Explain about abstract classes in java?
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Can a source file contain more than one class declaration?
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"we cannot create an object of interface but we can create a variable of it".diacuss the statement with the help of an example.
When do we need to use internal iteration? When do we need to use external iteration?
How does static modifier work?
What is a local block?
What are E and PI?
Is integer passed by reference in java?
What are the main differences between the java platform and other platforms?
what is the use of custom tags? with example?
Can we declare array without size in java?
What exceptions occur during serialization?