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

Core Java Interview Questions

Questions Answers Views Company eMail

What will happen if a thrown exception is not handled?

ABB, Akamai Technologies, Infogain,

1094

In Java list the methods that can be overridden?

Accenture,

1058

What do you mean by stack?

Accenture,

1204

Explain the term virtual machine?

Adobe,

1091

What is role of void keyword in declaring functions?

Adobe,

1097

Define array. Tell me about 2-D array.

Agilent,

1107

Give an example of call be reference significance.

Agilent,

1081

In case of inheritance what is the execution order of constructor and destructor?

Agilent,

1184

What is the difference between a vector & an array list?

Agilent,

1221

Differentiate between nested and inner class in java.

Akamai Technologies,

1050

'A class is a template for an object' explain this statement.

Akamai Technologies,

1101

Define Multiprogramming and Multiprocessing in java.

Akamai Technologies,

1223

Explain an algorithm to find depth of a binary tree.

Akamai Technologies,

1105

Given a singly linked list, how will you print out its contents in the reverse order? Can you do it with consuming any extra space?

Akamai Technologies,

1049

How to declare objects of a class ?

Akamai Technologies,

1127

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Un-Answered Questions { Core Java }

What are the different tags provided in jstl?

1003

What's the difference between an abstract class and interface in java?

1091

How many types of string data types are there?

1166

What is method overloading in java ?

1159

What is java objectoutputstream?

1030

Differentiate between a constructor and a method? Can we mark constructors final?

1244

How do you find the independent variable?

1131

What is the benefit of inner classes in java?

1142

Write a program to solve producer consumer problem in java?

1069

What is the instance of an object?

1272

What is methodological framework?

1094

placement papaers of spring computing technology

1456

Is ++ operator is thread safe in java?

1008

How do you reverse a string in java?

1206

What is the protected method modifier?

1089

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