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Core Java Interview Questions
Questions Answers Views Company eMail

What is update method and when it is called?

TCS,

2 17816

When we will use an Interface and Abstract class?

 9 24653

While opening the file, what type of exceptions can be caught?

 3 4685

What methods are called, When we navigate from one applet to another applet?

 1 5867

How 'java' got its name and what it stands for?

Wipro,

11 25882

Where the CardLayout is used?

 1 6502

Which Component subclass is used for drawing and painting?

 1 2641

Name the method of a Container that can be used to cause a container to be laid out and redisplayed?

 1 4152

Which Java operator is right associative?

 3 6495

What is the method used to get the absolute value of a number?

 2 4325

Name the method that is used to set a TextComponent to the read-only state?

 1 3868

In what types of operations an ArithmeticException will be thrown?

 3 5139

Which characters are allowed to use as the second character of an identifier, and which characters are not allowed?

 2 3828

Which class has no duplicate elements?

 8 12742

Which class is extended by all other classes?

 4 8454

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Un-Answered Questions { Core Java }

what invokes a threads run() method? : Java thread

424

How to instantiate member inner class?

452

How do you convert int to char in java?

416

Can we execute a program without main?

392

Which containers use a flowlayout as their default layout in java programming?

354




How do you implement tree mirroring in java?

448

What is a pointer and does java support pointers?

414

What are class types in java?

397

Can you tell me range of byte?

420

How do you get length in java?

400

Explain the difference between association, aggregation and inheritance relationships.

397

What is jrmp?

396

What is hasnext in java?

393

What is an interface in java? Explain

414

What ide should I use for java?

359

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