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My great thanks to this post. The code given by you is very useful. It is nice combination of Java applet
and MySQL. I find code very useful. I really appreciate your work. I am sure many people...

Abstract class is partially implemented class. Some of the methods in this class are complete but some of them are partially completed. One important thing is that we cannot make the object of this...

The interfaces could be used for the inheritance between unrelated classes that are not part of the same hierarchy or anywhere in the hierarchy. Using the interface you can specify what to do a class...

The objects are loaded into memory before processing. The newly created object must be a newly allocated memory to hold instance variables of the object, this is done by the Java Virtual Machine...