一、基本概述
1、进入Java的世界
Java的工作方式
Java简史
Java的程序结构
剖析类
案例：数啤酒瓶
package com.jackson.java;
/**
*
* @版权 : Copyright (c) 2020-2021 Jacson个人学习代码
* @author: Jackson
* @E-mail: [email protected]
* @创建日期: 2020年3月12日 下午7:51:53
* @ClassName BeerSong
*/
public class BeerSong {
public static void main(String[] args) {
int beerNum = 99;
String word = "bottles";
while (beerNum > 0) {
if (beerNum == 1) {
word = "bottle";
}
System.out.println(beerNum + " " + word + " of beer on the wall");
System.out.println(beerNum + " " + word + " of beer.");
System.out.println("Take one down.");
System.out.println("Pass it around.");
beerNum = beerNum - 1;
if (beerNum > 0) {
System.out.println(beerNum + " " + word + " of beer on the wall");
} else {
System.out.println("No more bottles of beer of the wall.");
}//else结束
System.out.println();
}//while循环结束
}//main方法结束
}//class结束
输出结果如下：
案例：随机组合专家术语
package com.jackson.java;
/**
*
* @版权 : Copyright (c) 2020-2021 Jacson个人学习代码
* @author: Jackson
* @E-mail: [email protected]
* @创建日期: 2020年3月12日 下午8:52:26
* @ClassName PhraseOMatic
*/
public class PhraseOMatic {
public static void main(String[] args) {
String[] wordListOne = { "24/7", "multi-Tier", "30000 foot", "B-to-B", "web-based" };
String[] wordListTwo = { "empowered", "sticky", "value-added", "oriented", "focused", "share", "dynamic" };
String[] wordListThree = { "process", "tipping-point", "solution", "architecture", "mission" };
// 计算每一组有多少个名词术语
int oneLength = wordListOne.length;
int twoLength = wordListTwo.length;
int threeLength = wordListThree.length;
// 产生随机数字
int randOne = (int) (Math.random() * oneLength);
int randTwo = (int) (Math.random() * twoLength);
int randThree = (int) (Math.random() * threeLength);
// 组合出专家术语
String phrase = wordListOne[randOne] + " " + wordListTwo[randTwo] + " " + wordListThree[randThree];
System.out.println("What we need is :" + phrase);
}
}
//输出结果：What we need is :web-based empowered process