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,

1101

In Java list the methods that can be overridden?

Accenture,

1058

What do you mean by stack?

Accenture,

1206

Explain the term virtual machine?

Adobe,

1092

What is role of void keyword in declaring functions?

Adobe,

1102

Define array. Tell me about 2-D array.

Agilent,

1109

Give an example of call be reference significance.

Agilent,

1086

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

Agilent,

1188

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

Agilent,

1222

Differentiate between nested and inner class in java.

Akamai Technologies,

1050

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

Akamai Technologies,

1103

Define Multiprogramming and Multiprocessing in java.

Akamai Technologies,

1227

Explain an algorithm to find depth of a binary tree.

Akamai Technologies,

1108

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,

1053

How to declare objects of a class ?

Akamai Technologies,

1131

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Un-Answered Questions { Core Java }

What is the main difference between java platform and other platforms?

1184

Explain about the main() method in java?

1186

What is java instanceof operator?

1105

How does class forname work in java?

1025

What are assembly attributes?

1069

Explain some best practices you would apply while using collection in java?

1102

Why does abstract class have constructor?

1068

What is linked hashmap and its features?

1079

Can we have a method name same as class name in java?

1101

What is the properties class in java programming?

1058

What happens when I use / and % with a negative numerator?

1083

Why java strings are immutable in nature?

1129

difference between byte stream class and character stream class?

4606

How to create a thread in java?

1197

What is stream api in java8?

1280

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