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

How to make a class immutable?

15 30747

If we close the browser,when the specific user session is active.Again if we open browse how to retrive it same user??what code i have to da???

TCS,

5 12517

What is a constructor?

4 6075

What is the difference between Abstract Class and Interface

Amdocs,

8 15820

In HashTable I am storing null value..then what is the error it will show

GM General Motors,

2 12243

In web.xml file instead of *.do can i write *.ibm, Specify with example

IBM,

13 23332

How many ways to remove the session object in the container

Bosch,

6 18278

How to perform Singleton of the java class object on multi JVM?

2 12626

How to send a request to garbage collector?

4 8308

while working struts in intellij 7.0error unable to initialize tld location cache: zip file is closed is displayed anybdy can answer me immdialy .ungert

Banking,

2574

when i run Frame program, it display output in supparate window.i try to close using "X" it not close.min'-' & max'+' are working.pls what is problem? i run in editplus. folowing program i given. import java.awt.*; class Form1 { Frame f1=new Frame("loginpage"); Label l1=new Label("username"); Label l2=new Label("password"); TextField tf1=new TextField(); TextField tf2=new TextField(); Button b1=new Button("submit"); Form1() { f1.setLayout(new FlowLayout()); f1.add(l1); f1.add(tf1); f1.add(l2); f1.add(tf2); f1.add(b1); f1.setSize(437,440); f1.setVisible(true); //f1.dispose(); } public static void main(String[] args) { Form1 f=new Form1(); } }

4 9255

java.lang.IllegalArgumentException: The path of an ForwardConfig cannot be null while working with struts it displayed pls very ungent

IBM,

3 21978

What happens when database down in weblogic

HCL,

8 24619

What is the use of RequestDispatcher in servlet?

Accenture, CTS, TCS,

18 55998

How can you say HashMap is syncronized?

Arete, IBM,

14 21096

Un-Answered Questions { Java Related }

Can we assign the reference to this variable?

997

How to instantiate member inner class?

1106

Can I map more than one table in a cmp?

1103

What are the two important tcp socket classes?

1117

Can the messaging bridge handle two-phase or global transactions between separate weblogic server domains or between different releases? : BEA Weblogic

1029

What is hibernate generator class?

447

How we can install struts?

1011

What is aop in spring javatpoint?

504

What is the purpose of xmlaccess configuration file export.xml & exportrelease.xml?

945

What are beans in java spring?

442

In our urls and in the text of the buttons we have comma. Its causing an error. Is there a way to change the delimiting character for the menu arguments?

1197

When do we use execute method in java jdbc?

1001

What are classes for spring jdbc api?

575

Define canvas?

998

To identify IDL language what mapping mechanism is used?

3959

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