What is a top level class in java?
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What is arraylist class in java?
Why is flag used in java?
Which is the best sorting technique in java?
how to create multithreaded program? Explain different ways of using thread? When a thread is created and started, what is its initial state? : Java thread
what is life cycle of applet?
How many types of string data types are there?
what is purpose of collections.unmodified() method..?
What does system.gc() and runtime.gc() methods do?
What about main thread in java?
How will you convert an ArrayList to Arrays?
What is struts in java?
What are triggers in DB? Explain their types. How do they work?