Can an arraylist be empty?
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Suppose there is an Online shopping cart application having different objects like Cart, SelectionItem, Billing, COnfiguration, Authentication, Authorization, PersonalDetails etc. Out of this which one can be made a singleton pattern and why?
what do you mean by classloader?
When you Click a Button, What event will be fired?
is it possible to instantiate the math class?
How to send a request to garbage collector?
What is meant by string is immutable?
What is native method in java?
What is difference between null and void?
Interface A { String test(); } Interface B { int test(); } Create a class AB which must implements both A & B interfaces.
What is the difference between processes and threads?
Explain serialization and deserialization in java?
What is the private method modifier?