Hi Rak, Welcome to JavaRanch. The short answer is you don't need it. Multiple inheritance creates more problems than it solves. You can implement as many interfaces as you want which gives a similar but simpler and safer effect of multiple inheritance. Do a search here at JavaRanch and you will find this topic discussed ad nauseum.
Any intelligent fool can make things bigger, more complex, and more violent. It takes a touch of genius - and a lot of courage - to move in the opposite direction. - Ernst F. Schumacher