Answers for "how to find java version"

java check java version

java -version  #for jre version
javac -version  # for java compiler version

check java version

java --version

how to check which java version i have

java -version

check Version of java

$ java -version
java version "1.8.0_121"

how to check the version of java installed on my computer

// If you have the Java Runtime Environment (JRE) version installed, run this command on your terminal(Command Prompt - for windows):
java -version

// If you have the Java Compiler version installed, run this command [still on your terminal(Command Prompt - for windows)]:
javac -version