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Thread: help with GUI .. read file and write file

  1. #1
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    Default help with GUI .. read file and write file

    have been make this programe
    to create new file .. and write to file using gui ..
    but its not work well



    package mainme;
     import java.io.*;
     import java.util.Scanner;
    import javax.swing.*;
    import java.awt.*;
    import java.awt.event.ActionListener;
    import java.awt.event.ActionEvent;
    public class WriteToFile extends JFrame{
        private JTextField text;
        private JButton ok;
        private JFrame frame=new JFrame();
        public WriteToFile(){
            super("Save ");
             setLayout(new FlowLayout());
              text=new  JTextField (10);
      ok=new JButton("ok");
      add (text);
      add(ok);
      setSize(300,100);
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      setVisible(true);
       TextHandler handler=new TextHandler();
      text.addActionListener(handler);
      ButtonHandler handlers=new ButtonHandler();
              ok.addActionListener(handlers);    
        }
        private class TextHandler implements ActionListener{
            public void actionPerformed(ActionEvent event ){
               ok.getAction();
             }
        }
          private class ButtonHandler implements ActionListener{   
            public void actionPerformed(ActionEvent event ){
              if(event.getSource()==ok)
                 try { 
      BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
     String file_name = in.readLine();
      File file = new File(file_name);
      boolean exist = file.createNewFile();
      if (!exist)
      {
          System.out.println("or append (enter o or a)");
           file_name = in.readLine();
      // JOptionPane.showMessageDialog(null, "File already exist");
      //System.exit(0);
      }
     /* else if   (exist)
                { 
    		System.out.println("or append (enter o or a)");
                    file_name = in.readLine();}*/
      else
      {
      FileWriter fstream = new FileWriter(file_name);
      BufferedWriter out = new BufferedWriter(fstream);
      out.write(in.readLine());
      out.close();
      //System.out.println("File created successfully.");
      }
           InputStreamReader convert = new InputStreamReader(System.in);
            BufferedReader stdin = new BufferedReader(convert);
            String instr;
            File outfile = new File(file_name);
       //     boolean append = true;
             FileWriter fout = new FileWriter(file_name);
                PrintWriter fileout = new PrintWriter(fout);
                System.out.print("Enter a string: ");
                instr = stdin.readLine();
              fileout.println(instr);
                fileout.flush();
               fileout.close();
       }
           catch(IOException d) {
    	System.out.println("Error writing to file " + d);
    	 }}}
      public static void main(String[] args) {
          new WriteToFile();
       }}


  2. #2
    Super Moderator copeg's Avatar
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    Default Re: help with GUI .. read file and write file

    This thread has been cross posted here:

    http://www.java-forums.org/advanced-java/59700-help-gui-read-file-write-file.html

    Although cross posting is allowed, for everyone's benefit, please read:

    Java Programming Forums Cross Posting Rules

    The Problems With Cross Posting


  3. #3
    Super Moderator Norm's Avatar
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    Default Re: help with GUI .. read file and write file

    Also at write data to existing text file | DaniWeb
    If you don't understand my answer, don't ignore it, ask a question.

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