Skip to main content

How to build a project in eclipse with MAVEN build tool?

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 eclipse:eclipse command to convert the project into eclipse.





You will get a screen of successful completion of project.

Step 9:- Open eclipse and import the same project into eclipse.

Step 10:- The following structure you will get after import will be successful.
Change you directory in command prompt from normal directory and go to the same project in eclipse workspace.


Now right click on project go to configure and select convert to maven.


 You will get an error don’t panic follow next steps.



This is a maven bug in eclipse first clean the project using command mvn eclipse :clean then again convert it to mvn eclipse:eclipse project.After completing the steps again convert to maven by selecting the same option.This  time you will be able to convert the project.

The below folder you will get as the final basic structure.


Comments

.

Popular posts from this blog

Basics of System Design

This article is first one from the series of articles dedicated to system design interviews. Here i am going to present the base scenario to consider before starting to solve system design problems.
Questions to ask?
1) what is the number of requests a website will recieve in a day/month/second? 2) what is the amount of memory a website will deal in a day/month/second? 3) what is the number of servers that can accomodate these requests?
To answer this , first we need to remember the below numbers:-
1 million = 10 lakh = 1000000 = 10^6 1 billion = 1000 million = 10^9
1 KB = 1024 B = 10^31 MB= 10^6 = 1024 KB 1 GB= 10^9 = 1024 MB1 TB = 10^12 = 1024 GB
Memory we need to see in BytesRequests we need to see in numbers
example :-
suppose a website recieves 100M requests every month then:-
requests per day = request per month /24 = 416700 requests requests per second = requests per day / (24*3600) = 4.8 requests per second
memory:-
if we take 20:80 principal where 20 percent is write and 80 percent is …

Calculating size of User and Cache storage

user storage:-
it can be solved using same scenario as mentioned in first article .

https://tech.nazarmubeenworks.com/2019/08/basics-of-system-design-chapter-0.html


Suppose there are 12 Million of users are adding every year meaning 1 Million per month.
So if we consider 5 year there will be around 60 million of users. Now in terms of data we can look to our DB table and get information about it. A user will be generally having name , id , address , some forien keys .
Lets assume 10 columns with each column on an average storing 4 byte of data.
10*4 = 40 bytes of data for one user.
60 * 10^6 * 40 = 2400 * 10^6 = 2.4 * 10^9 = 2.4 GB of data we need to store only user values.
Also while calculating storage for the user there is also one important point we need to remember is of ids. If we are going to have 60 Million of users which means 60*10^6 users so unique id’s will be
as we know below figures are almost equal
2^10=10^3 then 60*(10^3)^2 = 2^20 *2^6
which means we almost need 26 …