To check which version of Java you have on your Windows computer, you'll need to open the Command Prompt.

Java is a very extensively used programming language. In this article, we explain how you can run Java programs from the Command Prompt.

To do the same, open Command Prompt and then run the following command to check which version of Java is installed on your computer.

You can check which Java version is on your Mac to see if you have the most up-to-date Java running, or you can check on the Java website.

Which version of Java should you use in Linux? Learn how to easily switch between different versions with a tutorial from Jack Wallen.

Disabling Java in OS X requires doing so for each user account; however, even terminal commands for doing this may be a bit impractical to use as a substitute.

How to check hard drive information using Command Prompt If you need to find out the hard drive serial number, model, firmware version, and other information, you can use the wmic with Command Prompt.

There are three simple ways to set JAVA_HOME in Windows. This tutorial shows you how to do it manually, from the command line and through the installer.

If you’re here until now, then you have probably understood how to check battery status using the Linux command line. The above methods work as expected in order to find out your battery information.

But these aforementioned Java command-line tools -- namely, javac, javap, jstat, jdeps and jar -- are the five that serious software developers need to know.