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

all are saying java doesn't support multiple inheritance but by default Object class is super class for all the user defined classes and we can extend atmost one class so each class can extend more than one class so java supports multiple inheritance?i am confused with this,pls any one explain me.

CFG,

8 9344

what are the gbx,gdb and other tools in linux for core dump,and how to configure stdout,stderr..what is the difference between stdout ,stderr and coredump. how to create core dump and view that one? please can anybody explain me?

4716

how to know which version of java is running on ur computer using command prompt?

BeBo Technologies,

2 7508

What is there in browser that it supports web based applications of java or any other PL?

2 4415

what is class.forname() and how it will be useful ?

3 5891

how and when compiler knows that the Java code throws the checked Exception.

HSBC,

2 12721

how can we connect to db without using getConnection() method

4 7668

diff. b/w JAVA and javascript...

NIIT,

3 6692

Weblogic admin don't know the admin credentials of weblogic 8.1 UI..how can he get the credentials?

IBM,

2 13503

what is the difference between String s="hello"; and String s=new String("hello");?

3 13783

hi to all,i have a question on static block. i saved below as test.java class test extends a { static { System.out.println("test static"); } public static void main(String []dfs) { } } class a { static { System.out.println("a static"); } public static void main(String []asdf) { } } o/p as static test static but if i change base class as test class then class test { static { System.out.println("test static"); } public static void main(String []dfs) { } } class a extends test { static { System.out.println("a static"); } public static void main(String []asdf) { } } o/p test static explain me why "a static" wasn't print in second code when it is in derived class

1 3600

what are the uses of Class class and what it returns? explain it with the example code.

1 3798

class test { private static void main(String []adsf) { } } explain me that the above code is error or exception

3 5535

class a extends b { } class b extends a { } why java doesn't support cyclic pls explain me with example

Wipro,

3 9922

how to create a jar file in java

1 5111

Un-Answered Questions { Java J2EE }

What is public/private protected in java?

1041

What is spring java based configuration?

442

J2ee is a container centric architecture. Explain.

917

What is package private scope in java?

942

What is the different between get and post?

974

How an object is serialized in java?

988

Can we able to pass objects as an arguments in java?

1022

What is finalize() function in java?

1012

Why we should not make entity class final?

398

What is the use of spring data?

420

Does spring boot need web xml? : Spring Boot

436

How many functional interfaces does java 8 have?

1027

What is database deadlock ?

1187

Explain what is encapsulation?

1081

What is the preferred size of a component in java?

876

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