I am getting this error:

SyntaxError: hello.rb:13: syntax error, unexpected tIDENTIFIER
public HelloWorld( InputStream data ) throws IOException {

The HelloWorld.rb is:

require "java"

import java.io.FileInputStream;
import java.io.InputStream;
import java.io.IOException;

import opennlp.tools.postag.POSModel;
import opennlp.tools.postag.POSTaggerME;

public class HelloWorld {
    private POSModel model;

    public HelloWorld( InputStream data ) throws IOException {
    setModel( new POSModel( data ) );
    }

    public void run( String sentence ) {
    POSTaggerME tagger = new POSTaggerME( getModel() );
    String[] words = sentence.split( "\\s+" );
    String[] tags = tagger.tag( words );
    double[] probs = tagger.probs();

    for( int i = 0; i < tags.length; i++ ) {
    System.out.println( words[i] + " => " + tags[i] + " @ " + probs[i] );
    }
    }

    private void setModel( POSModel model ) {
    this.model = model;
    }

    private POSModel getModel() {
    return this.model;
    }

    public static void main( String args[] ) throws IOException {
    if( args.length < 2 ) {
    System.out.println( "HelloWord <file> \"sentence to tag\"" );
    return;
    }

    InputStream is = new FileInputStream( args[0] );
    HelloWorld hw = new HelloWorld( is );
    is.close();

    hw.run( args[1] );
    }
}

when running ruby HelloWorld.rb "I am trying to make it work"

when I run the HelloWorld.java "I am trying to make it work" it works perfectly, of course the .java doesn't contain the require java statement.

EDIT:

I followed the following steps.

The output for jruby -v :

jruby 1.6.7.2 (ruby-1.8.7-p357) (2012-05-01 26e08ba) (Java HotSpot(TM) 64-Bit Server VM 1.6.0_35) [darwin-x86_64-java]