這裏是按照薪水和名字進行排序的各個實現
很有參考價值!源碼如下...
package 別人的程序的分析設計;
/**
* @author greatwqs
*
*/
import java.util.Collections;
import java.util.*;
public class myQuiz{
public static void main(String[] args) {
Employee e1 = new Employee("Cay",4000);
Employee e2 = new Employee("Bush",6000);
Manager m1 = new Manager ("Alice",5000);
//m1.setBonus(100000);
List<Employee> list_1=new ArrayList<Employee>();
list_1.add(e1);
list_1.add(e2);
list_1.add(m1);
System.out.println("以下按薪水排序後輸出[從高到低]");
Collections.sort(list_1,new Qing());
for(Employee e:list_1)
System.out.println(e);
List<Employee> list_2 = new ArrayList<Employee>();
list_2.add(e1);
list_2.add(e2);
list_2.add(m1);
System.out.println("以下按照姓名字典順序輸出：");
Collections.sort(list_2 , new Song());
for(Employee em :list_2){
System.out.println(em);
}
}
}
class Qing implements Comparator{
public int compare(Object obj0, Object obj1){
Employee c0 = (Employee)obj0;
Employee c1 = (Employee)obj1;
if(c0.getSalary() >= c1.getSalary())
return -1;
else
return 1;
}
}
class Song implements Comparator{
public int compare(Object obj0, Object obj1){
Employee c0 = (Employee)obj0;
Employee c1 = (Employee)obj1;
return c0.getName().compareTo(c1.getName());
}
}
/******Employee and Manager *****/
class Employee
{
public Employee(String n, double s)
{
name = n;
salary = s;
}
public String getName()
{
return name;
}
public double getSalary()
{
return salary;
}
public void raiseSalary(double byPercent)
{
double raise = salary * byPercent / 100;
salary += raise;
}
public String toString(){
return("name: "+name+"salary: "+salary);
}
private String name;
private double salary;
}
//後面還有補充.....