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Core Java Interview Questions
Questions Answers Views Company eMail

What are the methods of object class ?

 565

What are different types of inner classes ?

 567

What is stringjoiner ?

 579

Difference between final and effectively final ?

 641

Difference between abstract and concrete class ?

 583

Can we create an object if a class doesn't have any constructor ( not even the default provided by constructor ) ?

 559

Can we access instance variables within static methods ?

 574

What is the use of optional ?

 572

Difference between doublesummarystatistics, intsummarystatistics and longsummarystatistics ?

 555

Difference between final and effectively final ? Why is effectively final even required ?

 563

Similarity and difference between static block and static method ?

 541

Difference between class#getinstance() and new operator ?

 652

What is a lambda expression ? What's its use ?

 567

Describe what happens when an object is created in java ?

 555

Difference between == and .equals() ?

 579

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Un-Answered Questions { Core Java }

What is anagram word?

525

Is integer immutable in java?

552

What is stringjoiner ?

579

Can we override constructors in java?

682

Can we override tostring method in java?

535




What is polymorphism java example?

552

Can we restart a thread already started in java?

584

What is final modifier?

560

What is bean? Where it can be used?

609

What is the purpose of the system class in java?

558

How do you use compareto method?

539

How to add menushortcut to menu item?

567

Explain about oops concepts.

638

What is the difference between an if statement and a switch statement?

652

What is the list interface?

612

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