win7环境下配置Java环境
==下载Java SE Development Kit 8u45==
http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
==环境变量配置==
1 JAVA_HOME:C:\Program Files\Java\jdk1.8.0_45
2 PATH:%JAVA_HOME%/bin;%JAVA_HOME%/jre/bin 3 CLASSPATH:.;%JAVA_HOME%/lib/dt.jar;%JAVA_HOME%/lib/tools.jar
==helloworld==
创建D:\work\demo\javatest\HelloWorld.java,内容如下
public class HelloWorld{ public static void main(String[] args) { System.out.println("Hello World!"); } }
==验证==
打开cmd、
cd D:\work\demo\javatest
>javac HelloWorld.java
没有输出为正确编译
>java HelloWorld
Hello World!
==下载eclipse==
==注意点==
设置完环境变量,要重新打开cmd,生效