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 6918

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

Fidelity,

3 15507

what is diff btwn JNDI&JDBC?

CTS, JPMorgan Chase,

6 27644

how to enable conection poole shrinking??

CTS,

2 10220

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

6 36765

how can connection with oracle10g with java

IonIdea,

3 12254

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

SparkTG,

3 9934

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 8689

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 11205

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 7275

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

HP, SparkTG,

2 9021

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 10199

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

2 7696

Un-Answered Questions { Java Related }

What are the features of java?

1083

What are the design considerations while making a choice between using interface and abstract class?

1094

Why is java more secure?

930

Which is better openjdk or oracle jdk?

894

What is constructor chaining in java?

1062

How to create com object in Java?

1076

Why wait(),notify(),notifyAll() methods defined in Object class althought we are using in only threads.

2820

Explain the diffrernces between 8.x and 9.x?

1013

What are the advantages of using spring boot? : Spring Boot

468

Can hibernate be used with mongodb?

342

Explain the concept of auto wiring.

432

What is java api for xml processing (jaxp)?

972

What do you understand by the term polymorphism?

1080

how to prepare for IT Officers Interview in Banks

1972

Difference between save() and saveorupdate() method of hibernate?

448

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