How to properly specify jcenter repository in maven config?

Just add a repositories section in your pom:

<repositories>
    <repository>
        <id>jcenter</id>
        <name>jcenter</name>
        <url>https://jcenter.bintray.com</url>
    </repository>
</repositories>

You have to define settings.xml like the following. If you define it in ~/.m2/settings.xml it will be global to your maven. If you define it as a resource of your project you can bind it with the -s parameter:

mvn -s settings.xml compile

<?xml version="1.0" encoding="UTF-8" ?>
<settings xsi:schemaLocation='http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd'
          xmlns='http://maven.apache.org/SETTINGS/1.0.0' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
    
    <profiles>
        <profile>
            <repositories>
                <repository>
                    <snapshots>
                        <enabled>false</enabled>
                    </snapshots>
                    <id>central</id>
                    <name>bintray</name>
                    <url>https://jcenter.bintray.com</url>
                </repository>
            </repositories>
            <pluginRepositories>
                <pluginRepository>
                    <snapshots>
                        <enabled>false</enabled>
                    </snapshots>
                    <id>central</id>
                    <name>bintray-plugins</name>
                    <url>https://jcenter.bintray.com</url>
                </pluginRepository>
            </pluginRepositories>
            <id>bintray</id>
        </profile>
    </profiles>
    <activeProfiles>
        <activeProfile>bintray</activeProfile>
    </activeProfiles>
</settings>

The official documentation from JFrog JCenter is in: https://bintray.com/bintray/jcenter

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