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 a Hash Table? What are the advantages of using a hash table?

Ciena,

1139

What is a Transient Object?

InfoAxon Technologies,

1137

Why declare Main() method as a static in java ?

HCL,

1126

This abstract class is correct ? abstract class A { public abstract void Disp(); public abstract void B() { } public absract virtual C() { } }

HCL,

1048

What are memory tables?

Aspiring Minds,

1156

Explain the selection sort algorithm?

Hexaware,

1122

What are daemon Threads in java?

Impetus,

1270

What is the basic concepts of OOPS?

BlackRock,

1252

What is backdrop?

Atos Origin,

1144

Can we store variables in local blocks?

Global Logic,

1418

Write a program to search a number in the given list of numbers.

Honeywell,

1083

What is a default constraint?

HCL,

1121

What isan abstract class and when do you use it?

Genpact,

1 1672

What do you understand by Header linked List?

Genpact,

1163

Difference between current previous versions of Java?

Atos Origin,

1083

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Un-Answered Questions { Core Java }

What is %02d?

1151

Can we clone singleton object?

1129

How can I right-justify a string?

1263

5 Coding best practices you learned in java?

1064

What is string in java? String is a data type?

1063

can any body body expalin best definitions & best real time exaples for opps concepts.

2328

What is a programming object?

1186

What are the advantages of java over C++?

1258

Can we inherit a class with private constructor?

1182

Explain hashset and its features?

1221

What is an infinite loop? How infinite loop is declared?

1175

Write a program in java to create a doubly linked list containing n nodes.

1027

What is java english?

1091

What does s mean in regex?

1071

What is multi level inheritance in java?

1085

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