调用 java GC

package com.jim;

/**
 * Created by zj on 15/12/2.
 */
public class Demo {
    public void say(){
        System.gc();
        System.out.println("你索啊--------------------");
        Demo.this.say();
    }

    public static void main(String[] args) {
        Demo e= new Demo();
        e.say();
    }
}