What is meant by local variable and instance variable?
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What is class level lock ?
When do we use hashset over treeset?
What are different type of access modifiers?
What is fail first in java?
What is the difference between parameters and arguments ?
If a multi threaded Java program has started numerous number of threads, at any point in time how to know which thread is currently executing/running ?
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State the difference between creating string as new () and literal.
what r callable statement and give their proper use
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Why heap memory is called heap?
what are three ways in which a thread can enter the waiting state? : Java thread
What is the difference between the reader/writer class hierarchy and the inputstream/outputstream class hierarchy in java programming?