import Java awt. *; 
Import the Java. The awt. Event. An ActionEvent; 
Import the Java. IO. *; 
import javax.swing.*; 
Public class Ftest extends JFrame {
Private JScrollPane scrollPane; 
Private JPanel jContentPane=null; 
Private JTextArea JTextArea=null; 
Private JButton openButton=null; 
Private JButton closeButton=null; 
Private JPanel controlPanel=null; 




Private JTextArea getjTextArea () {

If (jTextArea==null) {
JTextArea=new jTextArea (); 
} 
Return jTextArea; 
} 
Private JPanel getControlPanel () {
If (controlPanel==null) {
FlowLayout FlowLayout=new FlowLayout (); 
FlowLayout. SetVgap (1); 
ControlPanel=new JPanel (); 
ControlPanel. SetLayout (flowLayout); 
ControlPanel. Add (getOpenButton (), null); 
ControlPanel. Add (getCloseButton (), null); 
} 
Return controlPanel; 
} 
Private JButton getOpenButton () {
If (openButton==null) {
OpenButton=new JButton (); 
OpenButton. SetText (" written to the file "); 
OpenButton. AddActionListener (new Java. The awt. Event. The ActionListener () {
@ Override 
Public void actionPerformed (an ActionEvent e) {
The File File=new File (" D: \ \ TPG TXT "); 
Try {
FileWriter out=new FileWriter (file); 
String s=jTextArea. GetText (); 
Out. Write (s); 
out.close(); 
{} the catch (IOException e1) 
E1. PrintStackTrace (); 
} 
} 
}); 
} 
Return openButton; 
} 
Private JButton getCloseButton () {
If (closeButton==null) {
CloseButton=new JButton (); 
CloseButton. SetText (" read the file "); 
CloseButton. AddActionListener (new Java. The awt. Event. The ActionListener () {
@ Override 
Public void actionPerformed (an ActionEvent e) {
The File File=new File (" D: \ \ TPG TXT "); 
Try {

FileReader in=new FileReader (file); 
Char byt []=new char [1024]. 
Int len=in. Read (byt); 
JTextArea. SetText (new String (byt, 0, len)); 
in.close(); 
{} the catch (Exception e1) 
E1. PrintStackTrace (); 
} 
} 
}); 
} 
Return the closeButton; 
} 

Public Ftest () {
Super (); 
The initialize (); 
} 
Private JPanel the initialize () {
If (jContentPane==null) {
JContentPane=new JPanel (); 
JContentPane. SetLayout (new BorderLayout ()); 
JContentPane. Add (getScrollPane (), BorderLayout. CENTER); 
JContentPane. Add (getControlPanel (), BorderLayout. SOUTH); 
} 
Return jContentPane; 
} 

Public static void main (String [] args) {
Ftest thisClass=new Ftest (); 
ThisClass. Pack (); 
ThisClass. SetDefaultCloseOperation (JFrame. EXIT_ON_CLOSE); 
ThisClass. SetVisible (true); 
} 
Protected the JScrollPane getScrollPane () {
If (scrollPane==null) {
ScrollPane=new JScrollPane (); 
ScrollPane. SetViewportView (getjTextArea ()); 
} 
Return the scrollPane; 
} 
}