Hey Sandeep, If you are talking about the programming language JAVA ? It is not an acronym. AFAIK there is not even a third party expansion for this. Same can be seen in SUN website
B1. Where did the Java name come from? What does it stand for?
The name was chosen during one of several brainstorming sessions held by the Java software team. We were aiming to come up with a name that evoked the essence of the technology -- liveliness, animation, speed, interactivity, and more. "Java" was chosen from among many, many suggestions. The name is not an acronym, but rather a reminder of that hot, aromatic stuff that many programmers like to drink lots of.