ex050108.java

我在学习JAVA的讲义

class Xxx{
	private int i;
	Xxx x;
	public Xxx(){
		i = 10;
		x = null;
	}
	
	public Xxx(int i){
		this.i = i;
		x=new Xxx();
	}
	
	public void print(){
		System.out.println("i="+i);
		System.out.println(x);
	}
	public String toString(){
		return "i="+i;
	}
	
}

class Test{
	public static void main(String[] args){
		Xxx x=new Xxx(100);
		x.print();
		System.out.println(x.x);
	}
}