How to Check for a Java Version

By Josh Baum

Sun Microsystems releases new versions of Java Runtime Environment, its essential Web plug-in, on a regular basis. Keeping your version up-to-date is necessary if you want to enjoy the latest rich Web content, but with so many versions, you may have a hard time keeping track of the one installed in your browser. Fortunately, the answer is right there on the computer, waiting to be discovered.

Step 1

Click the Start button, and select Run from the Start menu.

Step 2

Enter "cmd" (without the quotation marks) in the Run field, and then click the Run button.

Step 3

Enter "java -version" (without the quotation marks) at the command prompt and press Enter.

Step 4

Look at the text that appeared below the command prompt. It includes the currently installed version number and information.