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Object Oriented Language

Object Oriented Language

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What is the purpose of the "new" keyword in Java?

To create an object

To declare a class

To initialize a variable

To call a method

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Which access modifier allows access to a class, method, or variable from anywhere?

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Can a class have multiple methods with the same name but different parameter lists?

Yes, but only if the methods are static

Yes, but only if the methods have different return types

No, a class cannot have multiple methods with the same name but different parameter lists

Yes, a class can have multiple methods with the same name but different parameter lists

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What is the purpose of the "super" keyword in Java?

To refer to the subclass

To refer to the interface

To refer to the superclass

To refer to the current object

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Can a class have an abstract method?

Yes, but only if the class is final

Yes, but only if the class is abstract

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Can a class have a static constructor?

Yes, but only if the constructor is declared as final

Yes, but only if the constructor is declared as abstract

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Can a private constructor be used to prevent inheritance?

Yes, private constructors can be used to prevent inheritance

Yes, but only if the class is final

Yes, but only if the class is abstract

No, private constructors cannot be used to prevent inheritance

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Which access modifier allows access to a class, method, or variable only within the same class?

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What is the purpose of the "static" keyword in Java?

To declare a method that can be called without creating an object

To declare a class that can be instantiated only once

To declare a variable that can be accessed by all objects of the class

To declare a variable that can be accessed only by the current object

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What are the two types of polymorphism in Java?

Method overloading and method hiding

Method overloading and operator overloading

Method overriding and method hiding

Method overloading and method overriding

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