public void pintarGraf(UndirectedSparseGraph<String, Double> g){
		SimpleGraphView graphView = new SimpleGraphView(g);
		graphView.mostraVista();
	}




public void convertirGrafPerVisualitzar(){
    	UndirectedSparseGraph<String, Double> g = new UndirectedSparseGraph<String,Double>();
    	graf = ponderacions.getGraf();
    	for(String s : graf.consultarNodes()) {
    		g.addVertex(s);
    	}
    	for(String s : graf.consultarNodes()){
    		Set<Map.Entry<String, Double>> a = graf.consultarArestesNode(s);
    		Double i = 0.0;
    		for(Entry<String, Double> s2 : a){
    			g.addEdge(i, s,s2.getKey());
    			++i;
    		}
    	}
    	ictrlPresentacio.pintarGraf(g);
    }






package asdf;

import edu.uci.ics.jung.algorithms.layout.CircleLayout;
import edu.uci.ics.jung.algorithms.layout.FRLayout;
import edu.uci.ics.jung.algorithms.layout.Layout;
import edu.uci.ics.jung.algorithms.layout.TreeLayout;
import edu.uci.ics.jung.graph.Graph;
import edu.uci.ics.jung.graph.SparseMultigraph;
import edu.uci.ics.jung.graph.UndirectedSparseGraph;
import edu.uci.ics.jung.visualization.BasicVisualizationServer;
import edu.uci.ics.jung.visualization.decorators.ToStringLabeller;
import edu.uci.ics.jung.visualization.picking.PickedInfo;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.GridLayout;
import java.awt.Paint;
import java.awt.Toolkit;

import javax.swing.JFrame;

import org.apache.commons.collections15.Transformer;

public class SimpleGraphView {
	Graph<String, Double> g;
    /** Creates a new instance of SimpleGraphView */
    public SimpleGraphView(UndirectedSparseGraph<String, Double> gr) {
      g = gr;

   }

   private static class VertexLabelTransformer implements Transformer<Integer,String>{
        private final PickedInfo<Integer> pi;

        public VertexLabelTransformer( PickedInfo<Integer> pi ){
            this.pi = pi;
        }

        @Override
        public String transform(Integer t) {
              return t.toString();
        }
    }

    public void mostraVista() {

    	/*
    	Transformer<String,Paint> vertexColor = new Transformer<String,Paint>() {

			@Override
			public Paint transform(String i) {
				// TODO Auto-generated method stub
				if(i.equals("1")) return Color.GREEN;
                else if (i.equals("2"))return Color.RED;
                else return Color.CYAN;

			}
        };
    	*/

        Layout<String, Double> layout = new FRLayout(g);
        Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
        d.setSize(d.getWidth(), d.getHeight()-60);
        layout.setSize(d);
        BasicVisualizationServer<String,Double> vv = new BasicVisualizationServer<String, Double>(layout);
        vv.setPreferredSize(new Dimension(d));
        //vv.getRenderContext().setVertexFillPaintTransformer(vertexColor);
        vv.getRenderContext().setVertexLabelTransformer(new ToStringLabeller());
        JFrame frame = new JFrame("Simple Graph View");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        frame.getContentPane().add(vv);
        frame.pack();
        frame.setVisible(true);
        frame.setExtendedState(frame.getExtendedState() | JFrame.MAXIMIZED_BOTH);
    }

}