What is difference between hashset and hashmap in java?
What is empty string literal in java?
what do you understand by synchronization? Or what is synchronization and why is it important? Or describe synchronization in respect to multithreading? Or what is synchronization? : Java thread
What are the access modifiers available in java?
What is the difference between serial and throughput garbage collector?
Is map ordered in java?
Is it possible to create Userdefined Unchecked Exception also?If Yes, give an example?
what is difference between signed & unsigned char?
What is type casting?
Which one will take more memory: an int or integer?
What are the advantages of java?
Can we override private methods?
What is a classloader in java?