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,

1088

What is a Transient Object?

InfoAxon Technologies,

1085

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

HCL,

1078

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

HCL,

989

What are memory tables?

Aspiring Minds,

1096

Explain the selection sort algorithm?

Hexaware,

1058

What are daemon Threads in java?

Impetus,

1202

What is the basic concepts of OOPS?

BlackRock,

1198

What is backdrop?

Atos Origin,

1068

Can we store variables in local blocks?

Global Logic,

1351

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

Honeywell,

1035

What is a default constraint?

HCL,

1069

What isan abstract class and when do you use it?

Genpact,

1 1603

What do you understand by Header linked List?

Genpact,

1103

Difference between current previous versions of Java?

Atos Origin,

1022

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Un-Answered Questions { Core Java }

Which list does not allow duplicates in java?

938

How do you replace all in word?

1066

Is vector ordered in java?

995

How to restrict a member of a class from inheriting by its sub classes?

1350

Explain method overloading?

1019

What are the basics of core java?

1019

What is the implementation of destroy method in java. Is it native or java code?

965

What is subsequence of a string?

1100

What are strings in physics?

1015

What do you mean by buffering?

1045

What are access specifiers available in java?

1008

Can we modify the throws clause of the superclass method while overriding it in the subclass?

1036

What is the importance of main method in Java?

1057

Is upper case in java?

960

What is the basic concept of java?

1015

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