Java Related Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Java J2EE (14736)
J2ME (151)
Java Related AllOther (507)

Java Related Interview Questions

Questions Answers Views Company eMail

Explain the selection sort algorithm and state its time complexity?

Flextronics,

1015

Give me an example of array and linked list? Where they can be used?

Ericsson,

1010

What is meant by 'bit masking' in java?

DELL,

1188

If we allocate the memory using 'new' & de-allocated using 'free' then what will happen?

CDAC,

1042

What is an interoperable application in java ?

HCL,

1001

These static constructors are correct ? class A { statc intA() { } static A(int x,int y) { } static A(int x) { } }

HCL,

1087

What is the difference between Error, defect,fault, failure and mistake?

HCL,

1205

What are assertions in java?

Impetus,

1 2153

How are java objects passed to a method and what are native methods?

Genpact,

1081

What is scope & storage allocation of global and extern variables? Explain with an example

IBS,

1042

Explain with example the concept of constant variable in java.

HCL,

1180

what is the purpose of "virtual"?

EDS,

1085

What is the reason behind using constructors and destructors?

HCL,

1062

Detail discussions on JVM, memory management and garbage collector.

Expedia,

985

How can we make a class virtual?

Fidelity,

1114

Un-Answered Questions { Java Related }

Can we declare array without size in java?

1039

What is a lambda expression ? What's its use ?

1107

Difference between session and sessionfactory in hibernate?

436

What’s the difference between sendredirect and forward methods

1062

What is dao layer in spring boot? : Spring Boot

406

What is the difference between jpql and hql?

367

What do you understand by a thin client?

987

What is variable argument in java?

1004

We have some issue with our application server and we tried killing it using kill-9 command, the process disappeared for few seconds but it is back again. We did not start the server but it started. What would be the reason?

988

What are workflows?

824

What is a thin client?

1033

Why scanner is used in java?

1073

What is hibernate dialect for oracle?

486

What is map and flatmap?

1020

Why the container loads server at the application startup and how?

1064

For More Un-Answered { Java Related } Questions Click Here