개체 비교

//package Comparator;
import java.util.*;
import java.io.*;
class Student implements Comparator
{
	int age;
	String name;
	Student()
	{
	}
	Student(int age,String name)
	{
		this.age=age;
		this.name=name;
	}
	public int compare(Object o1,Object o2)//    ?vs? this vs o
	{
		return 0; 
	}
	public String toString()
	{
		return "  :"+name+"  :"+age+"
";
	}
	public Comparator getComparator1()
	{
		return new Comparator()
		{
          
		     public int compare(Object o1,Object o2)
			   {
   					Student oo1=(Student)o1;
					Student oo2=(Student)o2;
					if(oo1.age>oo2.age)return 1;
					else if(oo1.age<oo2.age)return -1;
					else
				   {
						if(oo1.name.compareTo(oo2.name)>0)return 1;
						else if(oo1.name.compareTo(oo2.name)<0)return -1;
						else return 0;
				   }
			   };
	   
	     };
	  
		
	}
	public Comparator getComparator2()
	{
		return new Comparator()
		{
		     public int compare(Object o1,Object o2)
				{
				    Student oo1=(Student)o1;
					Student oo2=(Student)o2;
					if(oo1.name.compareTo(oo2.name)>0)return 1;
					else if(oo1.name.compareTo(oo2.name)<0)return -1;
					else return 0;
				};
	   
	     };
	   
	}
};
class ArraysTest1 
{
	public static void main(String[] args) throws Exception
	{
		Student s=new Student();
		Student [] b={new Student(18,"zhang san"),new Student(16,"yan zi"),new Student(22,"zhang fei"),
				      new Student(22,"xiao yan"),new Student(18,"Zhang san"),new Student(16,"fei zi ")};
		 BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
					System.out.println("       (1:   2：  ))");
					String a=br.readLine();
		if(a.equals("1"))//     
		{
	   Arrays.sort(b,s.getComparator1());  
	    System.out.println(Arrays.toString(b));
	    }
	else if(a.equals("2"))//     
		{
		 Arrays.sort(b,s.getComparator2());
		  System.out.println(Arrays.toString(b));
		}
	}
}