13.15.java

// Fig. 13.15: MultipleSelectionTest.java
// Copying items from one List to another.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
        public class MultipleSelectionTest extends JFrame {
        private JList colorList, copyList;
        private JButton copyButton;
        private final String colorNames[] = { "Black", "Blue", "Cyan",
        "Dark Gray", "Gray", "Green", "Light Gray", "Magenta", "Orange",
        "Pink", "Red", "White", "Yellow"};
// set up GUI
        public MultipleSelectionTest()
        {
        super( "Multiple Selection Lists");
// get content pane and set its layout
        Container container = getContentPane();
        container.setLayout( new FlowLayout() );
// set up JList colorList
        colorList = new JList( colorNames );
        colorList.setVisibleRowCount( 5);
        colorList.setSelectionMode(
        ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
        container.add( new JScrollPane( colorList ) );

// create copy button and register its listener
        copyButton = new JButton( "Copy >>>" );
        copyButton.addActionListener(
        new ActionListener() {  // anonymous inner class
// handle button event
        public void actionPerformed( ActionEvent event )
        {
// place selected values in copyList
        copyList.setListData( colorList.getSelectedValues() );
        }
        } // end anonymous inner class
        ); // end call to addActionListener
        container.add( copyButton );
// set up JList copyList
        copyList = new JList( );
        copyList.setVisibleRowCount( 5);
        copyList.setFixedCellWidth( 100);
        copyList.setFixedCellHeight( 15);
        copyList.setSelectionMode(
        ListSelectionModel.SINGLE_INTERVAL_SELECTION);
        container.add( new JScrollPane( copyList ) );

        setSize( 300, 130);
        setVisible( true);
        } // end constructor MultipleSelectionTest
        public static void main( String args[] )
        {
        MultipleSelectionTest application = new MultipleSelectionTest();
        application.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE);
        }
        } // end class MultipleSelectionTest