MAC 修改java jdk环境变量

cd ~/

touch .bash_profile

open -e .bash_profile

================

JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk-11.0.11.jdk/Contents/Home
PATH=$JAVA_HOME/bin:$PATH:.
CLASSPATH=$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar:.
export JAVA_HOME
export PATH
export CLASSPATH

===============

source .bash_profile

echo $JAVA_HOME