Core Java Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Core Java Interview Questions

Questions Answers Views Company eMail

Difference between a Scrollbar and a ScrollPane?

1 6568

What is the difference between a Window and a Frame?

Infosys, ProKarma,

6 22739

Explain break statement and continue statement?

3 12157

What are field variable and local variable?

3 14002

What is the difference between a public and a non-public class?

2 6599

Explain the difference between scrollbar and scrollpane?

1 11641

What is static and a non-static inner class?

3 6634

What is the difference between abstract class and interface?

Aspire,

3 5175

Tell me the difference between an applet and a Japplet?

1 3085

What is an array and a vector? How they different from each other?

4 6577

What is exception and error? and what is the difference between them?

2 5463

Explain difference between final, finally and finalize?

Cognizant,

3 27464

Explain the difference between getAppletInfo and getParameterInfo?

1 5782

What is the difference between panel and frame ?

HCL, IBM, Raim Techno Solutions,

7 73187

Explain the differences between public, private, protected and static?

4 30255

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Un-Answered Questions { Core Java }

Is array a class in java?

494

How can we pass argument to a function by reference instead of pass by value?

574

Can bool be null?

514

What is a java lambda expression?

545

What are the features of java?

521

When the constructor of a class is invoked?

580

Write a program to find the whether a number is an Armstrong number or not?

567

What is a function in programming?

545

What is string builder in java?

550

What are the super most classes for all the streams?

1158

what do you understand by synchronization? Or what is synchronization and why is it important? Or describe synchronization in respect to multithreading? Or what is synchronization? : Java thread

478

Difference between Preemptive scheduling vs. Time slicing?

560

What is the most important feature of java? What is an interface?

505

What is the function of compareto in java?

580

What are heterogeneous objects?

560

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