Concepts of Computer Science

How to build a project in eclipse with MAVEN build tool? Step 1:- Install maven and set the path in my computer. Once path is set for java and maven you will get a screen With version installed in your system. Step 2:- Write a command mvn archetype:generate to build a project of your choice.This will give you a option to select a project from list. Step 3:- As soon as this operation will complete maven give you choice to choose project.Search for maven-archetype-webapp this will build a web project with basic structure. Step4:- Follow the below procedure to give name , version ,package ,artifact and group id of your choice. Step 5:- You will get screen with build success.Congrats your project is build in directory. Step 6: Go in the directory to check for the folders automatically created by maven. You will get pom file and src folder and the package folder. Step:-7  Move to the directry having pom.xml and run mvn...

This error usually comes when we try to insert data in a query where there is no index defined for it. Example :- String strQuery=“select * from location where city_id=? ”; The question mark will be the the first index if we want to insert data so if we call a function like- oPreparedStatement = oConnection.prepareStatement(strQuery); oPreparedStatement.setString(1,235); here we are sending 235 as a first parameter so it will work fine but as soon as we write something after it like oPreparedStatement.setString(2,”kanpur”) then it will throw “The index 2 is out of range” since there is no place to send this value in a query hence it will throw the same error. Here index defines the parameter for which there is no place in the query. To rectify this we need to write query like- String strQuery=“select * from location where city_id=? And city_name=? ”; then it will work fine. The cases in which these errors can occur is- 1)Query is co...

1.   Java- This language turned 20 this year but still the popularity is never ending for it. The language mostly used in the big organization holding command over large enterprises application ruling over the business world. The language evolved itself in long theses 20 years to a great extent. There are frameworks like struts and springs also automatic built like maven and gradel that are giving  less headache to the coder and equally contributing role in the popularity of  it. This is also one of the high paying languages in the world. 2. Python- Python that has been changed a lot in last decade is ruling in the heart of all start-ups over the world. The speed through which it develops code in a less time is the reason for its popularity and is started getting a good share of percentage in the web development world. Often with Django framework and various libraries, it is becoming on of the favorite language for the programmers.  It is heavily used ...

this tutorial will tell you how to add existing project to your git hub account. Step1. Go to your GITHUB account. Create New repository  add repository Step2. Fill the required details. ( uncheck create read me ). Add details   Step 3. Open GIT shell from your desktop. Step 4. Go to the directory of your project using cd  “path of the project” Initialize git by using command   git init Add your files by using command   git add . Commit your files by command git commit –m ‘first commit’ commands to add git   STEP 5 Select your repository Add using command git remote add origin https://github.com/username/projectname.git Now push the project to git git push -u origin master push command