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

Write an sql to find all records having all numeric characters in a field ?

1 1046

Explain the difference between inner and outer join ?

1 1118

What are temp tables ?

1 1033

What is database deadlock ?

1 1312

What should be done for auto generating primary key id in a table ?

1 1026

Can we have foreign key reference to a non primary key column ?

1 1042

What's the benefit for specifying constraints like not null, primary key explicitly instead of specifying it against the column ?

1 1030

If you are given a choice to implement the code to either insert a record or update if already exist, which approach will you follow ?

1 1064

What is database deadlock ? How can we avoid them?

1 1147

Describe the steps needed to execute a sql query using jdbc.

1 1038

Which constraint cannot be specified as an explicit constraint and should be specified with the column only ?

1 992

What is jdbc? Describe the steps needed to execute a sql query using jdbc.

1 998

Does sql allow null values ?

1 1038

Write an sql to find all records having all upper case alphanumeric characters in a field ?

1 1011

What are the different class loaders used by jvm?

1 1158

Un-Answered Questions { Java Related }

Can we extract main method from another class?

1017

What is the locale class?

1009

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

2649

How to sort array in descending order in java?

976

What is a classloader in java?

1072

What is the resourcebundle class?

994

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

520

How can you inject java collection in spring?

493

What is the java api?

973

What is action chaining ?

1148

Realized?

2239

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

2409

What is latest hibernate version?

465

What do you know about validation plugin ?

1009

What if I write static public void instead of public static void?

922

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