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Core Java Interview Questions
Questions Answers Views Company eMail

What are the methods of object class ?

 554

What are different types of inner classes ?

 543

What is stringjoiner ?

 567

Difference between final and effectively final ?

 621

Difference between abstract and concrete class ?

 573

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

 542

Can we access instance variables within static methods ?

 558

What is the use of optional ?

 556

Difference between doublesummarystatistics, intsummarystatistics and longsummarystatistics ?

 540

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

 544

Similarity and difference between static block and static method ?

 526

Difference between class#getinstance() and new operator ?

 638

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

 557

Describe what happens when an object is created in java ?

 540

Difference between == and .equals() ?

 565

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Un-Answered Questions { Core Java }

What is files manifesting?

1714

What means public static?

554

What is function and method in java?

514

When wait(), notify(), notifyall() methods are called does it releases the lock or holds the acquired lock?

535

Can you override a final method?

569




What is :: operator in java?

498

What is the biggest integer?

539

What is super keyword explain with example?

523

What is lexicographically smallest string?

588

What are byte codes?

645

What do you know about java?

512

What is thread life cycle?

531

Write a program to print fibonacci series up to count 10.

508

What is the difference between conversation & casting?

562

What is the main purpose of java?

504

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