vartest.java

java学习理解的素材 可以更好的理解java运行过程

import java.io.*;
class Var
{
 int x=0,y=0,z=0; //quanjubianliang
 void init(int x,int y)
  {
	this.x=x;this.y=y;
	int z=5;  //jububianliang
	System.out.println("** in init**");
	System.out.println("x="+x+" y="+y+" z="+z);
	
  }
}
public class VarTest
{
	public static void main (String args[])
	{
		Var v=new Var();
		System.out.println("**before init**");
		System.out.println("x="+v.x+" y="+v.y+" z="+v.z);
		v.init(20,30);
		System.out.println("**after init**");
		System.out.println("x="+v.x+" y= "+v.y+" z="+v.z);
	}
}