Slider and DialogListener demo

Dialog_Test.java

import ij.IJ;
import ij.gui.GenericDialog;
import ij.gui.DialogListener;
import ij.ImagePlus;
import ij.plugin.PlugIn;
import java.awt.AWTEvent;
import java.awt.Scrollbar;

public class Dialog_Test implements PlugIn, DialogListener {
  private static GenericDialog gd;
  String text;

  public void run(String arg) {
    showDialog();
    IJ.log("Text: "+text);
  }

  void showDialog() {
    gd = new GenericDialog("Test Dialog");
    gd.addSlider("X", 0, 100, 0);
    gd.addSlider("Y", 0, 200, 0);
    gd.addDialogListener(this);
    gd.showDialog();
  }

  public boolean dialogItemChanged(GenericDialog gd, AWTEvent e) {
    final double Valor_X = gd.getNextNumber();
    final double Valor_Y = gd.getNextNumber();
    Scrollbar slider1 = (Scrollbar)gd.getSliders().get(0);
    Scrollbar slider2 = (Scrollbar)gd.getSliders().get(1);
    IJ.log("Slider 1 value: "+IJ.d2s(slider1.getValue()));
    slider2.setValue(slider1.getValue());
    return true;
  }
}