public class PassingParam{ 
static class OneObject{
	  public String Y="a";
}
static void changeParam(int X,OneObject object1){  // XΪͣobject1Ϊ
	  X=9;
	  object1.Y="H";
}
    public static void main(String args[]){
       OneObject obj1=new OneObject();
    	   int a=10;
    	   System.out.println("Before:a="+a+" ,obj1.Y="+obj1.Y);
    	   changeParam(a,obj1);   //ãaΪֵobj1Ϊ
    	   System.out.println("After:  a="+a+" ,obj1.Y="+obj1.Y);
    }
}