时隔近5年,没动过java了,已经不怎么记得清了。今天参考网上教程重新helloworld了一下,做个记录
几个概念:
J2SE = Java 2 Standard Edition = Java2标准版 J2EE = Java 2 Enterprise Edition = Java2企业版(包括JSP/Servlet、EJB、JNDI、JTA等) J2SDK = JDK = Java 2 Standard Development Kit = Java2标准开发工具集 J2RE = JRE = Java 2 Runtime Environment = Java2运行时环境 JVM = Java Virtual Machine = Java虚拟机
1. 下载jdk
google 吧 我下载的是 jdk-6u10-rc2-bin-b32-windows-i586-p-12_sep_2008.exe
2. 安装略
默认安装路径为C:\Program Files\Java\jdk1.6.0_10
3. 配置几个系统变量
JAVA_HOME:C:\Program Files\Java\jdk1.6.0_10 CLASSPATH:.;%JAVA_HOME%\lib
Path:%JAVA_HOME%\bin;
4. 编辑个HelloWorld.java
public class HelloWorld { public static void main(String arg[]) { System.out.println("Hello, World!"); } }
5. 编译
javac HelloWorld.java –> 生成javac HelloWorld.class
6. 运行
java HelloWorld –>> 输出 Hello,World!
参考:
1. http://www.cnbruce.com/blog/showlog.asp?cat_id=30&log_id=288
2. http://myboypaopao.iteye.com/blog/319153
转载于:https://my.oschina.net/sanpeterguo/blog/79054
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