Are strings immutable in java?
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What is the difference between abstraction and encapsulation?
Why are the destructors for base class and derived class called in reverse order when the program exits
What is difference between char array and string?
Explain constructors and types of constructors in java.
Why Static variable required in java?For ex,class A { static int a; int b; } Why static is required?
What are the differences between wait() and sleep()?
Does printwriter create a file?
What are encapsulation, inheritance and polymorphism?
Difference between start() and run() method of thread class?
How big is a pointer?
Convert a binary search tree to a sorted doubly linked list inplace.
Explain about procedural programming language or structured programming language and its features?