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,

1137

What is a Transient Object?

InfoAxon Technologies,

1136

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,

1046

What are memory tables?

Aspiring Minds,

1155

Explain the selection sort algorithm?

Hexaware,

1120

What are daemon Threads in java?

Impetus,

1267

What is the basic concepts of OOPS?

BlackRock,

1252

What is backdrop?

Atos Origin,

1139

Can we store variables in local blocks?

Global Logic,

1415

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

Honeywell,

1081

What is a default constraint?

HCL,

1119

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,

1081

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Un-Answered Questions { Core Java }

Difference between current previous versions of Java?

1081

Why java is object oriented?

1084

What is the platform?

1056

What is the method in java?

1141

What is multithreading in java?

1111

What is data string?

1052

What is integer size in java?

1096

What is a boolean expression in java?

1077

What is a constructor, constructor overloading in java?

1046

How can you handle java exceptions?

1079

What are methods in java?

1041

Why we do exception handling in java and how many types of exceptions are there?

1186

What is array size in java?

1020

How do you test a method for an exception using junit?

1271

What do you mean by object?

1034

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