How to check which version of Java you are running on Linux

Open a new Terminal Window

Type in the command

java -version

The output should look similar to the below:

java version "1.7.0_95"
OpenJDK Runtime Environment (IcedTea 2.6.4) (7u95-2.6.4-3)
OpenJDK 64-Bit Server VM (build 24.95-b01, mixed mode)

The above code indicates that you are running Java SDK version 7 on your server