Where is singleton pattern used?
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what is object type casting? give some example with related?
Name the components that are termed to be Heavy-weight component but available in Light-weight components?
What happens if we override only equals?
How large is a boolean?
Why we use protected in java?
Why put method is idempotent?
Why we need Finally with try? pls expain with ur example..
how tha garbage collector know that the object will be deleted? on which algorithm the garbage collector works? what is the working principle of garbage collector? How manay types of garbage collectors r there?
What is array length?
What happens when a class is made static like if a field or member is made static it becomes class variable and is shared by all the object of the class?
What is run time polymorphism?
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How to override equals() and hashCode() method in java?