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Core Java Interview Questions
Questions Answers Views Company eMail

briefley expalin about the packages

 3 3332

explain about method overloading and method overriding with difficult examples

 4 5710

explain the concept of virtual method invocation in polymorphism in detail?

TCS,

1706

Addition to previous section relative word 5th one was Putrid ans: rotten, also there was prob. in 1st section on bucket weight ans:10kg, also there was a prob. on train speed to find bridge length ans:800 mtrs.

V2 Solutions,

1600

we have a 100 classes at that time which class we have to write main method? pls help me

Wipro,

6 6257

class A { public void disp(int a,int b) { System.out.println("hai"); } } class B { public void disp(int a,int b,int c) { System.out.println("hai"); } } above program is overloading or overriding?

Infosys, Wipro,

9 11319

where to use join method and explain with real time senario?and programatical explenation also..

TCS,

1 4044

In a container there are 5 components. I want to display all the component names, how will you do that?

 1553

What is the exact difference in between Unicast and Multicast object?

 1500

Where will it be used?

 1500

What is the main functionality of the remote reference layer?

 1407

How do you download stubs from Remote place?

 1350

I want to store more than 10 objects in a remote server? Which methodology will follow?

 2626

What is the main functionality of Prepared Statement?

 4 6191

What is meant by Static query and Dynamic query?

 2 5588

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Un-Answered Questions { Core Java }

what is the major difference between linkedlist and arraylist in java?

542

Difference between serialization and deserialization in java?

644

What are facelets templates?

585

what is a green thread? : Java thread

565

Explain the difference between collection api and stream api in java8?

501




What is meant by class loader? How many types are there? When will we use them?

497

Explain the importance of throws keyword in java?

561

What is array class in java?

588

How do you avoid global variables?

535

What is the use of optional ?

556

How do you test a method for an exception using junit?

527

What is the use of default method in interface in java? Explain

539

What is an eror in java?

552

Why do we need singleton class?

542

What is a dynamic array java?

503

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