import java.awt.Container;
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.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
public class TextEditFrame extends JFrame {
private JTextArea textArea = new JTextArea(8, 40);
private JScrollPane scrollPane = new JScrollPane(textArea);
private JTextField fromField = new JTextField(8);
private JTextField toField = new JTextField(8);
public TextEditFrame() {
setTitle("TextEditTest");
setSize(500, 300);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
Container contentPane = getContentPane();
JPanel panel = new JPanel();
JButton replaceButton = new JButton("Replace");
panel.add(replaceButton);
replaceButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
String from = fromField.getText();
int start = textArea.getText().indexOf(from);
if (start >= 0 && from.length() > 0)
textArea.replaceRange(toField.getText(), start, start
+ from.length());
}
});
panel.add(fromField);
panel.add(new JLabel("with"));
panel.add(toField);
contentPane.add(panel, "South");
contentPane.add(scrollPane, "Center");
}
public static void main(String[] args) {
JFrame f = new TextEditFrame();
f.show();
}
}