }  
}