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 4539

explain about method overloading and method overriding with difficult examples

4 7235

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

TCS,

2223

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,

2166

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

Wipro,

6 8184

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 13853

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

TCS,

1 4892

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

2190

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

2123

Where will it be used?

1939

What is the main functionality of the remote reference layer?

1999

How do you download stubs from Remote place?

1788

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

3204

What is the main functionality of Prepared Statement?

4 7685

What is meant by Static query and Dynamic query?

2 6541

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Un-Answered Questions { Core Java }

What is the difference between method and means?

1077

Is double bigger than float?

989

Why hashcode is used in java?

972

Difference between collection, collection and collections in java?

1010

What is the method to expand and collapse nodes in a jtree?

1042

What is implicit object in java?

1079

What is default constructors?

1003

What is string example?

1052

What is the purpose of the strictfp keyword?

1164

Can arraylist hold different types java?

979

Why do we use return statement?

1039

What is a protected class in java?

995

How many types of methods are there?

1058

What is boolean law?

1066

Does a class inherit the constructors of its superclass in java programming?

1114

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