Java J2EE Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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Java J2EE Interview Questions

Questions Answers Views Company eMail

What are Interceptors?

1 5903

i would like to attend for an interview of datalab technologies company i want to know the pattern of imnterview.

2459

Suppose i have two threads t1 and t2 are running.How the main thread will know that the two threads t1,t2 execution has completed?

Subex,

2 12839

i am user who logined the application..after that another valid user will also logind..so that is it neccessary to create jdbc connection for each and every user...plz explain it with proper answer...plz help me

IBM,

5 9790

I have a string like _a01_a02_a03_ and another string like _2_1.5_4_ as input.I want to extract a01,a02... to a string array and 2,1.5,etc to a double array with a01 corresponds to 2 and a02 to 1.5 etc. Need code in core java.. Can you do it?

Cognizant,

1 4437

write a program that list all permutations of ABCDEF in which A appears before B?

Nissan,

1 2543

what is the difference between System.out.println and out.println in java

CTS,

10 30245

why an outer class cannot be declared as private?

2 4412

how to create Calculator GUI using Gridbaglayout as like as Window Calculator??????????? (Open calculator Go-->Run-->type calc-->Enter)

TCS,

1 10239

how java is os independent language ?

3 5673

What is abstraction with strong example program? (not a general program)

3 6683

Why Java is called as purely platform independent..? Explain briefly..dont Give regular answers Explain with your own example..?

Nokia,

8 33343

Can any one say how will sort map objects in java?

TCS,

2 5323

How can u create the Object of class Without using "New" opertor?

IBM, TCS,

3 8666

How can two threads be made to communicate with each other?

HCL,

3 9064

Un-Answered Questions { Java J2EE }

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

1121

What do you mean by an interface in java?

1093

How to create a base64 decoder in java8?

1124

What is the difference between equals() and == in java?

1030

Write a program to print count of empty strings in java 8?

1077

Differentiate between static and non-static methods in java.

1115

Explain public static void main(string args[]) in java.

1061

What is the difference between filters and interceptors ?

1293

What is java string pool?

1072

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126

What are the contents on web.xml in struts application ?

1057

How is declarative handling of exceptions done in struts ?

999

Can we return resultset in java?

985

What is an object in java and how is it created?

1120

How to sort array in descending order in java?

981

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