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

  1. #1
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    Default Hi there! I have a project and I need your help dear friends :D

    I am new here and this is a very simple code since I am just on my first year in college. By the way, I am very sorry if this code is absurd because honestly Im not yet familliar with all of the terms of compiler. Well, my question is How can i add a background image for this code without disappearing the button and label? I want a frame that has a background and still shows the buttons and label that I place. and how can I insert Buffered Reader in this code, this is a file organizer, but it only shows first line of a text file. I want to show the whole text file. And is it possible to also show path of the file? Thank you so much in advance for your help guys!!


    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.Graphics;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import java.util.Scanner;
    import java.io.File;
    import java.io.FileNotFoundException;
    import javax.swing.JOptionPane;
    import javax.swing.ImageIcon;
    import java.awt.*;
    import javax.swing.*;
    import javax.swing.ImageIcon;
    import javax.swing.JLabel;
    import javax.swing.JPanel;
     
    public class project 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 project ()
    {
    setSize(WIDTH, HEIGHT);
    Container contentPane = getContentPane();
    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.setText("Enter File Name Here");
     
    labelresult = new JLabel ("");
    labelresult.setSize(500, 400);
    labelresult.setForeground(Color.BLUE);
    getContentPane().add(labelresult);
     
    }
     
    public void actionPerformed(ActionEvent e)
    {
    String actionCommand = e.getActionCommand();
    if(actionCommand.equals("Show Results"))
    showfirstLine();
    else if(actionCommand.equals("Reset"))
    resetFields();
    else 
    labelresult.setText("Unexpected Error");
    }
    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);
    }
    catch(FileNotFoundException e)
    {
    labelresult.setText("Error opening the file" + " " + filename);
    }
    String firstline = fileInput.nextLine();
    labelresult.setText(firstline);
    fileInput.close();
    }
    }
    private void resetFields()
    {
    filenameField.setText("Enter file name here:");
    labelresult.setText("");
    }
    public static void main (String [ ] args)
    {
    project gui = new project ();
    gui.setVisible(true);
    project frame = new project ();
    }
    }
    Last edited by vannaj; March 10th, 2014 at 02:23 PM.


  2. #2
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    Default Re: Hi there! I have a project and I need your help dear friends :D

    Please edit your post and wrap your code with code tags:
    [code=java]
    YOUR CODE HERE
    [/code]
    to get highlighting and preserve formatting.
    If you don't understand my answer, don't ignore it, ask a question.

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

    done

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

    The code has lost its formatting. Logically Nested statements should be indented.
    If you don't understand my answer, don't ignore it, ask a question.

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

    Search 'jpanel background image'.

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

    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.

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

    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 ();
    }
    }

  8. #8
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    Default Re: Hi there! I have a project and I need your help dear friends :D

    In order that it shows all the lines in your text field, then for each iteration of your while loop, ensure you get the text currently in the field, append the next line to it by concatenation and finally, set the field with the newly formed text.
    while ((line=bufferedReader.readLine())!=null) {
    labelresult.setText(labelresult.getText()+line);
    }

    You could also use the StringBuilder or StringBuffer to execute the same task.
    Last edited by Mugambbo; March 12th, 2014 at 01:55 AM.
    Who holds the KEY to all knowledge?

  9. The Following User Says Thank You to Mugambbo For This Useful Post:

    vannaj (March 12th, 2014)

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

    Thank You so much @Mugambbo!!

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

    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!

  12. #11
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    Default Re: Hi there! I have a project and I need your help dear friends :D

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

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

    To copy the contents of the command prompt window:
    Click on Icon in upper left corner
    Select Edit
    Select 'Select All' - The selection will show
    Click in upper left again
    Select Edit and click 'Copy'

    Paste here.
    If you don't understand my answer, don't ignore it, ask a question.

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

    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>

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

    but when i run it in gui, the text files is only showing in one line.
    Where is that one line shown? What is the difference between how the code is executed when all the lines are shown as in post#13 and when only 1 line is shown?

    Which line is shown when run in gui? The first, the last or which one?
    If you don't understand my answer, don't ignore it, ask a question.

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

    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.

  17. #16
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    Default Re: Hi there! I have a project and I need your help dear friends :D

    Describe what you see in the GUI
    If all the file's lines are on one line, then you need to add a lineend character ("\n") at the end of each line to make the line go one the next line in the GUI
    If you don't understand my answer, don't ignore it, ask a question.

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

    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.

  19. #18
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    Default Re: Hi there! I have a project and I need your help dear friends :D

    whole text file was shown but it is only one line
    See post#16
    Add a "\n" to the end of each line
    If you don't understand my answer, don't ignore it, ask a question.

  20. #19
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    Default Re: Hi there! I have a project and I need your help dear friends :D

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

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