Maven Builds Java Projects

Maven uses the archetype plugin to create projects. To create a simple Java application, we will use the maven-archetype-quickstart plugin.

In the following example, we will create a Maven-based Java application project under the C:\MVN folder.

The command format is as follows:

mvn archetype:generate "-DgroupId=com.companyname.bank" "-DartifactId=consumerBanking" "-DarchetypeArtifactId=maven-archetype-quickstart" "-DinteractiveMode=false"

Parameter explanations:

• -DgroupId: Organization name, reverse of the company's website URL + project name
• -DartifactId: Project name-module name
• -DarchetypeArtifactId: Specifies the ArchetypeId, maven-archetype-quickstart, to create a simple Java application
• -DinteractiveMode: Whether to use interactive mode

The generated folder structure is as follows:

In the C:\MVN\consumerBanking\src\main\java\com\companyname\bank folder, you can see an App.java, with the following code:

App.java

package com.companyname.bank;

/**
 * Hello world!
 *
 */
public class App 
{
    public static void main( String[] args )
    {
        System.out.println( "Hello World!" );
    }
}

Open the C:\MVN\consumerBanking\src\test\java\com\companyname\bank folder to see the Java test file AppTest.java.

AppTest.java

package com.companyname.bank;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

/**
 * Unit test for simple App.
 */
public class AppTest extends TestCase 
{
    /**
     * Create the test case
     *
     * @param testName name of the test case
     */
    public AppTest( String testName )
    {
        super( testName );
    }

    /**
     * @return the suite of tests being tested
     */
    public static Test suite()
    {
        return new TestSuite( AppTest.class );
    }

    /**
     * Rigorous Test :-)
     */
    public void testApp()
    {
        assertTrue( true );
    }
}

In subsequent development, we only need to place the files according to the structure mentioned in the table above, and Maven will handle the rest for us.