import java.awt.BorderLayout; 
import java.util.Locale; 
import javax.swing.; 
import mdiframework.MDIPlugin; 

public class MyPlugin extends MDIPlugin {
  private JInternalFrame iFrame = null;
  private JLabel jLabel = null;
  public JInternalFrame getJInternalFrame() {
    if (this.iFrame == null) {
      this.iFrame = new JInternalFrame();
      this.iFrame.getContentPane()
        .setLayout(new BorderLayout());
      this.iFrame.getContentPane()
        .add(this.getJLabel(),
          BorderLayout.CENTER);
      this.iFrame.setSize(400, 400);
    }
    return this.iFrame;
  }
  public JLabel getJLabel() {
    if (this.jLabel == null) {
      this.jLabel = new JLabel();
      this.jLabel.setText("Hello plug-in !!!");
      this.jLabel.setHorizontalAlignment(
        SwingConstants.CENTER);
    }
    return this.jLabel;
  }
  public String getPluginName() {
    return "My plug-in";
  }
  public int getPreferredIndex() {
    return 1;
  }
  public String getSubmenuName() {
    return "New extensions";
  }
  public void setResourceBundle(Locale locale) {
    // Optional: Set the resource bundle:
    /* this.bundle = ResourceBundle
       .getBundle("PluginBundle", locale); */
  }
}