revise this code


M

matrix

PLEASE compile this code on your pc and add some new items then try to
update it using update button and we will see mu problem clearly which
is:
I have a main window ,by clicking on (add new item) , another window
open to fill the form
on clicking on (save to file),my form will be saved in text file.
if I open this text file using notepad for example,then I found my data
stored but concatenated
although I add to the saved string "\n" [hint:you will find two ## to
direct u to this line in
my code text]
if I change it to "\n\n" then my data is stored in separate lines which
I need.
the Problem that when I read the saved file by clicking on "update data
item" ,the returned
data in the form is not as saved
MY CODE:::

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
public class DataDictionaryMain extends JFrame implements
ActionListener
{
JButton addItem,updateItem,searchItem,exit;
public DataDictionaryMain()
{
super("Main Window");
setSize(400,200);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
addItem = new JButton("add new item");
updateItem = new JButton("update data item");
searchItem= new JButton("search for item");
exit= new JButton ("Exit Program");

addItem.addActionListener(this);
updateItem.addActionListener(this);
searchItem.addActionListener(this);
exit.addActionListener(this);

JLabel label = new JLabel("Data Dictionary Program");

JPanel pane = new JPanel();
pane.setLayout(new GridLayout(5,1,10,10));
pane.add(label);
pane.add(addItem);
pane.add(updateItem);
pane.add(searchItem);
pane.add(exit);

setContentPane(pane);
setVisible(true);

}


public static void main (String[] args)
{
DataDictionaryMain main = new DataDictionaryMain();
}


public void actionPerformed (ActionEvent ave )
{
Object ob = ave.getSource();
if(ob == addItem )
{
Form1 f= new Form1( "form");
}

if(ob == updateItem)
{
Form1 form= new Form1( "form");
File file = form.getAFileToOpen();
form.writeFileToEditor(file);

}

if(ob == searchItem)
{
}
if(ob == exit)
{
System.exit(0);
}
}

}




public class Form1 extends JFrame implements ActionListener
{

JFileChooser filechooser;
JTextField text1 ;
JTextField text2 ;
JTextField text3 ;
JTextArea area4 ;
JButton saveFile;
public Form1 (String name)
{
super(name);
setSize(350,500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
text1 = new JTextField (30);
text2 = new JTextField (30);
text3 = new JTextField (30);
area4 = new JTextArea (10,30);

saveFile = new JButton("save to file");

JLabel label1 = new JLabel ("Name");
JLabel label2 = new JLabel ("Type");
JLabel label3 = new JLabel ("Date");
JLabel label4 = new JLabel ("Description");

saveFile.addActionListener(this);
JPanel pane =new JPanel();
pane.add(label1);
pane.add(text1);
pane.add(label2);
pane.add(text2);
pane.add(label3);
pane.add(text3);
pane.add(label4);
pane.add(area4);
pane.add(saveFile);
setContentPane(pane);
area4.setLineWrap(true);
area4.setWrapStyleWord(true);
setVisible(true);

}



public static void main (String [] arguments)
{
Form1 f= new Form1( "form");



}


public void actionPerformed(ActionEvent evt )
{
Object src=evt.getSource();
if(src==saveFile )
{
/*##*/ String a =
text1.getText()+"\n"+text2.getText()+"\n"+text3.getText()+"\n"+area4.getText();
String f =text1.getText();
saveInFile(a,f);
JOptionPane.showMessageDialog(null,"The New Data Item save
correctly");


}
}

public File getAFileToOpen()
{
File file = null;
File currentdirectory = new File(".");
JFileChooser filechooser = new JFileChooser(currentdirectory);
int replycode = filechooser.showOpenDialog(null);
if (replycode == JFileChooser.APPROVE_OPTION){
file = filechooser.getSelectedFile();
}
return file;
}

public void writeFileToEditor(File file)
{

try{
FileReader filereader = new FileReader(file);
BufferedReader bufferedreader = new BufferedReader(filereader);
String lineread = "";
text1.setText(bufferedreader.readLine());
text2.setText(bufferedreader.readLine());
text3.setText(bufferedreader.readLine());
while ((lineread = bufferedreader.readLine()) != null){
area4.setText(lineread + "\n");
}
filereader.close();
}catch (FileNotFoundException fnfe){
System.err.println("FileNotFoundException: " + fnfe.getMessage());

}catch (IOException ioe){
System.err.println("IOException: " + ioe.getMessage());

}

}
public void saveInFile(String s,String fileName)
{
try{
File f=new File(fileName+".txt");;
FileWriter fw = new FileWriter(f);
StringReader sr = new StringReader(s);
BufferedReader br = new BufferedReader(sr);
String lineread = "";
while((lineread=br.readLine()) != null )
{
fw.write(lineread+"\n\r");
}
fw.close();
}
catch(IOException io){
System.err.println();
}
}
}
 
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