import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
public class TextAreaFrame extends JFrame implements ActionListener {
private JButton insertButton = new JButton("Insert");
private JButton wrapButton = new JButton("Wrap");
private JButton noWrapButton = new JButton("No wrap");
private JTextArea textArea = new JTextArea(8, 40);
private JScrollPane scrollPane = new JScrollPane(textArea);
public TextAreaFrame() {
JPanel p = new JPanel();
p.add(insertButton);
insertButton.addActionListener(this);
p.add(wrapButton);
wrapButton.addActionListener(this);
p.add(noWrapButton);
noWrapButton.addActionListener(this);
getContentPane().add(p, "South");
getContentPane().add(scrollPane, "Center");
setTitle("TextAreaTest");
setSize(300, 300);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
}
public void actionPerformed(ActionEvent evt) {
Object source = evt.getSource();
if (source == insertButton)
textArea
.append("The quick brown fox jumps over the lazy dog. The quick brown fox jumps over the lazy dog.");
else if (source == wrapButton) {
textArea.setLineWrap(true);
scrollPane.validate();
} else if (source == noWrapButton) {
textArea.setLineWrap(false);
scrollPane.validate();
}
}
public static void main(String[] args) {
JFrame f = new TextAreaFrame();
f.show();
}
}