MacOS Java version Dynamic switching

MacOS Java version Dynamic switching

1 Modifying the configuration file

$ VI ~/.bash_profile

2 Modify the contents of the file

# set JDK 6
export java_6_home= '/usr/libexec/java_home-v 1.6 '
# set JDK 8
export java_8_home= '/usr/libexec/ Java_home-v 1.8 '

# Set default JDK
export java_home= $JAVA _8_home

# Set the alias command to dynamically switch JDK versions
alias jdk6= "Export Java_home= $JAVA _6_home "
alias jdk8=" Export java_home= $JAVA _8_home "

3 Entry into force

$ source ~/.bash_profile

4 Switch JDK version

$ jdk6