OS X has historically come with Java pre-installed, but even though it is optional in the latest version (OS X Lion), unfortunately once installed on a system there is no official way to uninstall it.

To do the same, open Command Prompt and then run the following command to check which version of Java is installed on your computer. If it gives you a result, Java is installed, otherwise, move to ...

2. The Java profiler: javap You can consider the Java command-line tool javap a complement to the javac utility. While javac compiles code, the javap utility reverses that compilation and provides ...

At the command prompt, type “java -version” (again, no quotes). Users also can visit Java.com and click the “Do I have Java?” link on the homepage.

Millions of computer users were advised Friday to temporarily disable Oracle’s (ORCL) Java software because of security weaknesses that make their machines vulnerable to everything from virus ...