//物联网302-杨海洋-2020050808825 (825) //Father类 package KeTang; public class Father { private String name="zhangjun"; //创建内部类 class Child { void introFather() { //创建方法 name = "张三"; Systemoutprintln(name); } } } //测试类 package KeTang; public class TestFather { public static void main(String[] args) { //创建内部类对象 FatherChild child = new Father()new Child(); //调用Child内部类的introFather方法 childintroFather(); } }