Thread: Hi there! I have a project and I need your help dear friends :D

done

Search 'jpanel background image'.

Not to sound like a jerk but most of the answer can be found through a simple google search. You mentioned it is your first year of college so take it one step at a time. It can be very daunting and discouraging to jump in and try to get everything one at once.

Now for the issues you are having. I am not to familiar with swing and gui related stuff so I can't chime in. As for the reading of a file lets look at the logic.

private void showfirstLine ()
{
  Scanner fileInput = null;
  String filename = filenameField.getText();
  File fileObject = new File(filename);
 
  if(!fileObject.exists())
    labelresult.setText("Sorry, this file does not exist. Click reset button and try again.");
  else if (!fileObject.canRead())
    labelresult.setText("That File is not Readable");
  else{
    try
    {
      fileInput = new Scanner (fileObject); // Sets up you scanner object to get data from your file
    }
    catch(FileNotFoundException e)
    {
      labelresult.setText("Error opening the file" + " " + filename);
    }
    String firstline = fileInput.nextLine(); // This line reads a line and stores it into your variable "firstline"
    labelresult.setText(firstline); // This line sets the label to the value of the variable
    fileInput.close(); // This line closes your reader
  }
}

Now what happens if you do:

firstLine = fileInput.nextLine();

Place right after you read the first line.

What do you see? Well if the file has a second line it has now set your firstLine variable to the second line in the file. So every time you call fileInput.nextLine(); it reads the next line.

What can you set up that will execute the same piece of code withouth having to write it over and over? Take a look at how loops work.

Thanks for the idea Ubiquitous and i already modified this by using loop here. but it is now showing only the last line... can anyone tell me what exactly can i do to show the entire text file??
thank you in advance

try {
            FileReader fileReader = 
                new FileReader(filename);
 
            BufferedReader bufferedReader = 
                new BufferedReader(fileReader);
 
            while((line = bufferedReader.readLine()) != null) {
                labelresult.setText(line);
            }	
 
            bufferedReader.close();			
        }

import java.io.*;
import java.util.Scanner;
import javax.swing.JFrame;
import javax.swing.JButton;
import javax.swing.JTextField;
import java.awt.Color;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Scanner;
import java.io.FileNotFoundException;
import java.awt.*;
import javax.swing.*;
import javax.swing.JLabel;
 
public class panget3 extends JFrame implements ActionListener{
public static final int WIDTH= 700;
public static final int HEIGHT = 600;
public static final int NUMBER_OF_CHAR=30;
 
JLabel labelresult;
 
private JTextField filenameField;
 
public panget3 ()
{
Scanner input = new Scanner(System.in);
setSize(WIDTH, HEIGHT);
Container contentPane = getContentPane();
 
contentPane.setBackground(Color.BLACK);
 
contentPane.setLayout(new FlowLayout());
 
JFrame frame = new JFrame ();
setTitle("A Simple File Organizer");
 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 
JButton showButton = new JButton("Show Results");
showButton.addActionListener(this);
showButton.setForeground(Color.GREEN);
showButton.setBackground(Color.BLACK);
contentPane.add(showButton);
 
JButton resetButton = new JButton("Reset");
resetButton.addActionListener(this);
resetButton.setForeground(Color.GREEN);
resetButton.setBackground(Color.BLACK);
contentPane.add(resetButton);
 
filenameField = new JTextField(NUMBER_OF_CHAR);
contentPane.add(filenameField);
filenameField.setForeground(Color.GREEN);
filenameField.setBackground(Color.BLACK);
filenameField.setText("Enter File Name Here");
 
labelresult = new JLabel ("");
labelresult.setSize(500, 400);
labelresult.setForeground(Color.YELLOW);
getContentPane().add(labelresult);
 
}
 
public void actionPerformed(ActionEvent e)
{
String actionCommand = e.getActionCommand();
if(actionCommand.equals("Show Results"))
showFile();
else if(actionCommand.equals("Reset"))
resetFields();
else 
labelresult.setText("Unexpected Error");
}
private void showFile ()
{
		String filename = filenameField.getText();
		File fileObject = new File(filename);
		String line = null;
 
if(!fileObject.exists())
labelresult.setText("Sorry, this file does not exist. Click reset button and try again.");
else if (!fileObject.canRead())
labelresult.setText("That File is not Readable");
else{
try {
            FileReader fileReader = 
                new FileReader(filename);
 
            BufferedReader bufferedReader = 
                new BufferedReader(fileReader);
 
            while((line = bufferedReader.readLine()) != null) {
                labelresult.setText(line);
            }	
 
            bufferedReader.close();			
        }
        catch(FileNotFoundException ex) {
            labelresult.setText(
                "Unable to open file");				
        }
        catch(IOException e) {
            labelresult.setText("Error reading file");			}
	}
		}
private void resetFields()
{
filenameField.setText("Enter file name here:");
labelresult.setText("");
}
public static void main (String [ ] args)
{
panget3 gui = new panget3 ();
gui.setVisible(true);
panget3 frame = new panget3 ();
}
}

Thank You so much @Mugambbo!!

Thank You so much @Mugambbo!!

I have one LAST question sir,

When I run the code in gui, this is how it looks like

sample1.jpg

How can I show it like this

sample2.jpg

it reads line by line when i am doing a code and run it in cmd,

I am almost there, thank you again!

anyone pls?? do you think it has something to do with the size of JTextArea?? i really cannot figure it. Im almost there.

i did your instructions and this is what ive got. funny, the sample text file that im trying to open is a song lyrics. haha. anyway, can you help me now sir??
how can i post it line by line like what you see below, but when i run it in gui, the text files is only showing in one line. what might be the problem here??

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\ADMIN>cd desktop

C:\Users\ADMIN\Desktop>javac Test0.java

C:\Users\ADMIN\Desktop>java Test0
Enter filename
song.txt
Againts All Odds - Mariah Carey

How can I just let you walk away,
Just let you leave without a trace?
When I stand here taking every breath with you, ooh ooh
You're the only one who really knew me at all

How can you just walk away from me
When all I can do is watch you leave?
'Cause we've shared the laughter and the pain
And even shared the tears
You're the only one who really knew me at all

So take a look at me now
Well there's just an empty space
And there's nothing left here to remind me
Just the memory of your face
Take a look at me now

Well there's just an empty space
And you coming back to me is against the odds
And that's what I've got to face, oh

I wish I could just make you turn around
Turn around and see me cry
There's so much I need to say to you
So many reasons why
You're the only one who really knew me at all

So take a look at me now
Well there's just an empty space
And there's nothing left here to remind me
Just the memory of your face

Take a look at me now
Well there's just an empty space
But to wait for you is all I can do
And that's what I've got to face

Take a good look at me now
'Cause I'll still be standing here
And you coming back to me is against the odds
And it's what I've got to face
Take a look at me now

C:\Users\ADMIN\Desktop>

Are you setting the JTextArea content to each line of text read, or are you append()ing?

Oh, and if you're using a JTextField, the append() method you probably need is not available, so I suggest you change to a JTextArea.

uhm, i realy dont know how to explain but, when run in gui he whole text file was shown but it is only one liner. like this

sample1.jpg

i want it to show like in the cmd.

Hi! ive been busy with my defense about my very simple program.. and you guys really helped me a lot!! again, thank you!