静态内部类

package com.lagou.task10;

/**
 * 实现静态内部类的定义和使用
 */
public class StaticOuter {
    private static int cnt = 1;
    private int snt = 2;

    /**
     * 定义静态内部类  有static关键字修饰隶属于类层级
     */
    public static class StaticInner {
        private int ia = 3;
        public StaticInner(){
            System.out.println("静态内部类的构造方法啊！");
        }
        public void show(){
            System.out.println("ia = " + ia);
            System.out.println("cnt = " + cnt);
            StaticOuter so = new StaticOuter();
            System.out.println("snt = " + so.snt);
        }
    }
}

package com.lagou.task10;

public class StaticOuterTest {
    public static void main(String[] args) {
        StaticOuter.StaticInner si = new StaticOuter.StaticInner();
        si.show();
    }
}