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 6605

Can we add default constructor to Servlet?

Fidelity,

1 6919

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

Fidelity,

3 15514

what is diff btwn JNDI&JDBC?

CTS, JPMorgan Chase,

6 27647

how to enable conection poole shrinking??

CTS,

2 10222

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

6 36769

how can connection with oracle10g with java

IonIdea,

3 12257

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

SparkTG,

3 9935

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

HP, SparkTG,

2 6405

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

HP, SparkTG,

2 8693

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

HP, SparkTG,

6 11210

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 7279

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

HP, SparkTG,

2 9023

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 10203

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

2 7696

Un-Answered Questions { Java Related }

What is statement and preparedstatement in java?

893

What is java instanceof operator?

1045

What is @controller annotation in spring?

447

What are the four pillars of java?

1211

How do I minimize the downtime while i’m updating the applications?

879

What is double parsedouble in java?

1051

Why is actionform a base class rather than an interface?

1066

What do you mean by boolean?

1063

How do you create message resource?

1013

How can I avoid validating a form before data is entered?

1003

What is qms certification?

955

What is an immutable object? How do you create one in java?

1065

What does orm mean?

404

Is the infobus client side only?

1114

what happen if we set JDBC string to NULL?

3396

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