What is difference between == equals () and compareto () method?
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Explain the difference between runnable and callable interface in java?
What is lazy initialization in java?
what do you meant by Runtime Polymorphism?
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What does it mean to be immutable?
Why are generics used?
Where the CardLayout is used?
Why we override equals() method?
What is static import?
What is thread?
what is business objects?
Why runnable interface is used in java?
I have a String s = java; What is the output when I say s.replaceAll('j', 'k'); Also what is the value of s after replacing?