/usr/libexec/java_home -V
this will list all the Java Versions on the machine
select the specific version using:
export JAVA_HOME=`/usr/libexec/java_home -v 1.8.0_125`
or just specify the major number
export JAVA_HOME=`/usr/libexec/java_home -v 1.8`
Now run
java -version