Easily master the steps to install Maven on your Mac computer

Teach you step by step how to install Maven on a Mac computer. The operation is simple and easy to learn. Specific code examples are required

Maven is a tool for project construction, dependency management and release Deployment tools. It can help developers manage various dependencies and version conflicts in projects more efficiently.
This article will introduce you in detail how to install Maven on a Mac computer, and provide specific code examples to make it easy for you to get started.

Step One: Download Maven
First, we need to download the latest version of Maven from the Apache Maven official website (https://maven.apache.org). Find the "Download" menu in the Quick Navigation bar on the homepage, and then click the "Download Apache Maven" button. Select a stable version in the pop-up page to download.

Step 2: Decompress the Maven compressed package
After the download is completed, find the downloaded Maven compressed package and decompress it to the appropriate location. On Mac computers, we recommend extracting it to the "/usr/local/" directory to facilitate subsequent configuration operations.

Open the terminal and enter the following command to decompress:

cd /usr/local/
sudo tar -xf /path/to/apache-maven-3.x.x.tar.gz

Note that replace /path/to/apache-maven-3.x.x.tar.gz with your actual Path to the downloaded Maven compressed package.

Step 3: Configure environment variables
After Maven is installed, we need to configure some environment variables so that Maven commands can be used conveniently in the terminal.

Open the terminal and enter the following command:

cd ~
vim .bash_profile

Here the user's .bash_profile file is opened using the vim editor. If you are familiar with other text editors, you can also Open with another editor.

In the .bash_profile file, add the following:

export M2_HOME=/usr/local/apache-maven-3.x.x
export PATH=$PATH:$M2_HOME/bin

Replace /usr/local/apache-maven-3.x.x with The path to the Maven directory you actually unzipped.

Save the file and exit the editor.

Then enter the following command in the terminal to make the configuration take effect:

source .bash_profile

Step 4: Verify the installation result
Enter the following command to verify whether Maven is installed successfully:

mvn -v

If the installation is successful, you will see output similar to the following information:

Apache Maven 3.x.x (...)

After the installation is successful, you can use Maven to build your project.

Now, let us demonstrate the use of Maven through a specific code example.

Suppose you have a Java project with the following project structure:

my-project/
    |- src/
        |- main/
            |- java/
                |- com/
                    |- example/
                        |- App.java
            |- resources/
        |- test/
            |- java/
            |- resources/
    |- pom.xml

Next, we will build, compile and run the project through Maven.

In the project root directory, create a file named pom.xml and add the following content:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    
    <modelVersion>4.0.0</modelVersion>
    
    <groupId>com.example</groupId>
    <artifactId>my-project</artifactId>
    <version>1.0.0</version>
    
    <properties>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>
    
    <build>
        <sourceDirectory>src/main/java</sourceDirectory>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
            </resource>
        </resources>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.0</version>
                <configuration>
                    <source>${maven.compiler.source}</source>
                    <target>${maven.compiler.target}</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

Save pom.xml document.

Next, enter the project root directory in the terminal and execute the following commands to compile and run the project:

mvn clean package
java -cp target/my-project-1.0.0.jar com.example.App

In this way, you will successfully use Maven to build and run this Java project!

Summary:
Through the above steps, you have now successfully installed Maven on your Mac computer, and demonstrated the basic use of Maven through a specific code example. I hope this article will be helpful to you and make it easier for you to use Maven to manage and build your projects. I wish you a happy use!

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