What is volatile data type?
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Difference between a MenuItem and a CheckboxMenuItem?
What is difference between protected and private?
What do you understand by a Static Variable?
Can u write constructor in abstract.If yes den when it will be invoked.
how can we synchronize Hash map?
Can the interface be final?
I have a class which is abstract which contains only the abstract methods. This is similar to an interface. Then, if i have given a choice to choose one of them. Which one i have to choose and why?
What are 3 boolean operators?
What are the different types of sorting in java?
what is the main class of all the classes
Is singleton class immutable?
Is java a digit method?