Set Java version: Learn to use Maven in your project

Maven is a commonly used Java project management tool that helps developers manage project dependencies and builds more easily. In the process of using Maven for project development, it is often necessary to set the Java version required by the project. This article will introduce how to set the Java version in a Maven project and provide specific code examples to help readers better understand and apply it.

First, we need to understand that the main way to set the Java version in a Maven project is by configuring the maven-compiler-plugin plugin. This plug-in can help us specify the version of the Java compiler to ensure that the project uses the correct Java version when compiling. Next, we will introduce how to configure the maven-compiler-plugin plugin in the pom.xml file of the Maven project to set the Java version.

First, we need to add the <plugins></plugins> subtag under the <build></build> tag and configure maven-compiler-plugin# in it ##Plug-in. The code example is as follows:

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.8.1</version>
            <configuration>
                <source>1.8</source> <!-- 指定源代码的Java版本 -->
                <target>1.8</target> <!-- 指定生成的class文件的Java版本 -->
            </configuration>
        </plugin>
    </plugins>
</build>

and <configuration> tag ; elements to specify the Java version required for the source code and generated class files. In this example, we set the Java version to 1.8, and readers can modify the version number according to the needs of the project.

maven-compiler-plugin plug-in in the pom.xml file, you can also specify the Java version through parameters in the Maven command line. For example, you can specify the Java version through the -Dmaven.compiler.source and -Dmaven.compiler.target parameters when executing the mvn compile command, as shown below:

mvn compile -Dmaven.compiler.source=1.8 -Dmaven.compiler.target=1.8

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