Source Code : Sharing a Model between a JList and JComboBox

Java Is Open Source Programming Language You Can Download From Java and Java Libraries From http://www.oracle.com. Click Here to download
We provide this code related to title for you to solve your developing problem easily. Libraries which is import in this program you can download from http://www.oracle.com. Click Here or search from google with Libraries Name you get jar file related it

Sharing a Model between a JList and JComboBox

 
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.ComboBoxModel;
import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JScrollPane;
import javax.swing.ListCellRenderer;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;

public class ListIt {

  final String partsList[][] = { { "Item 1", "10", "99c" },
      { "Item 2", "12", "$18.99" }, { "Item 3", "1", "$10.00" } };

  class PartsListModel extends DefaultListModel implements ComboBoxModel {

    Object currentValue;

    public PartsListModel() {
      for (int i = 0, n = partsList.length; i < n; i++) {
        addElement(partsList[i]);
      }
    }

    // ComboBoxModel methods
    public Object getSelectedItem() {
      return currentValue;
    }

    public void setSelectedItem(Object anObject) {
      currentValue = anObject;
      fireContentsChanged(this, -1, -1);
    }
  }

  class MyLabelRenderer extends JLabel implements ListCellRenderer {
    public MyLabelRenderer() {
      setOpaque(true);
    }

    public Component getListCellRendererComponent(JList list, Object value,
        int index, boolean isSelected, boolean cellHasFocus) {
      if (value != null) {
        String values[] = (String[]) value;
        String setting = values[0] + " / " + values[1] + " / "
            + values[2];
        setText(setting);
      }
      setBackground(isSelected ? Color.BLUE : Color.WHITE);
      setForeground(isSelected ? Color.WHITE : Color.BLUE);
      return this;
    }
  }

  public ListIt() {
    JFrame f = new JFrame();
    final PartsListModel pcm = new PartsListModel();
    ListCellRenderer lcr = new MyLabelRenderer();
    JList jl = new JList(pcm);
    jl.setCellRenderer(lcr);
    ListSelectionModel lsm = jl.getSelectionModel();
    lsm.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    jl.addListSelectionListener(new ListSelectionListener() {
      public void valueChanged(ListSelectionEvent e) {
        if (!e.getValueIsAdjusting()) {
          String element[] = (String[]) pcm.getElementAt(e
              .getFirstIndex());
          System.out.println(element[0] + " : " + element[1] + " : "
              + element[2]);
        }
      }
    });
    JScrollPane jsp = new JScrollPane(jl);
    JComboBox jc = new JComboBox(pcm);
    jc.setRenderer(lcr);
    JButton jb = new JButton("Add Merchandise");
    jb.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        pcm.addElement(partsList[(int) (Math.random() * partsList.length)]);
      }
    });
    Container c = f.getContentPane();
    c.add(jsp, BorderLayout.NORTH);
    c.add(jc, BorderLayout.CENTER);
    c.add(jb, BorderLayout.SOUTH);
    f.setSize(250, 250);
    f.show();
  }

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


           
         
  

Thank with us