import java.io.*;
import java.awt.*;
import java.util.*;
import java.awt.event.*;

public class FileSearch extends Frame implements ActionListener, WindowListener
{

  private BufferedReader inFile;
  private Button searchButton;
  private TextField result1Field;
  private TextField result2Field;
  private TextField personField;
  private TextField fileNameField;
  private TextField errorField;
  private String fileName;

  public static void main(String [ ] args)
  {
     FileSearch search = new FileSearch();
     search.setSize(400,400);
     search.makeGui();
     search.setVisible(true);
  }

  public void makeGui()
  {
     setLayout(new FlowLayout() );

     errorField = new TextField("Type the File name:");
     errorField.setEditable(false);
     add(errorField);

     fileNameField = new TextField(20);
     fileNameField.setText("");
     add(fileNameField);

     searchButton = new Button("Search");
     add(searchButton);
     searchButton.addActionListener(this);

     add(new Label("Type Name"));
     personField = new TextField(20);
     personField.setText("");
     add(personField);

     add(new Label("Result1:"));
     result1Field = new TextField(5);
     result1Field.setEditable(false);
     add(result1Field);

     add(new Label("Result2:"));
     result2Field = new TextField(5);
     result2Field.setEditable(false);
     add(result2Field);
     this.addWindowListener(this);
   }

   public void actionPerformed(ActionEvent evt)
   {
      if(evt.getSource()==searchButton)
      {
         fileName = fileNameField.getText();
         try
         {
           inFile = new BufferedReader(new FileReader(fileName));
         }

         catch (IOException e)
         {
            errorField.setText("Can't find file ");
            return;
         }
      errorField.setText("Type the file name: ");


      try
      {
         String line;
         boolean found = false;

         while(((line = inFile.readLine()) != null) && (! found))
        
         {
            StringTokenizer tokens = new StringTokenizer( line, ",");
            String nameInFile = tokens.nextToken();

            if(personField.getText().equals(nameInFile))
            {
               found = true;
               result1Field.setText(tokens.nextToken() );
               result2Field.setText(tokens.nextToken() );

            }
         }
      
      inFile.close();
   }

   catch(IOException e)
   {
     System.err.println("Error reading file "+fileName +":"+e.toString() );
     System.exit(1);
   }
  }
}

public void windowClosing(WindowEvent e)
{
  System.exit(0);
}

   public void windowIconified(WindowEvent e)
   {
   }
   
   public void windowOpened(WindowEvent e)
   {
   }

   public void windowClosed(WindowEvent e)
   {
   }

   public void windowDeiconified(WindowEvent e)
   {
   }

   public void windowActivated(WindowEvent e)
   {
   }

   public void windowDeactivated(WindowEvent e)
   {
   }

}