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

In method overloading ,if i change the return type to Long instead of INT,is the program execute

HCL,

6 12065

wat is class level lock and object level lock

HCL, Persistent,

3 22410

is it possible to add a object in a HASHMAP

HCL,

6 10057

why we cannot declare static variable inside a static method

4 10027

why using interface interface ?

1 2122

why use interface? if interface declear a method implement in class. why direct implement method in class

HCL,

1 2920

different between exception and error? explaim check and uncheck exception

4 7634

What is the difference between stateful and stateless session beans?

Tech Mahindra,

2 8411

Difference between interface and abstract class with ex.

Cognizant, Tech Mahindra,

4 9845

what is Thread priority?

Tech Mahindra, Wipro,

4 8333

Distinguish method overloading and overriding

Tech Mahindra,

2 5874

Distinguish method overloading and method overriding

Tech Mahindra,

4 7648

What is thread priority?

Tech Mahindra,

1 5873

how to search the pertical objects in a Collections

iGate,

3 6453

iam writing the contents to a excel through I/O i am putting first statement as WRITE and then READ(from excel) immediately..later user complains that he is not getting the date by using READ ..wat could be the situation

iGate,

3 5778

Un-Answered Questions { Java Related }

What is java string pool?

1076

What do you know about validation plugin ?

1024

What is action chaining ?

1158

What is the difference between filters and interceptors ?

1293

What is latest hibernate version?

485

Hi frnds how to lock an user when he enter wrong credentials more than 3 time using java or j2ee tech take username and password in a bean no need to connect DB and validate give me some sample application code or links its urgent for me thanks in advance

2415

What is a classloader in java?

1080

Can we return resultset in java?

985

what is reflection api? How are they implemented?

1098

What are the differences between heap and stack memory in java?

1123

Write a java program to find the route that connects between Red and Green Cells. General Rules for traversal 1. You can traverse from one cell to another vertically, horizontally or diagonally. 2. You cannot traverse through Black cells. 3. There should be only one Red and Green cell and at least one of each should be present. Otherwise the array is invalid. 4. You cannot revisit a cell that you have already traversed. 5. The maze need not be in the same as given in the above example

2657

What is the java api?

986

What do you understand by casting in java language? What are the types of casting?

923

explain different ways of using thread? : Java thread

1077

Write a program to find the whether a number is an Armstrong number or not?

1095

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