to switch a Terminal session to Java 8 (which must be installed ;-):
export JAVA_HOME=`/usr/libexec/java_home -v 1.8`
mind the back-ticks!
to switch a Terminal session to Java 8 (which must be installed ;-):
export JAVA_HOME= `/usr/libexec/ java_home -v 1.8`
mind the back-ticks!