qq_45924838的博客

AMoney Coin.java package Coins; import java.util.HashMap; import java.util.Scanner; public class Coin { private HashMap<Integer, String> coinnames = new HashMap<Integer, String>(); public Coin() { coinnames.put(1, "penny"); coinnames.

CarGameProj

HelloProj1 HelloWorld.java package com.study.hello; public class HelloWorld1 { public static void main(String[] args) { // TODO Auto-generated method stub System.out.println("Hello, Java World!\n"+ "tql" ); //换行输出+字符串连接‘+’ } } HelloProj