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

What is hash code collision?

1 1137

What do you mean by order of precedence and associativity?

1 1017

What is the common usage of serialization? What exceptions occur during serialization?

1 1230

Which way a developer should use for creating thread, i.e. Sub classing thread or implementing runnable.

1 1010

What are the different ways of creating thread?

1 1095

What will happen if non-synchronized method calls a static synchronized method and what kind of lock it acquires?

1 1255

What is the use of volatile in java?

1 1138

Mention the default values of all the elements of an array defined as an instance variable.

1 1070

What are the steps in the jdbc connection?

1 1122

Why singleton pattern is better than creating singleton class with static instance?

1 1074

Write a code to create a trigger to call a stored procedure

1 1066

What is the difference between preparedstatement and statement in java?

1 1277

What is the difference between synchronized and synchronized block?

1 1138

What is the use of join method?

1 1118

What do you understand by weak reference?

1 1088

Un-Answered Questions { Java J2EE }

How is declarative handling of exceptions done in struts ?

1001

explain different ways of using thread? : Java thread

1079

Differentiate between static and non-static methods in java.

1118

hi actully i hav form columns with origin and destination names .as like as i need to create one more column with name amount. my requirement is when i select origin and destination columns automatically i need to get amount from database.how can i. please tel me with relative code

2866

What do you mean by an interface in java?

1095

What is a classloader in java?

1086

How to sort array in descending order in java?

989

Write a program to find the whether a number is an Armstrong number or not?

1095

What is the difference between filters and interceptors ?

1305

How to create a base64 decoder in java8?

1133

Can we return resultset in java?

990

What is a constructor overloading in java?

1123

Write a java program to find the route that connects between Red and Green Cells. General Rules for traversal 1. You can traverse from one cell to another vertically, horizontally or diagonally. 2. You cannot traverse through Black cells. 3. There should be only one Red and Green cell and at least one of each should be present. Otherwise the array is invalid. 4. You cannot revisit a cell that you have already traversed. 5. The maze need not be in the same as given in the above example

2659

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

2417

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

541

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