Why is singleton instance static?
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What is the difference between inheritance and encapsulation?
What differences exist between iterator and listiterator?
Why are getters and setters used?
What do you mean by ordered and sorted in collections in java?
Explain different data types in Java.
What is the main advantage of passing argument by reference?
what is meant by abstract class?
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Write a program based on Java script program.
Which types of exceptions are caught at compile time?
Why method overloading and method overriding required in java?