局部变量的作用!

class Variable
{
int x=0,y=0,z=0;
void init(int x,int y)
{
this.x=x;
this.y=y;
int z=5;
System.out.print("* * * in init * * *");
System.out.print("x="+x+"y="+y+"z="+z);
}
}
public class TestVariable
{
public static void main(String[]args)
{
Variable v=new Variable();
System.out.print("* * * before init * * *");
System.out.print("x="+v.x+"y="+v.y+"z="+v.z);
v.init(20,30);
System.out.print("* * * after init * * *");
System.out.print("x="+v.x+"y="+v.y+"z="+v.z);
}
}


以后有用得着的,直接在这里调用啊!谢谢啊!