Adding a GUI

[nexcompac]

Ok, I am working on an inventory program and this is where I am at thus far. I seem to be getting two errors that I can not figure out. I will post the errors at the end of the code.

import java.util.*;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
 
 
 
public class Inventory extends JFrame// Main class
{
 
 
    private JLabel prodNameLabel;
    private JLabel numberLabel;
    private JLabel unitLabel;
    private JLabel priceLabel;
    private JLabel featureLabel;
    private JLabel valueLabel;
    private JLabel rstkLabel;
    private JLabel totalLabel;
    private JTextField prodNameField;
    private JTextField numberField;
    private JTextField unitField;
    private JTextField priceField;
    private JTextField featureField;
    private JTextField valueField;
    private JTextField rstkField;
    private JTextField totalField;
    private JButton firstBtn;
    private JButton prevBtn;
    private JButton nextBtn;
    private JButton lastBtn;
    private JPanel buttonJPanel;
    private JPanel fieldJPanel;
    private JPanel fontJPanel;
    private List<ProductAdd> nwProduct;
    private int currProd = 0;
    private double total; // variable for total inventory
 
 
 
    public Inventory()
    {
        initComponents();
    }
 
    private void initComponents()
    {
        prodNameLabel = new JLabel("Product Name:");
        numberLabel = new JLabel("Item Number:");
        unitLabel = new JLabel("In Stock:");
        priceLabel = new JLabel("Each Item Cost:");
        featureLabel = new JLabel("Type of Item:");
        valueLabel = new JLabel("Value of Item Inventory:");
        rstkLabel = new JLabel("Cost to Re-Stock Item:");
        totalLabel = new JLabel("Total Value of Inventory:");
 
        firstBtn = new JButton("First");
        prevBtn = new JButton("Previous");
        nextBtn = new JButton("Next");
        lastBtn = new JButton("Last");
 
        prodNameField = new JTextField();
        prodNameField.setEditable(false);
        numberField = new JTextField();
        numberField.setEditable(false);
        unitField = new JTextField();
        unitField.setEditable(false);
        priceField = new JTextField();
        priceField.setEditable(false);
        featureField = new JTextField();
        featureField.setEditable(false);
        valueField = new JTextField();
        valueField.setEditable(false);
        rstkField = new JTextField();
        rstkField.setEditable(false);
        totalField = new JTextField();
        totalField.setEditable(false);
 
        prodNameLabel.setSize(200, 20);
        numberLabel.setSize(200, 20);
        unitLabel.setSize(200, 20);
        priceLabel.setSize(200, 20);
        featureLabel.setSize(200, 20);
        valueLabel.setSize(200, 20);
        rstkLabel.setSize(200, 20);
        totalLabel.setSize(200, 20);
 
        prodNameField.setSize(100, 20);
        numberField.setSize(100, 20);
        unitField.setSize(100, 20);
        priceField.setSize(100, 20);
        featureField.setSize(100, 20);
        valueField.setSize(100, 20);
        rstkField.setSize(100, 20);
        totalField.setSize(100, 20);
 
        buttonJPanel = new JPanel(); // set up panel
        buttonJPanel.setLayout( new GridLayout(1, 4)); //set layout
        // add buttons to buttonJPanel
        buttonJPanel.add(firstBtn);
        buttonJPanel.add(prevBtn);
        buttonJPanel.add(nextBtn);
        buttonJPanel.add(lastBtn);
 
 
 
    }
    public static void main( String args[])
    {
      product[] myProduct = new product[5];
      //Company[] myCompany = new Company[5];
 
        product p1 = new Company("Mad Dash", 20003, 5, 30, "EIDOS");
        product p2 = new Company("Fuzion Frenzy", 74512, 2, 10, "MicroSoft");
        product p3 = new Company("Time Splitters 2", 20009, 3, 45, "EIDOS");
        product p4 = new Company("Night Caster", 74522, 8, 5, "MicroSoft");
        product p5 = new Company("Lego Star Wars II", 32976, 1, 50, "LucasArts");
 
        myProduct[0] = p1;
        myProduct[1] = p2;
        myProduct[2] = p3;
        myProduct[3] = p4;
        myProduct[4] = p5;
 
        double totalValue = 0.0;
 
        for (int c=0; c < 5; c++)
        {
            totalValue = totalValue + myProduct[c].itemCalculate();
        }
 
        Arrays.sort(myProduct); // function used to sort arrays
 
        for(product p: myProduct)
        {
            System.out.println(p);
            System.out.println();
        }
       System.out.println("Total Inventory value is: $"+totalValue);
 
   } //end main
 
} //end Inventory
 

Here are the two errors that I recieve

C:\Users\Brian\Desktop\Java Inventory program\Inventory.java:35: cannot find symbol
symbol  : class list
location: class Inventory
    private list<ProductAdd> nwProduct;
            ^
C:\Users\Brian\Desktop\Java Inventory program\Inventory.java:35: cannot find symbol
symbol  : class ProductAdd
location: class Inventory
    private list<ProductAdd> nwProduct;
                 ^
2 errors
 
Tool completed with exit code 1
 
 

Can not figure out why this will not compile... What am I missing.

[madhoriya22]

C:\Users\Brian\Desktop\Java Inventory program\Inventory.java:35: cannot find symbol
symbol : class list
location: class Inventory
private list<ProductAdd> nwProduct;
^
C:\Users\Brian\Desktop\Java Inventory program\Inventory.java:35: cannot find symbol
symbol : class ProductAdd
location: class Inventory
private list<ProductAdd> nwProduct;
^
2 errors

Tool completed with exit code 1


Can not figure out why this will not compile... What am I missing.

Hi,
luk at ur first error...compiler is not able to find symbol *list*...I think it should be *List*.
Same problem can be in second error also...check for ProductAdd..Is it the right name. check for spelling also..

thanks and regards,
madhoriya22

[nexcompac]

I tried both ways with the capitols. Still got the same errors.

[madhoriya22]

I tried both ways with the capitols. Still got the same errors.

Hi,
Where are you using this List<ProductAdd> nwProduct in ur program?

thanks and regards,
madhoriya22.

[praveen2gupta]

Hi
private List<ProductAdd> nwProduct declaration is wrong
use following
private List nwProduct;

[nexcompac]

ok, changed that line of code to read what you sugested and here are the error codes.

C:\Users\Brian\Desktop\Java Inventory program\Inventory.java:35: reference to List is ambiguous, both class java.awt.List in java.awt and class java.util.List in java.util match
    private List nwProduct;
            ^
1 error
 
Tool completed with exit code 1
 

What is ment by where is my refrence?

[madhoriya22]

ok, changed that line of code to read what you sugested and here are the error codes.

C:\Users\Brian\Desktop\Java Inventory program\Inventory.java:35: reference to List is ambiguous, both class java.awt.List in java.awt and class java.util.List in java.util match
    private List nwProduct;
     ^
1 error
 
Tool completed with exit code 1
 

What is ment by where is my refrence?

Hi,
where u have initialized ur List? Compiler is not able to differentiate that Is it a AWT List or util List.

Thanks and regards,
madhoriya22.

[nexcompac]

Ok, so I removed the line to work backwards to move forward. Now, it complies but the GUI does not show up. When I run the program it goes to the comand prompt.

import java.util.*;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.JFrame; // provides basic window features
import javax.swing.JLabel; // displays text and images
import javax.swing.SwingConstants; // common constants used with Swing
import javax.swing.Icon; // interface used to manipulate images
import javax.swing.ImageIcon; // loads images
 
 
 
public class Inventory extends JFrame// Main class
{
 
 
    private JLabel prodNameLabel;
    private JLabel numberLabel;
    private JLabel unitLabel;
    private JLabel priceLabel;
    private JLabel featureLabel;
    private JLabel valueLabel;
    private JLabel rstkLabel;
    private JLabel totalLabel;
    private JTextField prodNameField;
    private JTextField numberField;
    private JTextField unitField;
    private JTextField priceField;
    private JTextField featureField;
    private JTextField valueField;
    private JTextField rstkField;
    private JTextField totalField;
    private JButton firstBtn;
    private JButton prevBtn;
    private JButton nextBtn;
    private JButton lastBtn;
    private JPanel buttonJPanel;
    private JPanel fieldJPanel;
    private JPanel fontJPanel;
    private int currProd = 0;
    private double total; // variable for total inventory
 
 
 
    public Inventory()
    {
        initComponents();
    }
 
    private void initComponents()
    {
        prodNameLabel = new JLabel("Product Name:");
        numberLabel = new JLabel("Item Number:");
        unitLabel = new JLabel("In Stock:");
        priceLabel = new JLabel("Each Item Cost:");
        featureLabel = new JLabel("Type of Item:");
        valueLabel = new JLabel("Value of Item Inventory:");
        rstkLabel = new JLabel("Cost to Re-Stock Item:");
        totalLabel = new JLabel("Total Value of Inventory:");
 
        firstBtn = new JButton("First");
        prevBtn = new JButton("Previous");
        nextBtn = new JButton("Next");
        lastBtn = new JButton("Last");
 
        prodNameField = new JTextField();
        prodNameField.setEditable(false);
        numberField = new JTextField();
        numberField.setEditable(false);
        unitField = new JTextField();
        unitField.setEditable(false);
        priceField = new JTextField();
        priceField.setEditable(false);
        featureField = new JTextField();
        featureField.setEditable(false);
        valueField = new JTextField();
        valueField.setEditable(false);
        rstkField = new JTextField();
        rstkField.setEditable(false);
        totalField = new JTextField();
        totalField.setEditable(false);
 
        prodNameLabel.setSize(200, 20);
        numberLabel.setSize(200, 20);
        unitLabel.setSize(200, 20);
        priceLabel.setSize(200, 20);
        featureLabel.setSize(200, 20);
        valueLabel.setSize(200, 20);
        rstkLabel.setSize(200, 20);
        totalLabel.setSize(200, 20);
 
        prodNameField.setSize(100, 20);
        numberField.setSize(100, 20);
        unitField.setSize(100, 20);
        priceField.setSize(100, 20);
        featureField.setSize(100, 20);
        valueField.setSize(100, 20);
        rstkField.setSize(100, 20);
        totalField.setSize(100, 20);
 
        buttonJPanel = new JPanel(); // set up panel
        buttonJPanel.setLayout( new GridLayout(1, 4)); //set layout
        // add buttons to buttonJPanel
        buttonJPanel.add(firstBtn);
        buttonJPanel.add(prevBtn);
        buttonJPanel.add(nextBtn);
        buttonJPanel.add(lastBtn);
 
 
 
    }
    public static void main( String args[])
    {
      product[] myProduct = new product[5];
      //Company[] myCompany = new Company[5];
 
        product p1 = new Company("Mad Dash", 20003, 5, 30, "EIDOS");
        product p2 = new Company("Fuzion Frenzy", 74512, 2, 10, "MicroSoft");
        product p3 = new Company("Time Splitters 2", 20009, 3, 45, "EIDOS");
        product p4 = new Company("Night Caster", 74522, 8, 5, "MicroSoft");
        product p5 = new Company("Lego Star Wars II", 32976, 1, 50, "LucasArts");
 
        myProduct[0] = p1;
        myProduct[1] = p2;
        myProduct[2] = p3;
        myProduct[3] = p4;
        myProduct[4] = p5;
 
        double totalValue = 0.0;
 
        for (int c=0; c < 5; c++)
        {
            totalValue = totalValue + myProduct[c].itemCalculate();
        }
 
        Arrays.sort(myProduct); // function used to sort arrays
 
        for(product p: myProduct)
        {
            System.out.println(p);
            System.out.println();
        }
       System.out.println("Total Inventory value is: $"+totalValue);
 
   } //end main
 
} //end Inventory
 
 

import java.util.*;
 
public class Company extends product implements Comparable
{
    private String developer;
    //double total;
 
    /** Creates a new instance of Company */
    public Company()
    {
        super();
        String developer ="";
        //total =0.0;
    }
    public Company(String productName, int itemNumber, double unitProduct, double priceProduct, String developer)
    {
        super(productName, itemNumber, unitProduct, priceProduct);
        this.developer = developer;
    }
 
        public void setDeveloper( String developer)
         {
            this.developer = developer;
         }
        public String getDeveloper()
         {
            return developer;
         }
 
        public double itemCalculate()
        {
            return (super.itemCalculate()*.05)+super.itemCalculate();
        }
 
        public int compareTo (Object o) // use the compareTo method
        {
            product p = (product)o;
            return productName.compareTo(p.getProductName());
        }
 
        public String toString()
        {
         return super.toString()+ "\nCompany: "+ developer +"\nPrice with restock fee: $"+itemCalculate();
        }
}
 
 
 
 
 

import java.util.*; // program uses any class available
 
class product implements Comparable
{
   public String productName; // class variable that stores the item name
   private int itemNumber; // class variable that stores the item number
   private double unitProduct; // class variable that stores the quantity in stock
   private double priceProduct; // class variable that stores the item price
 
    /** Creates a new instance of product */
    public product() // Constructor for Product class
     {
        productName = "";
        itemNumber = 0;
        unitProduct = 0.0;
        priceProduct = 0.0;
     }
    public product( String productName, int itemNumber, double unitProduct, double priceProduct) // Constructor for myProduct class
    {
        this.productName = productName;
        this.itemNumber = itemNumber;
        this.unitProduct = unitProduct;
        this.priceProduct = priceProduct;
    }
 
      public void setProductName(String name)  // Method to set the item name
       {
         this.productName = productName;
       }
      public String getProductName()  // Method to get the item name
       {
         return productName;
       }
      public void setItemNumber(int number)  // Method to set the item number
       {
         this.itemNumber = itemNumber;
       }
      public int getItemNumber()  // Method to get the item name
       {
         return itemNumber;
       }
       public void setUnitProduct(double unit)  // Method to set the item number
       {
         this.unitProduct = unitProduct;
       }
      public double getUnitProduct()  // Method to get the item name
       {
         return unitProduct;
       }
       public void setPriceProduct(double price)  // Method to set the item number
       {
         this.priceProduct = priceProduct;
       }
      public double getPriceProduct()  // Method to get the item name
       {
         return priceProduct;
       }
 
// Calculation method
  public double itemCalculate()
   {
        return unitProduct * priceProduct; // multiply for total for each item
 
   } // end calculation
  public int compareTo (Object o) // use the compareTo method
    {
      product p = (product)o;
         return productName.compareTo(p.getProductName());
    }
 
  public String toString() // displays products
  {
      return "Title: "+productName+
              "\nBarcode: "+itemNumber+
              "\nNumber of Xbox games: "+(int)unitProduct+
              "\nPrice: $"+priceProduct+
              "\nTotal: $"+itemCalculate();
   } // end toString
 
 
}//end class Supplies
 
 

[madhoriya22]

Ok, so I removed the line to work backwards to move forward. Now, it complies but the GUI does not show up. When I run the program it goes to the comand prompt.

Hi,
Declare ur list like this .. to remove the ambiguity

 
private java.awt.List nwProduct;
private void initComponents()
    {
nwProduct = new java.awt.List();
 

GUI is not creating bcoz u r not creating any object of ur inventory class in main method.
thanks and regards,
madhoriya22