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 marker interface ? what is the necessity of it?

Accenture, Newgen,

5 10933

what release of java technology are currently available what do they contain?

1 3862

what is the J2EE BluPrints?

2147

why Runnable interface is preferable than extending the Thread class?

Aizza, College School Exams Tests, Sybrant Technologies, Wipro,

7 27155

Interface A { String test(); } Interface B { int test(); } Create a class AB which must implements both A & B interfaces.

Hewitt,

17 24283

What is the need to declare main() method as static in Java?

12 22879

printstream class method println() is calling using System class and its static object out .how it is explain any one in detail with example ?

TCS,

1 5423

code to insert values/rows into oracle database from a java swing textfield when a button is pressed(using preparedstatements)

4435

whats the purposr of using serialization?

6 9776

how to one war file class to another war file class?

2095

suppose in a class there is a code like this: { Set hs=new Hashset(); hs.add(new Emp("kathy",1000)); hs.add(new Emp("kathy",2000)); } how can u avoid the above code in your class as set won't allow duplicate objects?

3 6671

what is meant by UP& DOWN casting in java?

6 14557

how can we import the user defined package without classpath?

CSC, Infosys,

1 7792

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

2617

For ease of programming you can consider the maze as a 2D array with colors represented by below integer and characters (in capital letters). • B - Black • W -White • G- Green • R- Red R B W B W W W W W W B W B B W W W W W W W B W B W W W B W W W W B B W W W B W W W B W W B B B B W B W B W W B W W W B W W W B B B W W B W W W B W W B W B W W W B W B W W W W B B W W W W B W W W W W G Shortest Route Problem: • Solution that finds the shortest Route between Red and Green  White will have 1 Weight.  Red and Green carry no weights.  Shortest path is the path with less weight when you add up the weights in the path.

2026

Un-Answered Questions { Java Related }

What is the difference between singleton and prototype scope in spring?

492

Which is more beneficial: CMP or BMP?

1066

What are the different types of ioc?

424

What is meant by lazy loading in hibernate?

420

What are the 3 levels of orm?

416

What is the spring ioc container?

413

What causes the "No suitable driver" error?

1084

How static variable work in java?

1151

What is anagram number?

972

How to run a JAR file through command prompt?

1306

What is spring batch admin?

412

What spring is in related to j2ee?

1056

What is the use of sessionfactory?

393

How can you add and remove nodes in jtree?

1065

Differences between C and Java?

1233

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