What about abstract classes in java?
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Why char array is preferred over string for storing password?
why java uses class level type casting ?
What is the difference between DataInputStream and BufferedReader
How do you define a method?
as we know a static method could access static data and static method only. then how could main method call the object of aclass which is not static and other non static data
When is the garbage collection used in Java?
How to add and remove nodes in Jtree?
Make a data structure and implement an algorithm to print all the files in a directory. (The root directory can have sub-directories too.)
Difference between comparator and comparable in java?
Which of the following can be referenced by a variable? A. The instance variables of a class only B. The methods of a class only C. The instance variables and methods of a class
Write a program to print all permutations of string?
Assume a thread has lock on it, calling sleep() method on that thread will release the lock?