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

What is Mutex (Mutual Exclusion Object) ?

Ciena,

1152

Give differences between Quicksort &Mergesort. When should these sorts be used andwhat is their running time in java?

Genpact,

1243

What do you mean by JVM?

Ericsson,

1081

When does a class need a virtual destructor?

Flextronics,

1016

How is tree Mirroring implemented?

Fidelity,

1081

How can u increase the heap size in the memory?

Infosys,

1020

What do you understand by abstract classes?

HCL,

1075

How do you implement tree mirroring in java?

EXL, HCL,

1079

Explain the key functions of data binding?

Akamai Technologies, Aspire, Impetus, Infogain, Tavant Technologies, Virtusa,

1021

What is Major and importance difference between for and foreach loop ?

Infosys,

1154

What is the use of generics? When was it added to the Java development Kit?

Impetus,

1021

Explain the difference between a Thread and a Process.

Ciena,

1000

How many JVMs can run on a single machine and what is the Just-In-Time(JIT) compiler?

Global Logic,

1058

Does java support multiple inheritance or not?

Hexaware,

1106

How can you read content from file in java?

HCL,

1006

Un-Answered Questions { Java Related }

What is application context?

444

What is difference between local variable and global variable?

1023

Write a java program for binary search?

1070

What are the differences between setmaxrows(int) and setfetchsize(int)?

1065

Java is Pass by Value or Pass by Reference?

1045

What is odbc and jdbc drivers?

956

What is the nested interface?

1108

What is use of inner class in java?

1152

Define max and min heap, also the search time of heap.

1028

How do you create a null object?

1087

Explain the hierarchy of java exception classes?

1107

What is aspect oriented programming (aop)?

542

What are the basic and subtypes of enterprise java beans (ejb)?

1056

What is application client module?

991

How to run a JAR file through command prompt?

1281

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