Java冒泡排序对比xyz大小

import java.util.Scanner;
public class XB_2_10_maopao {
	public static void main(String[] args) {
		Scanner input=new Scanner(System.in);
		int[] arr = new int[3];
		//定义3个数组        
      System.out.print("请输入x的值");        
      arr[0] = input.nextInt();        
      System.out.print("请输入y的值");        
      arr[1] = input.nextInt();        
      System.out.print("请输入z的值");        
      arr[2] = input.nextInt();        
      for (int i = 0;i<arr.length;i++){            
    	  for (int a=0;a<arr.length;a++){                
    		  if (arr[i]<arr[a]){                    
    			  int arr1[]={0};                    
    			  arr1[0]=arr[i];                    
    			  arr[i]=arr[a];                    
    			  arr[a]=arr1[0];                
    			  }            
    		  }        
    	  }        
      for (int i=0;i<arr.length;i++){            
    	  System.out.print(arr[i]);        
    	  }    
      }
	}