By using maven we can separate loading of .properties file by based on environments like(Dev,Production,Testing)

In Maven we can use <profiles> tag to separate different environments.

<profiles>
        <profile>
            <id>dev</id>
            <activation>
                <activeByDefault>true</activeByDefault>
            </activation>
            <properties>
                <build.profile.id>dev</build.profile.id>
            </properties>
        </profile>
        <profile>
            <id>prod</id>
            <properties>
                <build.profile.id>prod</build.profile.id>
            </properties>
        </profile>
    </profiles>


<build>
         <filters>
            <filter>profiles/${build.profile.id}/config.properties</filter>
        </filters>
        <resources>
            <resource>
                <filtering>true</filtering>
                <directory>src/main/resources</directory>
            </resource>
        </resources>
</build>

The goal we have to use to run this profile 

mvn package -P prod