mac下查找设置$JAVA_HOME路径

java -version 

查看jre版本

$ java -version

java version "1.8.0_71"

Java(TM) SE Runtime Environment (build 1.8.0_71-b15)

Java HotSpot(TM) 64-Bit Server VM (build 25.71-b15, mixed mode)

可以使用工具命令“/usr/libexec/java_home”来定位JAVA_HOME

$ cat ~/.profile


JAVA_HOME=`/usr/libexec/java_home`
export JAVA_HOME


$ echo $JAVA_HOME
/Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home

另外可以使用-V选项列出所有版本的JAVA_HOME：

$ /usr/libexec/java_home -V
Matching Java Virtual Machines (3):
    1.7.0_45, x86_64: "Java SE 7"/Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home
    1.6.0_65-b14-462, x86_64: "Java SE 6"/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
    1.6.0_65-b14-462, i386: "Java SE 6"/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home


/Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home