Mac 环境变量配置
原文地址
http://www.mkyong.com/java/how-to-set-java_home-environment-variable-on-mac-os-x/
1. Mac OSX 10.5 or later
In Mac OSX 10.5 or later, Apple recommends to set the $JAVA_HOME
variable to /usr/libexec/java_home
, just export $JAVA_HOME
in file ~/. bash_profile
or ~/.profile
.
$ vim .bash_profile
export JAVA_HOME=$(/usr/libexec/java_home)
$ source .bash_profile
$ echo $JAVA_HOME
/Library/Java/JavaVirtualMachines/1.7.0.jdk/Contents/Home
Why /usr/libexec/java_home?
This java_home
can return the Java version specified in Java Preferences for the current user. For examples,
/usr/libexec/java_home -V
Matching Java Virtual Machines (3):
1.7.0_05, x86_64: "Java SE 7" /Library/Java/JavaVirtualMachines/1.7.0.jdk/Contents/Home
1.6.0_41-b02-445, x86_64: "Java SE 6" /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
1.6.0_41-b02-445, i386: "Java SE 6" /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
This Mac OSX has three JDK installed.
##return top Java version
$ /usr/libexec/java_home
/Library/Java/JavaVirtualMachines/1.7.0.jdk/Contents/Home
## I want Java version 1.6
$ /usr/libexec/java_home -v 1.6
/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home