wp456

摘要： package frank;import java.lang.*;public class App{ public static void main(String[] args) { Test1 t1 = new Test1(); Test1.Test2 t2; t2 = t1.new Test2(); t2.get(); Test1.Test3 t3 = new Test1.Test3(); }}class Test1{ private int age = 0; public Test1() { System.out.println("外部类"); } public cl 阅读全文