Java Runtime Environment is made by the Oracle group for the windows users. It helps you to run the applets. ‘applets’ is a kind of program which is made by Java programming language and it gives you the more online experience than the html based software.See Also: PC errors or glitches bugging you? It could be drivers! Run a FREE scan and fix your PC now. Recommended: Fed up with your buggy PC? FREE diagnostics and full repair here: Download Now.