What is a final class in java?
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What are different type of access modifiers?
What is a copy constructor in java?
What are library required to connect to excel sheet.
Explain thread in java?
How to send a request to garbage collector?
What is use of functional interface in java 8? Explain
what is the meaning of java.lang and java.util
Explain about instanceof operator in java?
How does the garbage collector works in java?
How java is similar to c?
what is polymorphism with example?types of polymorphism?
In what type of containers, Border layout is a default layout?