java数组去掉重复值

import java.util.ArrayList; 

public class Try { 

/** 
* @param args 
*/ 
    public static void main(String[] args) { 
String test="100,120,166,1555,120,150,100"; 
         String[] test1=test.split(","); 
         ArrayList list=new ArrayList(); 
for(int i=0;i<test1.length;i++)   
  { 
             if(!list.contains(test1[i])) 
       list.add(test1[i]);       
            }  

         System.out.println("hehe"+list.size()+"haha");  
         for(int i=0;i<list.size();i++) 
         System.out.println("hehe"+list.get(i));  

} 
}