What is thread safe singleton?
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Can an abstract class be final?
If an object reference is set to null, will the garbage collector immediately free the memory held by that object?
How does finally block differ from finalize() method?
What is busy spin, and why should you use it?
What is the function of http?
What is the % operator?
What are the advantages of compiled language?
write a program to create an arraylist and listeterator.and value should be enter through keyboard.
What is constant in programming?
What are the 8 data types in java?
what is private constructor?what are the uses of writing private constructor in our program?
Can we force garbage collector to run ?