How to Set $JAVA_HOME environment variable on macOS
1.echo$SHELLcanshowwhatshellyouareusing.$echo$SHELL/bin/bash2.Whatis/usr/libexec/java_home2.1OnMacOSX10.5orlater,wecanuse/usr/libexec/java_hometoreturnthelocationofthedefaultJDK.$/usr/libexec/java_hom