Compiling the Maven project with different JDK versions?

In this post, We will learn about Compiling the Maven project with different JDK versions?

Usually, by default, maven 2 supports JDK 1.4, and maven 3 uses JDK 1.5 to compile the project. Which is really too old. Maven comes with a Compiler Plugin, This compiler plugin helps maven to compile the project source code with a particular JDK version.

Solution

We may configure the plugin compiler directly in pom.xml (Tested with Maven 2 and 3)

pom.xml

<project>

  <build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.6.1</version>
            <configuration>
                <source>1.9</source>
                <target>1.9</target>
            </configuration>
        </plugin>
    </plugins>
  </build>

</project>

<build>

<groupId>org.apache.maven.plugins</groupId>

<artifactId>maven-compiler-plugin</artifactId>

</configuration>

</plugin>

</plugins>

</build>

</project>

Alternatively, We can configure the java version via the property values. (Tested with Maven 3)

pom.xml

<properties>
    <maven.compiler.target>1.6</maven.compiler.target>
    <maven.compiler.source>1.6</maven.compiler.source>
</properties>

<maven.compiler.target>1.6</maven.compiler.target>

<maven.compiler.source>1.6</maven.compiler.source>

</properties>

That’s all about Compiling the Maven project with different JDK versions?

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