Hi,

I have an interface with 4 labels, 4 textfields and some buttons like "Add", "modify, "next", etc. The user will enter name, first name, birth date, etc. After clicking the button "add", the information that he has entered will be added on rdf file. The "next" (in french "Suivant") button didn't work. When i click on "next" button, nothing appears on textfields. There is nothing in the textfields.
Can you help me please?
Thanks.


Java Code:
import java.util.*;
import com.hp.hpl.jena.rdf.model.*;
import com.hp.hpl.jena.ontology.*;
import com.hp.hpl.jena.ontology.impl.*;
import com.hp.hpl.jena.util.*;
import java.io.*;
import java.awt.*; 	
import java.awt.event.*; 
import com.hp.hpl.jena.vocabulary.RDF;
import com.hp.hpl.jena.vocabulary.XSD;
import com.hp.hpl.jena.util.iterator.ExtendedIterator;
import org.apache.log4j.Logger;


public class FamilyModel extends Frame{	
	TextField[]tabTF=new TextField[4];
	Button bAjout, bModifier, bSupprimer, bPrecedent, bSuivant;	
	
	Button creerBouton(String S, int x, int y)
	{
		Button b=new Button(S);
		add(b);			
		b.setBounds(x,y,120,30);
		return b;
	}
	
	void creerLabel(String etiquette, int x, int y)
	{
		Label la=new Label(etiquette);
		la.setBounds(x,y,120,25);
		add(la);
	}
	
		
	public FamilyModel ()
	{
			setLayout (null);
			setBackground (Color.pink);
			setBounds (100,200,600,450);
			addWindowListener(new FermerFenetre());	//close windows when click on X
			
			creerLabel("Prenom : ",10,50);
			creerLabel("Nom : ",10,100);
			creerLabel("Date de Naissance: ",10,145);
			creerLabel("Genre (H ou F): ",10,190);
						
			//TextFields
			for(int i=0;i<4;i++)
			{
				tabTF[i]=new TextField("");
				tabTF[i].setBackground(Color.white);
				add(tabTF[i]);
			}
			tabTF[0].setBounds(120,50,150,25);
			tabTF[1].setBounds(120,100,150,25);
			tabTF[2].setBounds(120,145, 100,25);
			tabTF[3].setBounds(120,190, 45,25);
			
			bAjout=creerBouton("Ajouter",20,250); //Add
			setVisible(true);
			
			bModifier=creerBouton("Modifier",138,250); //Modify
			setVisible(true);
			
			bSupprimer=creerBouton("Supprimer",250,250); //Remove
			setVisible(true);
			
			bPrecedent=creerBouton("Precedent",360,250); //back
			
			bSuivant=creerBouton("Suivant",450,250); //next
			setVisible(true);	
			
			
			
			traitement(this); 
			
	}
	
	
	
	void traitement(Frame fenetre)
	{
		
		bAjout.addActionListener(new ActionAjoutPersonne()); //Add
		bSuivant.addActionListener(new ActionSuivant()); //Next
	}
	
    //ActionAdd
	public class ActionAjoutPersonne extends Onto implements ActionListener
	{
		
		public void actionPerformed(ActionEvent evt)
		{
					
			Onto f;
						
			f = new Onto();
	
			
			for(int i=0;i<4;i++)
			{
				
							
				tabTF[i].getText();	
				Resource p1 = model.createResource(uriBase+tabTF[0].getText());
				p1.addProperty(RDF.type, f.personne);
				
				if (i==0) 
				{
					p1.addProperty(f.aPourPrenom, tabTF[i].getText());
					
				}
				if (i==1)
				{
					p1.addProperty(f.aPourNom, tabTF[i].getText());
				}
				if (i==2)
				{
					
					p1.addProperty(f.aDateNaiss, tabTF[i].getText());
				}
				if (i==3)
				{
					if (tabTF[i].getText().equals("F"))
					{
						p1.addProperty(f.aGenre, tabTF[i].getText());
						p1.addProperty(RDF.type, f.femme);
					}
					else 
						if (tabTF[i].getText().equals("H"))
						{
							p1.addProperty(f.aGenre, tabTF[i].getText());
							p1.addProperty(RDF.type, f.homme);
						}
				}
				
				StringWriter sw = new StringWriter();
				model.write(sw, "RDF/XML-ABBREV");
				String owlCode = sw.toString();
				File file = new File("d:/teste20.rdf");
				try{
					FileWriter fw = new FileWriter(file);
					fw.write(owlCode);
					fw.close();
				} catch(FileNotFoundException fnfe){
					fnfe.printStackTrace();} 
				catch(IOException ioe){
						ioe.printStackTrace();
				}	
				
			}
			
		}
        }
	
	//ActionNext
	class ActionSuivant extends Onto implements ActionListener
	{
		public void actionPerformed(ActionEvent evt)
		{
					
			Onto s = new Onto();
			int indice=1;
			String []M= new String [10];
			
			//Read RDF File
			InputStream in = FileManager.get().open("d:\teste20.rdf");
			if (in == null) 
			{
			  throw new IllegalArgumentException("File: " + "d:\teste20.rdf" + " not found");
			}
			s.model.read(in, null);
				
			//Search instances of Personne Class			
			ExtendedIterator instances=s.personne.listInstances();
					
			indice++;
			for(int p=0;p<10;p++) //10 instances
			{
				while (instances.hasNext())
				{
				     Individual thisInstance = (Individual) instances.next();
				     M[p]= thisInstance.getLocalName();
				     
					if(p==indice)
			        {					
			          tabTF[0].setText((thisInstance.getPropertyResourceValue(s.aPourPrenom)).toString());
			          tabTF[1].setText((thisInstance.getPropertyResourceValue(s.aPourNom)).toString());
			          tabTF[2].setText((thisInstance.getPropertyResourceValue(s.aDateNaiss)).toString());
			        }
			     }
			 }
		}
	}
	
	//Clode window when clicked on X
	public class FermerFenetre extends WindowAdapter {

		public void windowClosing(WindowEvent evt)
		{
			if(evt.getWindow().getName().equals("frame0"))
			{
				System.exit(0);
			}
			else
			{
				evt.getWindow().dispose();
			}
		}
	}
	
	//ontology
	public class Onto 
	{
		OntClass personne, genre, homme, femme, feminin, masculin, evenement, deces, mariage, divorce;
		OntModel model;
		String uriBase;
		ObjectProperty aPourFils, aPourFille, aGenre;
		DatatypeProperty aPourNom, aPourPrenom, aDateNaiss;
		
		public Onto (){
		model = ModelFactory.createOntologyModel(OntModelSpec.OWL_DL_MEM);
		uriBase = "http://www.something.com/FAM";
		model.createOntology(uriBase);
		
		//Classes
		personne = model.createClass(uriBase+"#personne");
		femme = model.createClass(uriBase+"#femme");
		homme = model.createClass(uriBase+"#homme");
		genre = model.createClass(uriBase+"#genre");
		feminin = model.createClass(uriBase+"#feminin");
		masculin = model.createClass(uriBase+"#masculin");
		evenement = model.createClass(uriBase+"#evenement");
		deces = model.createClass(uriBase+"#deces");
		mariage = model.createClass(uriBase+"#mariage");
		divorce = model.createClass(uriBase+"#divorce");
		
		
		//Sub-classes
		genre.addSubClass(feminin);
		genre.addSubClass(masculin);
		personne.addSubClass(homme);
		personne.addSubClass(femme);
		evenement.addSubClass(deces);
		evenement.addSubClass(mariage);
		evenement.addSubClass(divorce);
		
		aPourFils = model.createObjectProperty(uriBase+"#aPourFils");
		aPourFils.setDomain(personne);
		aPourFils.setRange(homme);
		
		aPourFille = model.createObjectProperty(uriBase+"#aPourFille");
		aPourFille.setDomain(personne);
		aPourFille.setRange(femme);
		
		aGenre = model.createObjectProperty(uriBase+"#aGenre");
		aGenre.setDomain(personne);
		aGenre.setRange(genre);
		
		aPourNom = model.createDatatypeProperty(uriBase+"#aPourNom"); 
		aPourNom.setDomain(personne);
		aPourNom.setRange(XSD.xstring);
		
		aPourPrenom = model.createDatatypeProperty(uriBase+"#aPourPrenom"); 
		aPourPrenom.setDomain(personne);
		aPourPrenom.setRange(XSD.xstring);
		
		aDateNaiss = model.createDatatypeProperty(uriBase+"#aDateNaiss"); 
		aDateNaiss.setDomain(personne);
		aDateNaiss.setRange(XSD.xstring);
		}

	}
	
	public static void main(String args[]) 
	{
	
		
		new FamilyModel();
		
		
	}
}