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 31333

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 12759

What is a constructor?

4 6267

What is the difference between Abstract Class and Interface

Amdocs,

8 16128

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

GM General Motors,

2 12359

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

IBM,

13 23796

How many ways to remove the session object in the container

Bosch,

6 18570

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

2 12750

How to send a request to garbage collector?

4 8498

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,

1 2631

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 9430

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

IBM,

3 22188

What happens when database down in weblogic

HCL,

8 24889

What is the use of RequestDispatcher in servlet?

Accenture, CTS, TCS,

18 56536

How can you say HashMap is syncronized?

Arete, IBM,

14 21733

Un-Answered Questions { Java Related }

What is the resourcebundle class?

1010

What if I write static public void instead of public static void?

932

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

2419

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

1035

How can you inject java collection in spring?

507

What is the difference between break and continue statements?

1121

Can we extract main method from another class?

1034

What is parsing in java?

1036

Is minecraft 1.15 out?

1043

what are the different modes of archival? Explain each mode in two lines each?

996

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

1095

What is java string pool?

1078

What is the difference between filters and interceptors ?

1308

What is the first argument of the string array in main method?

1030

What do you mean by an interface in java?

1097

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