Java Related Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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Java Related Interview Questions

Questions Answers Views Company eMail

What does the jdbc connection interface?

998

What is the advantage of namedparameterjdbctemplate?

972

What does the jdbc databasemetadata interface?

991

Explain the role of driver in jdbc.

1014

Can we use string in the switch case?

1055

How hashset works internally in java?

1111

What is the role of the java.rmi.naming class?

1091

What are untrusted applets?

1161

Can you access non static variable in static context?

1061

Why java does not support pointers?

1052

What is the use of callablestatement?

1033

What is the importance of hashcode() and equals() methods?

1065

How do you print array in java?

1007

Why string objects are immutable in java?

1055

What an i/o filter?

1031

Un-Answered Questions { Java Related }

What is a rollback in jdbc?

954

When a thread is executing synchronized methods , then is it possible to execute other synchronized methods simultaneously by other threads?

1084

What is dbcontext and dbset?

427

Explain serialization and deserialization in java?

1015

What about features of local inner class?

1083

How many containers are there in spring?

544

What is log4j in java?

925

Write a program to reverse a number in java?

1107

What is difference between save and merge in hibernate?

547

What is difference between spring aop and aspectj?

428

how a programmer confirms that the data submitted has been succesfully inserted into the database(either oracle or my sql).. How a programmer confirm if there is any problem with the program he wrote for insertion... ANS:--- >executeupdate method is having boolean return type, if anything goes wrong in data insertion or data updation, it would return false. otherwise, if it successfully inserts data into the database, it would return true NOW HOW TO I CHECK IN MY DURING EXECUTION WHETHER IT RETURNS TRUE OR FALSE... WELL IT WILL DISPLAY ANY MESSAGE OR NOT

2444

How do we share data using 'getservletcontext ()?

1057

Is null in java?

1028

What is the use of connection factory in jms?

870

What is the use of EventMessage.java?

1501

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