add repo config in pom

gistfile1.txt

<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-app</artifactId>
    <version>1.0-SNAPSHOT</version>

    <!-- Add repositories for dependencies -->
    <repositories>
        <repository>
            <id>central</id>
            <url>https://repo.maven.apache.org/maven2</url>
        </repository>
        <repository>
            <id>my-custom-repo</id>
            <url>https://example.com/maven-repo</url>
        </repository>
    </repositories>

    <!-- Add repositories for plugins -->
    <pluginRepositories>
        <pluginRepository>
            <id>central-plugins</id>
            <url>https://repo.maven.apache.org/maven2</url>
        </pluginRepository>
        <pluginRepository>
            <id>my-custom-plugin-repo</id>
            <url>https://example.com/maven-plugins</url>
        </pluginRepository>
    </pluginRepositories>
</project>

gistfile2.txt

<build>
  <plugins>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-compiler-plugin</artifactId>
      <version>3.8.1</version>
      <configuration>
        <!-- If JDK 9 or above -->
        <release>11</release>
        <!-- Or for older JDK versions -->
        <source>1.8</source>
        <target>1.8</target>
      </configuration>
    </plugin>
  </plugins>
</build>

maven-jar-plugin

<build>
  <plugins>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-jar-plugin</artifactId>
      <version>3.2.0</version>
      <configuration>
        <archive>
          <manifestEntries>
            <Implementation-Version>${artifactVersion}</Implementation-Version>
          </manifestEntries>
        </archive>
      </configuration>
    </plugin>
  </plugins>
</build>