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Core Java Interview Questions
Questions Answers Views Company eMail

What is covariant return type?

 630

Explain different forms of polymorphism?

 644

Is there any difference between synchronized methods and synchronized statements?

 567

Tell us something about an iterator.

 542

Write a code to show a static variable?

 604

What is super?

 573

Can we declare a static variable inside a method?

 519

What do you understand by soft reference?

 577

If a class is declared without any access modifiers, where can the class be accessed?

 588

What is instance synchronization?

 530

What is callablestatement? How you can call stored procedure to pass in parameter?

 537

Are the imports checked for validity at compile time? Will the code containing an import such as java.lang.abcd compile?

 582

What is the common usage of serialization?

 565

What is a prefix function.write down a code to compute prefix function.

 530

What are some alternatives to inheritance?

 549

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Un-Answered Questions { Core Java }

What is array command?

548

What are heap memory and stack memory and what are memory tables.

502

Is static a keyword in java?

516

Why java doesn’t support multiple inheritances?

571

What is class variable java?

576




How do you use equal in java?

539

What is the flag in java?

599

Can constructor be inherited?

572

Tell me a few examples of final classes defined in Java API?

555

When parseint method can be used?

529

What is definition and declaration?

514

What is boolean logic?

555

Is array serializable java?

510

Explain the purpose of garbage collection in Java?

564

Differentiate between a class and an object.

556

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