import java.util.*; class test extends Date{ public static void main(String[] args) { new test().tt(); } public void tt(){ System.out.println(super.getClass().getName()); } } class Base { void test(){ System.out.println("base test()"); } } class child extends Base{ void test(){ System.out.println("child test()"); } } public class HelloWorld { public static void main(String[] args) { System.out.println("http://www.anycodes.cn/zh/"); System.out.println("1..................."); new test().tt(); System.out.println("2..................."); int x=12; System.out.println("x+=x-=x*=x >>>"); System.out.println(x+=x-=x*=x); System.out.println("3..................."); child anobj =new child(); Base baseobj = (Base)anobj; baseobj.test(); System.out.println("4..................."); int i,j; outer:for(i=1;i<3;i++) inner:for(j=1;j<3;j++){ if(j==2)continue outer; System.out.println("i= "+i+" j= "+j); } System.out.println("5..................."); Thread t=new Thread(){ public void run(){ pong(); } }; t.run(); System.out.print("ping"); } static void pong(){ System.out.print("pong"); } } /* 運行輸出 http://www.anycodes.cn/zh/ 1................... test 2................... x+=x-=x*=x >>> -120 3................... child test() 4................... i= 1 j= 1 i= 2 j= 1 5................... pongping */