Java设置环境变量-阿里云

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哪个版本的java安装了JDK不需要设置环境变量？ 想问下java安装了JDK可以有哪个版本是不需要设置环境变量的？...

用java写的helloword，已设置过环境变量，但还是打不开程序。为啥阿？? 400 报错用java写的helloword，已设置过环境变量，但还是打不开程序。为啥阿？? 400 报错双击程序，命令提示符一闪就关了。啥都还没看清，就没了。。系统是win8 jdk1.7 环境变量：CLASSPATH D:\java\jdk1.7.0_17\jre\lib JAVA_HOME...

java为什么要设置环境变量 java为什么要设置环境变量...

linux查看java jdk安装路径和设置环境变量 [root@bogon ~]# source /etc/profile[root@bogon ~]# echo $JAVA_HOME/usr/java/jdk1.8.0_60/ ------------------------------------------------- windows： se...

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