instance of java

java java servlet synchronization -instance_of_java serialization request dispatcher-in_servlet polymorphism in-java oops multithreading jsp life-cycle jsp in-java java string-_string_buffer_and_stringbuilder inheritance final keyword final finally-and_finalize filters in-java exception handling enhanced for-loop constructors command line-arguments collection framework list collection framework class auto unboxing autoboxing boxing unboxing abstract class servlet architecture request dispatcher in java jsp scripting elements in java jsp life cycle jsp in java filters in java servlet life cycle servlet config java servlest