What is the difference between throw and throws keywords?
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What are the fileinputstream and fileoutputstream?
What is a concrete classes? Is Java object class is concrete class?
Explain the available thread states in a high-level?
Is 0 true or false in java?
when asub class inherits a super class and overrides a public method of super class in sub class(public method in super class). why these methods needs to be public in sub class. (otherwise compile time error).
what is ennumaration?
What is variable and constant explain with example?
what is the messsage u r going to get from an objectoriented programing?
What is off heap memory?
can we have virtual functions in java?
What are library required to connect to excel sheet.
What are the advantages of packages in java?