Using more than one language in your JAVA application

What is the best way to add more than one language to a JAVA application?
I have added in my project language tool dependencies in Maven pom.xml file, but when I try to add the same dependency again by just the change of language it gives me an error. Have someone done it before wherein the project they have used languagetool for more than one language?

the maven dependency looks like this;

        <dependency>
            <groupId>org.languagetool</groupId>
            <artifactId>language-en</artifactId>
            <version>5.3</version>
        </dependency>

and I want to add in also a language artifact with >language-de<