Thread: Working on reading / editing file data for my program.. Need HELP!

Okay so I have been making a lot of changes and upgrades to my program as I continue to design it. Currently I am trying to implement a lot of features, which I am going to tackle 1 at a time. As of right now this is reading and displaying from a .txt file.


I need a little direction and clarification. I have been studying a lot on reading and writing to a .txt file.

Right now my program currently runs and operates fine.

I want my program to display the information from a .txt file instead of my Object array. This I have figured out somewhat. I did not provide the .txt file, as it may not have been needed. However I have my program to the point where it will read from a text file.

This I have not implemented into my GUI yet. This is what I need some direction with.. Essentially I need help on where to go from here.. I can read information from the .txt but how can I get the program to display this information in my GUI?

Currently I need this information of this format to display..
Red Hot Chili Peppers Alternative 1 35 16.99 (CDName, Genre, ID#, Stock, Price)

From my understanding I can simply have spaces in between my information to display. but I do not know how to make it so it will display Red Hot Chili Peppers as it has spaces (it wants to call Red as one then Hot, then Chili, etc...)


HERE IS WHAT I SPECIFICALLY NEED>>>> tips, tricks, and a direction to head. I beleive I am on the right track from here but perhaps need a bit of clarification on how to work this into my program.



*** IMPORTANT QUESTION - PLEASE ANSWER ***

This change to my program seems as if I may be able to delete not only my Object CD array but all the getters and setters as well?

OR

Will I still need all of that?



** CDs Class (contains main method)

package inventory;
 
import javax.swing.*;
 
import java.util.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.lang.*;
 
 
 
 
 
public class CDs extends JFrame{
private static final long serialVersionUID = 1L; // serial version
 
 
		//// this area controls the open, add, and closing of the file
		private Scanner x;
 
		public void openFile(){
			try{
				x = new Scanner(new File("test.txt"));
			}catch(Exception e){
				System.out.println("An error occured.");
			}
		}// end openFile
 
		public void readFile(){
			while(x.hasNext()){
				String a = x.next();
				String b = x.next();
				String c = x.next();
				String d = x.next();
                                String e = x.next();
				System.out.printf("%s %s %s %s %s\n", a, b, c, d, e);
			}
		}
		public void closeFile(){
			x.close();
		}
 
		/// end file open, add, and close
 
 
 
// declares var for currentIndex for button functionality
	public int currentIndex = 0;
	private JLabel labelName;
	private JLabel labelID;
	private JLabel labelStock;
	private JLabel labelGenre;
	private JLabel labelPrice;
	private JLabel labelReStock;
	private JLabel labelFval;
	private JLabel labelTval;
	private InvMore[] CD;
	private JLabel imageLabel;
 
 
 
 
 
	public CDs(){// sets the GUI 
 
 
		CD = new InvMore[5]; // creates the variable CD for the array
		/// CD inventory objects
		CD[0] = new InvMore("Red Hot Chili Peppers", "Alternative", 1, 35, 16.99);
		CD[1] = new InvMore("Nirvana", "Classic Rock", 2, 25, 16.99);
		CD[2] = new InvMore("Styx", "Classic Rock", 3, 28, 16.99);
		CD[3] = new InvMore("Jay Z", "Hip Hop/Rap", 4, 37, 16.99);
		CD[4] = new InvMore("Nelly", "Hip Hop/Rap", 5, 32, 16.99);
 
 
 
 
		// sets the values for the window
 
		setTitle("Your Inventory Program");
		setSize(600,550);
		setLocationRelativeTo(null);
		setDefaultCloseOperation(EXIT_ON_CLOSE);
 
		JPanel panel1 = new JPanel();
		getContentPane().add(panel1);
		panel1.setLayout(new FlowLayout(FlowLayout.CENTER));
		// creates image logo
		imageLabel = new JLabel();// creates the label for the logo
		imageLabel.setIcon(new ImageIcon("D:\\UOP111\\JavaWork\\inventory\\src\\inventory\\TMDlogo.png")); // found out that you need to have the  \\ when calling the directory
		panel1.add(imageLabel);
 
 
 
 
		//creates the panel and layout
		JPanel panel = new JPanel();
		getContentPane().add(panel, BorderLayout.NORTH);
		panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));
 
		/// fields numbered 1-8 for easy matching with other functions and adding
		labelName = new JLabel ("CD Name: ");//1
		labelName.setFont(new Font("Serif", Font.PLAIN, 14));
		panel.add(labelName);//1
 
		labelID = new JLabel ("CD ID: ");//2
		labelID.setFont(new Font("Serif", Font.PLAIN, 14));
		panel.add(labelID);//2
 
		labelGenre = new JLabel ("CD genre: ");//3
		labelGenre.setFont(new Font("Serif", Font.PLAIN, 14));
		panel.add(labelGenre);//3
 
		labelStock = new JLabel ("Stock amount: ");//4
		labelStock.setFont(new Font("Serif", Font.PLAIN, 14));
		panel.add(labelStock);//4
 
		labelPrice = new JLabel ("CD Price: ");//5
		labelPrice.setFont(new Font("Serif", Font.PLAIN, 14));
		panel.add(labelPrice);//5
 
		labelReStock = new JLabel ("ReStock value: ");//6
		labelReStock.setFont(new Font("Serif", Font.PLAIN, 14));
		panel.add(labelReStock);//6
 
		labelFval = new JLabel ("CD stock value: ");//7
		labelFval.setFont(new Font("Serif", Font.PLAIN, 14));
		panel.add(labelFval);//7
 
 
 
		/// creates the buttons
		JButton previous = new JButton("Previous");
		panel.add(previous);
		JButton next = new JButton("Next");
		panel.add(next);
 
 
 
 
 
 
 
 
 
 
		//**** working on implementing this **** 
		labelTval = new JLabel ("Total CD inventory value: ");//8
		labelTval.setFont(new Font("Serif", Font.ITALIC, 14));
 
		panel.add(labelTval);//8
 
 
 
 
		///// these are the active listeners for the button functions
			previous.addActionListener(new ActionListener() {
				@Override
				public void actionPerformed(ActionEvent e) {
					showPrevious();
				}
			});
 
		next.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				showNext();
			}
		});
 
 
 
 
 
		/// calls the GUI display for object results
		updateGUI();
		InvMore item = CD[currentIndex];
		labelTval.setText(String.format("The Total CD Inventory Value: $%.2f", item.gettotValue(CD)));//8
 
 
	}//end GUI
 
 
 
 
 
 
	public static void main(String[] args){ // start main
		new CDs().setVisible(true); // this calls the GUI
 
 
		// calls the file open, add, and close
 
		CDs g = new CDs();
 
		g.openFile();
		g.readFile();
		g.closeFile();
 
		// end the file calls
 
	}// end main
 
 
 
 
 
 
 
	public void updateGUI() {
		InvMore item = CD[currentIndex];
			labelName.setText(String.format("Name: %s",item.getName()));//1
			labelID.setText(String.format("ID: %s",item.getID()));//2
			labelGenre.setText(String.format("Genre: %s",item.getGenre()));//3
			labelStock.setText(String.format("In-Stock: %s",item.getStock()));//4
			labelPrice.setText(String.format("Price: $%.2f",item.getPrice()));//5
			labelReStock.setText(String.format("ReStock Value: $%.2f",item.getReStock()));//6
			labelFval.setText(String.format("Total Stock Value: $%.2f",item.getValStock()));//7
 
	}// ends updateGUI
 
 
 
	/// methods for the buttons
	private void showNext() {  // method for the next button
		if (currentIndex < CD.length - 1) {
			currentIndex++;
			updateGUI();
		}
	}
	private void showPrevious() { // method for the previous button
		if (currentIndex > 0) {
			currentIndex--;
			updateGUI();
		}
	}
 
 
 
}// end class

** Inventory Class

package inventory;
 
public class Inventory implements Comparable<Inventory>{
 
 
 
		// variables
		public String Name;
		public int ID;
		public int Stock;
		public double Price;
		public double ReStock;
		public String Genre;
		public double cdVal;
		public double totValue;
 
 
 
			public Inventory(String Name, String Genre, int ID, int Stock, double Price) { // constructor
				this.Name = Name;
				this.ID = ID;
				this.Stock = Stock;
				this.Price = Price;
 
			}// end constructor
 
 
			public void setName (String Name){ // setter for name
				this.Name = Name;
			} // end setter
			public String getName(){ // getter for name
				return Name;
			} // end getter
 
			public void setID (int ID){ // setter for id
				this.ID = ID;
			}// end setter
			public int getID(){ // getter for ID
				return ID;
			} // end getter
 
 
			public void setStock (int Stock){ // setter for stock
				this.Stock = Stock;
			}// end setter
			public int getStock(){ // getter for stock
				return Stock;
			}// end getter
 
 
			public void setPrice (double Price){ // setter for stock
				this.Price = Price;
			}// end setter
			public double getPrice(){ // getter for stock
				return Price;
			}// end getter
 
 
			public double getValStock(){ // getter for stock
				return (Price * .05) * Stock + (Stock * Price);
			}// end getter
 
 
			/// this WAS the sort method used for my program before it needed a GUI
			public int compareTo(Inventory other) {
				if (getName().compareTo(other.getName()) > 0){
					return 1;
				}else if (getName().compareTo(other.getName()) < 0){
					return -1;
				}else
					return 0;
			}
 
 
 
 
 
	}// end class

** InvMore Class

package inventory;
 
public class InvMore extends Inventory {
	public Object testValue;
	public InvMore(String Name, String Genre, int ID, int Stock, double Price) {
		super(Name, Genre, ID, Stock, Price);
		this.Genre = Genre;
		this.ReStock = ReStock;	
		this.cdVal = cdVal;
		this.totValue = totValue;
 
 
	}
 
	public void setGenre (String Genre){ // setter for name
		this.Genre = Genre;
	} // end setter
	public String getGenre(){ // getter for name
		return Genre;
	} // end getter
 
	public double getReStock(){ // getter for stock
		return (Price * .05);
	}// end getter
 
 
	public void settotValue (){
		this.totValue = totValue;
	}
	public double gettotValue (InvMore[] CD){
 
		double totValue = 0;
 
		for (int i = 0; i < CD.length;) {
 
			totValue = totValue + getValStock();
 
			i++;
		}
 
		return totValue;
	}
}

What is the existing format of the text file? Can you show a couple lines? Are you in control of the format of the text file? It sounds like you are, and if that's true, you should delimit the data so that it can be read and separated into the desired parts as easily and reliably as possible.

well my text formatting of my file would look just like I have below

Red Hot Chili Peppers Alternative 1 20 16.99
Nirvana Alternative 2 20 16.99
etc....


I would like to use the structure that andbin had there. I would much rather use a format like
Red Hot Chili Peppers; Alternative; 1; 20; 16.99;
Nirvana; Alternative; 2; 20; 16.99;

as stated it is much easier to manage and it makes more sense for the programming aspect. The biggest deal is that I do not understand how to make my program read a file like that...