Category Archives: Java

Java learned as so far:

Java variables,
Array, 2d array
Different method invoking and return type
Static keyword
Stack and heap memory
Garbage collection
Local variable
Reference variable
-Inheritance is the approach to get/transfer behaviour of one class to another
– Interface is a contract with a class. The class needs to implements that method of the interface according to contract
– one parent class
– Same method name with different purpose
Abstract class
– When you don’t need all methods to invoke you can use abstract method, you can not make object from abstract class abstract method needs to be in abstract class

Exception Handling

Lambda expressions

Static keyword java explanation

Some of the concepts learn from this video:


and this blog post

Java – Static Class, Block, Methods and Variables


This blog site can be seen for future references:

Head First Java Chapter 10 Notes

Java Programming Recap In Sha Allah

OOP concept clearings from some MOOC courses





Started My Java Revise and Python Learning

Need to revise everything.

Java vs C# Similarity

BigInteger in Java and C++


for c++ this link link or google search is good but i didn’t found any goood solution yet:


Simple addition:

BigInt Sum:



If will do about Java Certification later


Java Jobs

Java Developer

Precima 4.3 23 Reviews – Toronto

Job Description

About us

LoyaltyOne is part of the successful Alliance Data family of companies that provide the full range of data-driven loyalty, marketing and credit solutions in more than 80 locations across the globe.

Working with more than 100 leading brands in the retail, financial services, grocery, petroleum retail, travel and hospitality industries to profitably change customer behavior. Through a team of businesses, including one of the leading coalition loyalty programs in the world, the AIR MILES Reward Program, LoyaltyOne designs, delivers and manages a suite of services focused on consumer data, customer-centric retail strategies, direct-to-consumer marketing, loyalty consulting and more.

Furthermore, LoyaltyOne has broadened their horizons geographically by growing Precima in the European market. With the recent acquisition of BrandLoyalty in the Netherlands they have gained the expertise of a global leader in short-term loyalty campaigns, along with a client network that extends throughout Europe and Asia.

Precima applies shopper insights derived from advanced analytics to help retailers and manufacturers drive sales growth and boost profitability. Using comprehensive fact bases of purchase data, their team of experts help improve marketing and merchandising by identifying opportunities for growth and align both internal teams and external partners to best meet shoppers’ needs.

Precima tailors the scope and pace of its solutions to the unique priorities of each client. The overall goal is to achieve not just tactical wins but long term strategic gains, encouraging retailers to broaden the marketing agenda and fully explore the potential of sophisticated shopper insights.

Their roster of past and current clients includes many leading Fortune 1000 brands, among them some of the top high-frequency retailers in North America. Backed by first-hand experience with leading retail and manufacturing organizations, the Precima team brings a remarkable blend of expertise in loyalty, analytics, marketing and management to help you make more informed and profitable business decisions.

Learn more about Precima at

About the role
Come grow with Precima! We are looking for a Web Services developer who will help us to build the future for Precima’s embedded analytics platform. This is a highly technical position in an exciting new development area we will be introducing into our retail analytics business platform. We are looking for you to help implement our web platform. You will be a key team player and an integral part of our awesome web services team.
Who you are:
  • You bring a positive energy to the team and thrive on strong collaboration.
  • You are someone others look to for solving difficult problems, bounce ideas off and providing an alternate viewpoint.
  • You are self motivated and thrive on developing solutions to open-ended business problems.
  • You believe in developing great user experiences, through application flow and front end design.
  • Have 1-3 years of developing end to end web solutions
  • Have a Bachelor Degree in Computer Science, Computer Engineering, Electrical Engineering or other related discipline
Why we need you:
  • You will develop standard web solutions for industry leading interactive retail analytics
  • Participate in defining backlog and requirements clarification for various web projects
  • Help us to research and take advantage of new technology to improve and expand solutions
  • Leverage your previous experience to develop software solutions in support of business requirements and in accordance with predetermined software solution design standards
  • You are confident participating in an agile environment on design, development, testing and implementation of web solution components and modules
  • Troubleshoot and correct software defects
  • Participate in peer code reviews
What we use:
  • Java and corresponding development frameworks such as Spring
  • Bootstrap, LESS, SASS
  • Javascript – jQuery, Angular2, ReactJS, Node.js
  • Database experience (Relational) – MySQL, Oracle
  • Tomcat
  • Git
  • Atlassian tools – BitBucket/Stash, JIRA, Confluence, Bamboo
Nice to have:
  • Visualization library experience – D3.js, Google Charts, QlikSense
  • IIS
  • Cloud deployment experience; preference for Amazon Web Services stack
  • Big Data, Data Warehousing, In-Memory Database experience
Perks of our company:
  • High impact role with interesting challenges and huge growth potential!
  • Flexible hours and strong work life balance
  • Free Starbucks coffee and lattes, subsidized catered bistro café
  • On-site gym and massage therapy – great health and wellness benefits
  • Located directly above St. Patrick Subway station
  • One of the highest performing companies in the market (NYSE: ADS)
  • One of the 50 Best Employers in Canada – we value our employees!
Interested? Learn more about Precima at If you think you are ready to help us drive the web services team forward apply and we will review your resume!

Alliance Data is an Equal Employment Opportunity employer. Accordingly, we will make reasonable accommodations to respond to the needs of people with disabilities in accordance with legislation.

Alliance Data participates in E-Verify

JAVA/ J2EE Web Developer

A Leading Multinational Company

Job Description / Responsibility
  • Perform all phases of software engineering including requirements analysis,application design, code development and testing
  • Design and implement product features
  • Design reusable components, frameworks and libraries
  • Participate in an Agile / Scrum methodology to deliver high – quality software
  • Design and develop innovative solutions to meet the needs of the business
  • Review code and provide feedback relative to best practices and improving performance
  • Troubleshoot production support issues post deployment and come up with solutions as required
Job Nature


Educational Requirements
    Bachelor Degree or above in Computer Science/ Engineering/ MIS or relevant degree from reputed institution is required.
Experience Requirements
  • At least 3 year(s)
Job Requirements
  • Very good written and spoken english.
  • 3+ years of application development experience
  • Experience delivering web – based technology and Integration solutions to meet business needs
  • Hands on experience with Java/ J2EE, Spring, Hibernate, Apache, MySQL, GitHub, Java 8, Maven, HTML/CSS, Javascript/Jquery
Job Location


Salary Range
Job Source Online Job Posting

Job Summary

Published on: Mar 14, 2017

Job Nature: Full-time

Experience: At least 3 year(s)

Job Location: Dhaka

Salary Range: Negotiable

Application Deadline: Apr 13, 2017

Courses from Bdjobs Training

Pay online and get 10% discount

Send your CV to [email protected] or Click here to Email CV from MY BDJOBS account.
If you think, you are the right person for the job, please apply with complete resume at [email protected]

Applicant must enclose his/her Photograph with CV.

Application Deadline : Apr 13, 2017

Java Certification Experience

Java vs PHP developer as Career

First of all think that what do you want to do? A career or just a task? If you want to get money in your career choose java and spend years to stay in this field. But if you want quick earning money and complete projects in one or two days choose PHP. Never think that if something is hard and tricky then you must go to that way but think that what others are doing and where others are rushing to? – Arshad Hussain Dec 26 ’13 at 18:59

Data Mining:Intros and Weka With Java

Advanced string manipulation

Actually we use this method to split string from a big sentence using regex.

String Manipulation

Java OOP Examples

Triangular Number Java Code True or False

Here yo can see what is triangular number: