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,

1055

How will you reverse a link list without using recursion?

Global Logic,

1084

What is meant by stack and queue?

GrapeCity,

1130

What is the difference between heap memory and stack memory?

Aspiring Minds,

1124

What Is Query Throttling in java?

HCL,

1049

What do you mean by Function Overloading in java?

Impetus,

1227

How to remove the trailing spaces from a string?

Infogain,

1356

how many types of Inheritance?

Impetus,

1219

Difference between a process and a program?

Infosys,

1163

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

Aspire, Infogain,

1177

Define "Access specifiers" in java.

HCL,

1218

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

Axtria, ITC Indian Tobacco Company,

1108

What are abstract classes and anonymous classes?

Flextronics, Thomson Reuters, Virtusa,

1139

Explain the differences between static and dynamic variables?

Fidelity,

1206

How would you dynamically allocate memory to an array?

Atos Origin,

1080

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Un-Answered Questions { Core Java }

what is the difference between thread and runnable types? : Java thread

1059

Which sorting is used in arrays sort in java?

1131

What is a method signature java?

1113

What are the two parts of a conditional statement?

1003

When we serialize an object does the serialization mechanism saves its references too?

1085

What is stack explain?

1084

What are the different types of collections in java?

1017

What is the synchronized method modifier?

1284

Explain about field hiding in java?

1001

Why we cannot override static method?

1128

Are floats faster than doubles?

1151

What is function overriding and overloading in java?

1176

How many boolean functions are there?

1018

how is final different from finally and finalize in java?

1109

What are the 8 data types in java?

1047

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