Answer Posted / stranger_ajnabi53@yahoo.c

they are
1.polymorphism
2.abstraction
3.inheritance
4.encapsulation

What happens if an exception is throws from an object's constructor?

1134

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When do we use synchronized methods in java?

1050

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How many types of operators are there?

986

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How we can declare a static variable?

1111

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What is n in java?

958

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Give a practical example of singleton class usage?

1059

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How do you get length in java?

1036

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Can we cast any other type to boolean type with type casting?

961

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What is a priority queue java?

998

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I have multiple constructors defined in a class. Is it possible to call a constructor from another constructor’s body?

1016

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What is the difference between serializable and externalizable interfaces?

1102

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Is empty in java?

1063

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How do you clear an arraylist in java?

991

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what is the difference between Object Based Language and Object Oriented Language?

1040

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Where is the singleton class used?

1032

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