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Frequently Asked Java Programming - Definition Technical Interview Questions

(#M40029406) JAVA QUESTION java Keep an EYE

Q. Why there are no global variables in Java?

A. Global variables are globally accessible. Java does not support globally accessible variables due to following reasons:
1)The global variables breaks the referential transparency
2)Global variables creates collisions in namespace

Asked In Java MAN (12 years ago)

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(#M40029409) JAVA QUESTION java Keep an EYE

Q. What is method overloading and method overriding?

A. Method overloading: When a method in a class having the same method name with different arguments is said to be method overloading. Method overriding : When a method in a class having the same method name with same arguments is said to be method overriding.

Asked In Java MAN (12 years ago)

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(#M40029410) JAVA QUESTION java Keep an EYE

Q. What is the difference between this() and super()?

A. This() can be used to invoke a constructor of the same class whereas super() can be used to invoke a super class constructor.

Asked In Java MAN (12 years ago)

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(#M40018879) JAVA QUESTION JAVA QUESTIONS Keep an EYE

What is Runtime Polymorphism?

Asked In Java (12 years ago)

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(#M40101790) JAVA QUESTION JDBC Drivers Keep an EYE

Which is the best driver out of below??
a)JDBC-ODBC(Type1)
b)native API(Type2)
c)Network protocol(Type3)
d)native protocol(Type4)

Asked In Java Anil kumar B B (10 years ago)

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(#M40029421) JAVA QUESTION java Keep an EYE

Q. What is the purpose of Void class?

A. The Void class is an uninstantiable placeholder class to hold a reference to the Class object representing the primitive Java type void.

Asked In Java MAN (12 years ago)

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(#M40018853) JAVA QUESTION JAVA QUESTIONS Keep an EYE

What are the states of object in hibernate?

Asked In Java (12 years ago)

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(#M40018858) JAVA QUESTION JAVA QUESTIONS Keep an EYE

What does the hashCode() method?

Asked In Java (12 years ago)

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(#M40147204) JAVA QUESTION Interfaces Keep an EYE

What is the default modifier for variables declared in interfaces.

Asked In Java Vaishali (10 years ago)

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(#M40032819) JAVA QUESTION Keep an EYE

can we declare a subclass as a public
whose upper class has already been declared as private?

Asked In Java (11 years ago)

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