OutFile.java

import javax.swing.SwingUtilities;
import java.awt.BorderLayout;
import javax.swing.JPanel;
import javax.swing.JFrame;
import java.awt.Dimension;
import javax.swing.JTextField;
import java.awt.Rectangle;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;

import javax.swing.JButton;
import javax.swing.JTextArea;
import javax.swing.JScrollBar;
import java.awt.Scrollbar;
import java.awt.ScrollPane;
import java.awt.Panel;
import java.awt.GridBagLayout;
import javax.swing.JScrollPane;
import javax.swing.JLabel;
import java.awt.Window;

public class OutFile extends JFrame {

 private static final long serialVersionUID = 1L;

 private JPanel jContentPane = null;

 private JTextField jTextField = null;

 private JButton jButton = null;

 private JTextArea jTextArea = null;

 private JButton jButton1 = null;

 private JScrollPane jScrollPane = null;

 private JLabel jLabel = null;

 /**
  * This method initializes jTextField 
  *  
  * @return javax.swing.JTextField 
  */
 private JTextField getJTextField() {
  if (jTextField == null) {
   jTextField = new JTextField();
   jTextField.setBounds(new Rectangle(57, 17, 511, 35));
  }
  return jTextField;
 }

 /**
  * This method initializes jButton 
  *  
  * @return javax.swing.JButton 
  */
 private JButton getJButton() {
  if (jButton == null) {
   jButton = new JButton();
   jButton.setBounds(new Rectangle(596, 17, 107, 34));
   jButton.setText("Open");
   jButton.addActionListener(new java.awt.event.ActionListener() {
    public void actionPerformed(java.awt.event.ActionEvent e) {
     System.out.println("actionPerformed()"); // TODO Auto-generated Event stub actionPerformed()
     String st=jTextField.getText();
     File f= new File(st);
     try{
      FileReader fr= new FileReader(f);
      BufferedReader br = new BufferedReader(fr);
      String s = br.readLine();
      String t =s;
      while(s!=null){
       s= br.readLine();
       t= t+"/n"+s;
       
      }
      t=t.substring(0,t.length()-4);
      jTextArea.setText(t);
      br.close();
     }catch(FileNotFoundException e1){
      jTextArea.setText("File "+ st +" is not found!");
     }
     catch(IOException e2){
      e2.printStackTrace();
     }
     
    }
   });
   
  }
  return jButton;
 }

 /**
  * This method initializes jTextArea 
  *  
  * @return javax.swing.JTextArea 
  */
 private JTextArea getJTextArea() {
  if (jTextArea == null) {
   jTextArea = new JTextArea();
  }
  return jTextArea;
 }

 /**
  * This method initializes jButton1 
  *  
  * @return javax.swing.JButton 
  */
 private JButton getJButton1() {
  if (jButton1 == null) {
   jButton1 = new JButton();
   jButton1.setText("Save");
   jButton1.setBounds(new Rectangle(598, 63, 105, 35));
   jButton1.addActionListener(new java.awt.event.ActionListener() {
    public void actionPerformed(java.awt.event.ActionEvent e) {
     System.out.println("actionPerformed()");
     // TODO Auto-generated Event stub actionPerformed()
     File file = new File(jTextField.getText());
     try{
//      InputStreamReader is = new InputStreamReader(System.in);
//      BufferedReader br1 = new BufferedReader(is);
      PrintWriter out = new PrintWriter(new FileWriter(file));
//      String s =br1.readLine();
      String s =jTextArea.getText();
      
//      while(!s.equals("")){
       out.print(s);
//       s =jTextArea.getText();
//      }
      
//      is.close();
//      br1.close();
      out.close();
     }catch(IOException e2)
     {
      jTextArea.setText(String.valueOf(e2));
     }
    }
   });
  }
  return jButton1;
 }

 /**
  * This method initializes jScrollPane 
  *  
  * @return javax.swing.JScrollPane 
  */
 private JScrollPane getJScrollPane() {
  if (jScrollPane == null) {
   jScrollPane = new JScrollPane();
   jScrollPane.setBounds(new Rectangle(13, 68, 556, 171));
   jScrollPane.setViewportView(getJTextArea());
  }
  return jScrollPane;
 }

 /**
  * @param args
  */
 public static void main(String[] args) {
  // TODO Auto-generated method stub
  SwingUtilities.invokeLater(new Runnable() {
   public void run() {
    OutFile thisClass = new OutFile();
    thisClass.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    thisClass.setVisible(true);
   }
  });
 }

 /**
  * This is the default constructor
  */
 public OutFile() {
  super();
  initialize();
 }

 /**
  * This method initializes this
  *
  * @return void
  */
 private void initialize() {
  this.setSize(726, 296);
  this.setContentPane(getJContentPane());
  this.setTitle("File-IO");
 }

 /**
  * This method initializes jContentPane
  *
  * @return javax.swing.JPanel
  */
 private JPanel getJContentPane() {
  if (jContentPane == null) {
   jLabel = new JLabel();
   jLabel.setBounds(new Rectangle(10, 18, 42, 32));
   jLabel.setText("Path:");
   jContentPane = new JPanel();
   jContentPane.setLayout(null);
   jContentPane.add(getJTextField(), null);
   jContentPane.add(getJButton(), null);
   jContentPane.add(getJButton1(), null);
   jContentPane.add(getJScrollPane(), null);
   jContentPane.add(jLabel, null);
  }
  return jContentPane;
 }

}  //  @jve:decl-index=0:visual-constraint="10,10"