What is difference between stringbuffer and string?
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What is the basic concepts of OOPS?
I want to persist data of objects for later use. What is the best approach to do so?
What is method and methodology?
What are virtual functions?
What is an array and a vector? How they different from each other?
How many types of exception can occur in a java program?
What is the java idl system?
Life Cycle of Thread
Why declare Main() method as a static in java ?
What is off heap memory?
When does an object becomes eligible for garbage collection in java?
Is integer immutable in java?