TT4J - TreeTagger for Java

TreeTagger for Java is a Java wrapper around the popular TreeTagger package by Helmut Schmid. It was written with a focus on platform-independence and easy integration into applications. It is written in Java 5 and has been tested on OS X, Ubuntu Linux, and Windows.

News

15 Mar 2015 »Moved to GitHub
19 Nov 2014 »TT4J 1.2.1 released

Code example

package org.annolab.tt4j;

import static java.util.Arrays.asList;

public class Example {
  public static void main(String[] args) throws Exception {
    // Point TT4J to the TreeTagger installation directory. The executable is expected
    // in the "bin" subdirectory - in this example at "/opt/treetagger/bin/tree-tagger"
    System.setProperty("treetagger.home", "/opt/treetagger");
    TreeTaggerWrapper tt = new TreeTaggerWrapper<String>();
    try {
      tt.setModel("/opt/treetagger/models/english.par:iso8859-1");
      tt.setHandler(new TokenHandler<String>() {
        public void token(String token, String pos, String lemma) {
          System.out.println(token + "\t" + pos + "\t" + lemma);
        }
      });
      tt.process(asList(new String[] { "This", "is", "a", "test", "." }));
    }
    finally {
      tt.destroy();
    }
  }
}

before Java 8

package org.annolab.tt4j;

import static java.util.Arrays.asList;

public class Example {
  public static void main(String[] args) throws Exception {
    // Point TT4J to the TreeTagger installation directory. The executable is expected
    // in the "bin" subdirectory - in this example at "/opt/treetagger/bin/tree-tagger"
    System.setProperty("treetagger.home", "/opt/treetagger");
    TreeTaggerWrapper tt = new TreeTaggerWrapper<String>();
    try {
      tt.setModel("/opt/treetagger/models/english.par:iso8859-1");

      tt.setHandler((token, pos, lemma) -> 
        System.out.println(token + "\t" + pos + "\t" + lemma);


      tt.process(asList(new String[] { "This", "is", "a", "test", "." }));
    }
    finally {
      tt.destroy();
    }
  }
}

Java 8

The latest version of TT4J is now available via Maven Central. If you use Maven as your build tool, then you can add it as a dependency in your pom.xml file:

<dependency>
  <groupId>org.annolab.tt4j</groupId>
  <artifactId>org.annolab.tt4j</artifactId>
  <version>1.2.1</version>
</dependency>

License

The TreeTagger package, which is wrapped by TT4J, may only be used according to the TreeTagger license terms. TreeTagger for Java is provided under the Apache License version 2.0 without any warranty.