Why is singleton not thread safe?
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Why local variables are stored in stack?
Why are generics used?
adapter class ?
What are local variables?
Why do we use bufferedreader?
what is run time polymorphism
Explain the selection sort algorithm and state its time complexity?
Is java map thread safe?
What is boolean false?
What is difference between word and integer?
Is it compulsory for a try block to be followed by a catch block in java for exception handling?
What is a memory leak in java?