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

Core Java Interview Questions

Questions Answers Views Company eMail

briefley expalin about the packages

3 4397

explain about method overloading and method overriding with difficult examples

4 7073

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

TCS,

2162

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,

2125

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

Wipro,

6 7930

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 13532

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

TCS,

1 4801

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

2143

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

2054

Where will it be used?

1896

What is the main functionality of the remote reference layer?

1955

How do you download stubs from Remote place?

1727

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

3137

What is the main functionality of Prepared Statement?

4 7503

What is meant by Static query and Dynamic query?

2 6433

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Un-Answered Questions { Core Java }

What is stack explain?

939

Can a source file contain more than one class declaration?

916

How to display all the prime numbers between 1 and 100

949

What are the types of casting?

1010

Can we write any code after throw statement?

1014

How we can generate random numbers in java?

1087

I want to print “hello” even before main is executed. How will you acheive that?

1049

What is printwriter in java?

906

What is final modifier?

995

Is null function in java?

985

Why use string handling in Java?

996

What do you mean by an object in java?

1082

Explain Basics of OOP Language in java

993

is it possible to instantiate the math class?

975

What is string value?

1098

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