What is the size of integer?
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What is the hashcode () and equals () used for?
How many types of classes are there in java?
What class of exceptions are generated by the java run-time system?
what is singleton in java?
Give me example of derived data types.
Can a constructor be made final?
Why do we create threads in java?
What exactly is a .class file?
What are the fileinputstream and fileoutputstream?
What is the default size of set in java?
Where is jre installed?
why string constant pool in java