Can a singleton class be inherited?
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How can we avoid including a header more than once?
Which method cannot be overridden in java?
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What will happen if there is a default method conflict as mentioned above and we have specified the same signature method in the base class instead of overriding in the existing class ?
how we can make a write-only class in java?
What is ‘is-a ‘ relationship in java?
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What is garbage collection in Java, and how can it be used ?
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