Go Modify/Set environment variable Java_home under Linux

1. Permanent modification, valid for all users

# Vi/etc/profile

//Press keyboard [Shift + G] To add the following at the end of the profile file:

Export Java_home =/home/myuser/jdk1.7.0_03
Export PATH = $JAVA _home/bin: $PATH

Export classpath=.: $JAVA _home/lib/dt.jar: $JAVA _home/lib/tools.jar

[Note]: If you want to take effect immediately after the file is modified, run #source/etc/profile

2. Permanent modification, valid for single user

//Modify the. bash_profile file in the user directory

$ vi/home/myuser/.bash_profile

//Add the following content to the end of the file

Export Java_home =/home/myuser/jdk1.7.0_03
Export PATH = $JAVA _home/bin: $PATH

Export classpath=.: $JAVA _home/lib/dt.jar: $JAVA _home/lib/tools.jar

[Note]: If you want to take effect immediately after the file is modified, run #source/home/myuser/.bash_profile

3. Only valid for current Bash/shell

$ export Java_home =/home/myuser/jdk1.7.0_03

$ Export PATH = $JAVA _home/bin: $PATH

$ export classpath=.: $JAVA _home/lib/dt.jar: $JAVA _home/lib/tools.jar