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 4398

explain about method overloading and method overriding with difficult examples

4 7075

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

TCS,

2164

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,

2126

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

Wipro,

6 7934

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 13534

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

TCS,

1 4803

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?

1957

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?

3139

What is the main functionality of Prepared Statement?

4 7508

What is meant by Static query and Dynamic query?

2 6437

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Un-Answered Questions { Core Java }

How to implement an arraylist in java?

1065

How much ram can a 64 bit processor theoretically?

837

What is the similarity between dynamic binding and linking?

1068

extending thread class or implementing runnable interface. Which is better? : Java thread

960

Is simpledateformat safe to use in the multithreaded program?

957

What is the difference between superclass and subclass?

1094

Objects or references which of them gets garbage collected?

919

How are java objects passed to a method and what are native methods?

1026

What is locale in java?

980

Can a constructor be protected?

1038

What is use of functional interface in java 8? Explain

958

Can a private method of a superclass be declared within a subclass?

974

List the interfaces which extends collection interface?

897

What is the equal sign?

1043

Does importing a package imports its sub-packages as well in java?

935

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