What is the base class of all classes?
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Define package in Java.
Difference between JDK, JRE, JVM
16 Answers Deloitte, HCL, Mind Tree, Oracle, Reliance, TCS, ThinkBox,
How to create an immutable class?
I want my class to be developed in such a way that no other class (even derived class) can create its objects. How can I do so?
What is append function?
What is a file pointer?
What is this keyword in java?
Can we use catch statement for checked exceptions when there is no chance of raising exception in our code?
What is supplier in java?
What is nan inf?
What error occurs if a try-catch-finally statement sequence does not have a catch clause?
write a program that list all permutations of ABCDEF in which A appears before B?
Core Java 
