Create a project in Java using Apache Maven Build tool via Command Line and use GitHub Actions to build it on remote Docker Engine.
JavaMIT
Apache Maven (Command Line)
Creating a Simple Java Project name: mvn-cmd 😄
Step 1: Create the java project
Syntax: mvn archetype:generate -DgroupId=com.mycompany.app -DartifactId=my-app -DarchetypeArtifactId=maven-archetype-quickstart -DarchetypeVersion=1.4 -DinteractiveMode=false
Explanation: For beginners,
Only two things are of concern:
1) Group ID: This will be our package name.
2) Artifact ID: This is our project name (mvn-cmd)
Step 2: Check the Directory Structure of created project
At the source folder of the project:
1) src/
It contains two folders:
1.1) main/
It is used to create codes in java
1.2) test/
It is used to create JUnit Test cases
2) pom.xml
Pom.xml is the mail build file of the maven!
Step 3: Change the source code (and file name) as you want to make
Go to /src/main/java/pkg1
NOTE: pkg1 is the package name we defined while creating the project.
Always include package name in the code.
Modify the app.java file
Rename to the file name you want.
Step 4: Clean the project area
Syntax: mvn clean
Before start building a project, it is necessary to delete old configuration files.
mvn clean command is used to delete the target/ folder.
Step 5: Compile the Project source code
Syntax: mvn compile
This command is used to check whether the source code we wrote in java file is correct syntactically or not.
Step 6: Unit Testing
Syntax: mvn test
This work is tricky.
You must know how to create JUnit Test cases.
You need to define the Unit Test cases in /src/test/pkg1
Step 7: Install (Build the Project)
Checks the Maven Configuration in pom.xml file
Creates the project build.
Creates jar file in target/ folder which can be deployed
Step 8: Site
Syntax: mvn site
Maven Site command is used to create GUI reports
It creates reports in format of web pages in HTML+CSS format.
Site Reports are stored in /target/site
