How do weakhashmap works?
What is meant by class and object in java?
Can you give few examples of final classes defined in java api?
What is main difference between variable and constant?
What are the parts of methodology?
What is string builder?
where is .equals() method and how is it different from == operation <giving some confusing implementation> Is hashing related to these?
What we have to do, when we don't want to implement all methods of an interface?
Which class has no duplicate elements?
Why string is not thread safe?
What is meant by class loader? How many types are there? When will we use them?
Explain the reason behind ending a program with a system.exit(0)?
Explain which of the following methods releases the lock when yield(), join(),sleep(),wait(),notify(), notifyall() methods are executed?