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

What is aggregation and composition ?

Fidelity,

1 6722

Can we add default constructor to Servlet?

Fidelity,

1 7035

How do u pass data from one jsp to another jsp?

Fidelity,

3 15687

what is diff btwn JNDI&JDBC?

CTS, JPMorgan Chase,

6 28004

how to enable conection poole shrinking??

CTS,

2 10415

what is the meaning of java.lang and java.util

6 37066

how can connection with oracle10g with java

IonIdea,

3 12501

if a java file without any source code is valid java file?

SparkTG,

3 10147

why string is not taking as primitive datatypes but we r taking it as a class? why explain it?

HP, SparkTG,

2 6549

What is the difference between the synchronized() & static synchronized()?

HP, SparkTG,

2 8874

which one is more efficient int x; 1. if(x==null) 2.if(null==x) state which one either 1 or 2?

HP, SparkTG,

7 11499

how tha garbage collector know that the object will be deleted? on which algorithm the garbage collector works? what is the working principle of garbage collector? How manay types of garbage collectors r there?

HP, SparkTG,

1 7415

what is object type casting? give some example with related?

HP, SparkTG,

2 9166

suppose we have an interface & that interface contains five methods. if a class implements that interface then we have to bound that to give tha definition of all five methods in that class. If we declare that class as abstract then can we call only two methods to give the deinition of that method & i don't want to give the definition of all the methods? can it possible

HP, Wipro,

6 10490

What is connection pooling? What Method and class used for Connection pooling in Java?

2 7822

Un-Answered Questions { Java Related }

What is parsing in java?

1024

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

1120

How to create a base64 decoder in java8?

1128

What do you mean by an interface in java?

1095

What is difference between @controller and @restcontroller in spring?

533

How does java handle integer overflows and underflows?

1107

What is lazy class?

478

Differentiate between static and non-static methods in java.

1115

What is the difference between break and continue statements?

1116

what is reflection api? How are they implemented?

1098

How to sort array in descending order in java?

982

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

923

explain different ways of using thread? : Java thread

1075

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

2413

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

1032

For More Un-Answered { Java Related } Questions Click Here