How to make thread safe servlet ?
I was asked this question once in an interview Is servlet thread safe ? Luckily they did not drilled much why and how ? I have documented h...Read More
Display matrix elements in a spiral order.
Problem : We have to display elements of matrix in spiral order. For the given matrix mat(4x4). In Output order of e...Read More
Reverse a string in java via Iterative and recursive approach.
This is very common interview question asked to warm up the interview session specially recursive approach . This problem can be solved in m...Read More
Binary tree traversal in Java - Preorder,Inorder,Postorder.
Tree traversal:- In order to process binary tree, the mechanism(different ways) of visiting nodes of tree is termed as tree traversal. Sinc...Read More
Servlet life cycle
If you are all set to attend an interview related to J2EE/Java Web application development then, it is recommended to brush up this importan...Read More
Run time complexity- Analysis of loops
Its' the very first thing one should understand before studying algorithm - what is running time complexity of block of code/How to find...Read More
Java puzzle -Set 1
Disclaimer : I do not claim that contents available here are my own , it's compiled by me after reading various pages on internet to ma...Read More
Create a matrix with alternating rectangles of O and X .
Problem : User will i nputs two numbers m and n and creates a matrix of size m x n (m rows and n columns) in which every elements is eithe...Read More
Java puzzle - Set 0
In java puzzle series,I am discussing interesting and intriguing concept of java. It will include some interview questions and MCQ. Dis...Read More
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