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Java Topic / Java tutorial We have seen the class hierarchies - Entertainments example in 101 and IceCreamPrices example in 111. The class hierarchies look similar except that there is minor difference between them. IceCream is a concrete super-class where as Entertainment is an abstract super-class. The difference is explained below.

JSP Tutorial - Javatpoint website provides you a complete JSP tutorial with practical programming examples and easy steps using this beginner's tutorial containing basic to advanced knowledge of Java JSP Technology including Form Data, HTTP Request Header, Response Header, Scripting elements, Directive elements, Custom tags, Cookies Handling and Session Tracking.

How HashMap works in Java or sometime how get method work in HashMap is common interview questions now days. Almost everybody who worked in Java knows what hashMap is, where to use hashMap or difference between hashtable and HashMap then why this interview question becomes so special? Because of the breadth and depth this question offers. It has become very popular java interview question in almost any senior or mid-senior level java interviews. Questions start with simple statement "Have you used HashMap before" or "What is HashMap? Why do we use it "

Nice example for vector

Best article I have come acrsoo about wait()notify() and notifyAll() methods in java in internet. these method forms the inter-thread communication and correct understanding of these methods are must. wait() and notify)() method has to be called from synchronized method or block but why ?? This same questions was asked in a Java interview to me and I didn't know the correct answer ahh.