Notes

FIG:12.23
##ListFrame

import java.awt.FlowLayout;
import java.awt.Color;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JScrollPane;
import javax.swing.event.ListSelectionListener;
import javax.swing.event.ListSelectionEvent;
import javax.swing.ListSelectionModel;

public class ListFrame extends JFrame {

private final JList<String> colorJList;
private static final String[] colorNames = {"Black", "Blue", "Cyan", "Dark Gray", "Gray", "Green", "Light Gray", "Magenta", "Orange", "Pink", "Red", "White", "Yellow"};
private static final Color[] colors = {Color.BLACK, Color.BLUE, Color.CYAN, Color.DARK_GRAY, Color.GRAY, Color.GREEN, Color.LIGHT_GRAY, Color.MAGENTA, Color.ORANGE, Color.PINK, Color.RED, Color.WHITE, Color.YELLOW};

public ListFrame() {
super("List Test");
setLayout(new FlowLayout());
colorJList = new JList<String>(colorNames);
colorJList.setVisibleRowCount(5);
colorJList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

add(new JScrollPane(colorJList));
colorJList.addListSelectionListener(
new ListSelectionListener() {
@Override
public void valueChanged(ListSelectionEvent event) {
getContentPane().setBackground(
colors[colorJList.getSelectedIndex()]);
}
}
);
}
}


FIG:19.24
##ListTest

import javax.swing.JFrame;

public class ListTest {

public static void main(String[] args) {
ListFrame listFrame = new ListFrame();
listFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
listFrame.setSize(350, 150);
listFrame.setVisible(true);
}
}



FIG:12.25
##MultipleSelectionFrame

import java.awt.FlowLayout;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JButton;
import javax.swing.JScrollPane;
import javax.swing.ListSelectionModel;

public class MultipleSelectionFrame extends JFrame {

private final JList<String> colorJList;
private final JList<String> copyJList;
private JButton copyJButton;

private static final String[] colorNames = {"Black", "Blue", "Cyan",
"Dark Gray", "Gray", "Green", "Light Gray", "Magenta", "Orange",
"Pink", "Red", "White", "Yellow"};

public MultipleSelectionFrame() {
super("Multiple Selection Lists");
setLayout(new FlowLayout());

colorJList = new JList<String>(colorNames);
colorJList.setVisibleRowCount(5);

colorJList.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
add(new JScrollPane(colorJList));

copyJButton = new JButton("Copy >>>");
copyJButton.addActionListener(
new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
copyJList.setListData(
colorJList.getSelectedValuesList().toArray(new String[0]));
}
}
);

add(copyJButton);

copyJList = new JList<String>();
copyJList.setVisibleRowCount(5);
copyJList.setFixedCellHeight(15);
copyJList.setSelectionMode(
ListSelectionModel.SINGLE_INTERVAL_SELECTION);
add(new JScrollPane(copyJList));
}

}



FIG:12.25
##MultipleSelectionTest

import javax.swing.JFrame;

public class MultipleSelectionTest {

public static void main(String[] args) {
MultipleSelectionFrame multipleSelectionFrame = new MultipleSelectionFrame();
multipleSelectionFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
multipleSelectionFrame.setSize(350, 150);
multipleSelectionFrame.setVisible(true);
}
}