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 is scope & storage allocation of static, local and register variables? Explain with an example.

IBS,

1014

How will you reverse a link list without using recursion?

Global Logic,

1033

What is meant by stack and queue?

GrapeCity,

1069

What is the difference between heap memory and stack memory?

Aspiring Minds,

1073

What Is Query Throttling in java?

HCL,

999

What do you mean by Function Overloading in java?

Impetus,

1179

How to remove the trailing spaces from a string?

Infogain,

1274

how many types of Inheritance?

Impetus,

1176

Difference between a process and a program?

Infosys,

1114

What is the benefit of using enum to declare a constant?

Aspire, Infogain,

1103

Define "Access specifiers" in java.

HCL,

1170

What are the different approaches to implement a function to generate a random number?

Axtria, ITC Indian Tobacco Company,

1059

What are abstract classes and anonymous classes?

Flextronics, Thomson Reuters, Virtusa,

1075

Explain the differences between static and dynamic variables?

Fidelity,

1150

How would you dynamically allocate memory to an array?

Atos Origin,

1040

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Un-Answered Questions { Core Java }

What if constructor is protected in java?

1122

What is the difference between form & report?

1036

What is jvm? How its run?

1084

Is java hashset ordered?

1112

What is collection api?

1051

Is main an identifier?

1012

What are the limitations of procedural programming approach?

1052

What are the skills required for core java?

1017

Is math an abstract class in java?

1008

What is byte data type?

999

what is thread? What are the high-level thread states? Or what are the states associated in the thread? : Java thread

984

Can we create a class inside a class in java?

1081

What is tostring () method?

1032

What is a vararg?

1036

What is a numeric format?

1094

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