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Core Java Interview Questions
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A class can be a subclass of itself?

Genesis,

2 9434

Are nested try statements are possible?

 2 4288

Is multiple inheritance allowed in Java? Why ?

 7 9555

Is 'null' a keyword?

 8 8006

Is 'sizeof' a keyword?

 7 15400

Does any tag exists in HTML to upload and download files ?

 3 7356

Are there any tools available in java to create reports?

 5 7954

Explain Connection Pooling?

 3 7505

What classes can be used to store arbitrary number of objects ?

 1 3401

Can you give names of Container classes?

Ordain Solutions,

1844

What are the names of interfaces that doesn't consists of method/s ?

 3 6557

What primitive Java types? Howmany are they and what are their names?

 3 4452

What are the names of Component subclasses that support painting?

 1 3046

What are teh sub-classes of a component class?

 2 4030

Name two subclasses of the TextComponent class?

 2 5547

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Un-Answered Questions { Core Java }

What is difference between path and classpath in java?

476

What is string data type?

544

What is anti pattern in java?

510

What is the purpose of main function in java?

528

Why are getters and setters used?

561




Can list have duplicates in java?

517

Why heap memory is called heap?

578

What do you understand by java virtual machine?

698

Explain wait() method of object class ?

624

How can we create an immutable class in java?

576

What does business logic mean?

497

Explain reverse a linked list recursive java solution?

519

What is charat ()?

525

What is the use of hashmap in java?

543

How to compare strings in java?

494

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