I am a student really struggling with Java and needless to say, I am pretty isolated from anyone who gives a care enough to help me, I am on my 8th week and really struggling with GUI's I have some code written, but the gui will not display, I am defintely missing something in my code....can someone help me?? I used our schools Java lab and the person there just gave me some code to use, but I want to figure this out. I have seen many students here post their Inventory5 program, but I want to use MY code anyways here is what I have so far
//This is an inventory program that stores
//and lists the inventory of Coaxial Connector-fittings
//Author:
//Class: IT215
//Date: October 17, 2009
package inventory;
import javax.swing.*;
import javax.swing.JFrame; // provides basic window features
import javax.swing.JLabel; // displays text and images
import javax.swing.JButton;
import java.awt.*;
import javax.swing.JTextPane;
import java.awt.FlowLayout;
import java.awt.BorderLayout;
import java.awt.GridLayout;
import javax.swing.ImageIcon;
import javax.swing.Icon;
public class Main
{//Start of class Main
//Main method begins program execution
public static void main(String[] args)
{//Begin main method
//Welcome message
System.out.println("Welcome to the Inventory Program!!\n");
//Create object or instance of classes Fittings and Inventory
MetalFittings Fittings;
Inventory myinv = new Inventory (3);
//Assign values to variables in array
Fittings = new MetalFittings("RG-06",10,34,25.66, "Anodized Titanium\n");
myinv.add (Fittings, 0);
Fittings = new MetalFittings("RG-59",20,28,18.33, "Aluminum\n");
myinv.add (Fittings, 1);
Fittings = new MetalFittings("RG-11",30,56,32.21, "Brass\n");
myinv.add (Fittings, 2);
//Sort array elements
myinv.sort();
//Output array elements
for (int i = 0; i < 3; i++)
{
System.out.println(myinv.get(i));
}
//Get and display total assets of inventory (price * stock)
System.out.printf("\nTotal of Assets in Inventory:$%.2f\n\n", myinv.assets());
}//End method main
}//End class Main
class Fittings
{//Start of class Fittings
private String size;//size variable
private int item_number;//item number variable
private int stock;//stock variable
private double price;//price variable
//Constructor with parameters
public Fittings(String f_size, int f_item_number, int f_stock, double f_price)
{
size = f_size;
item_number = f_item_number;
stock = f_stock;
price = f_price ;
}//End default constructor
//Method to set size to memory
public void setsize(String fsize)
{
size = fsize;
}//End method setsize
//Method to get size from memory
String getsize()
{
return size;
}//End method get size
//Method to set item_number to memory
public void setitem_number(int f_item_number)
{
item_number = f_item_number;
}//End method set item_number
//Method to get item_number from memory
int getitem_number()
{
return item_number;
}//End method getitem_number
//Method to set stock to memory
public void setstock(int f_stock)
{
stock = f_stock;
}//End method setstock
//Method to get stock from memory
int getstock()
{
return stock;
}//End method getstock
//Method to set price to memory
public void setprice(double f_price)
{
price = f_price;
}//End method setprice
//Method to get price from memory
double getprice()
{
return price;
}//End method getprice
//Method to set total_assets (calculated result)
public double total_assets()
{
return stock * price;
}
//Print format displayed in array
public String toString()
{
return String.format("Fitting Type:%s Item Number:%d Fittings in Stock:%d Price per Fitting:$%.2f",
size, item_number, stock, price, total_assets());
}
}//End of class Fittings
//Sub-class of Fittings
class MetalFittings extends Fittings
{//Start of class MetalFittings
//Variable metal
private String metal;
//Constructor
public MetalFittings(String f_size,int f_item_number ,int f_stock, double f_price,String metal )
{
super (f_size, f_item_number, f_stock, f_price);
this.metal = metal;
}//End constructor
//Method to return "metal"
public String getmetal()
{
return metal;
}
public double total_assets()
{
return super.total_assets()*1.05;
}
//Method to apply fee
public double stock_fee()
{
return super.total_assets()*.05;
}//End stock_fee method
//Method to set "metal"
public void setmetal(String metal)
{
this.metal = metal;
}//End method to set "metal"
//Method to add metal and fee to array
public String toString()
{
return super.toString()+ String.format(" Restocking fee: $%.2f Metal: %-20s",
stock_fee(), metal);
}//End tostring methos
}//End class MetalFittings
class Inventory
{//Start of class Inventory
double asset;
String tostring;
private Fittings[] list;
public Fittings[] getArray()
{
return list;
}
//Constructor
public Inventory (int size)
{
list = new Fittings[size];
}
//Method to total indvidual "total_assets" calculations
public double assets()
{
double asset = 0.0;
for (int i = 0; i < list.length; i++)
{
asset += list[i].total_assets();
}
//Return asset variable
return asset;
}
//Add item to array
public void add(Fittings d, int p)
{
list [p] = d;
}
//Get item for array
public Fittings get(int i)
{
return list[i];
}
//Sort by fitting-size
public void sort()
{ //Bubble sort
int n = list.length;
for (int search = 1; search < n; search++){
for (int i= 0; i < n-search; i++){
if (list[i].getsize() . compareToIgnoreCase (list[i=1].getsize()) > 0){
//Method to swap
Fittings temp = list[i];
list[i] = list[i+1];
list [i+1] = temp;
}
}
}
}
}//End of class Inventory
class gui extends JFrame
{
private JLabel labelA;
private JLabel labelB;
private JLabel labelC;
private JLabel labelD;
private JLabel labelE;
private JLabel labelF;
private JLabel labelG;
private JLabel labelH;
public gui()
{
super("Fittings Inventory");
setLayout (new FlowLayout());
labelA = new JLabel ("Size");
add(labelA);
labelB = new JLabel ("Item Number");
add(labelB);
labelC = new JLabel ("Fittings in stock");
add(labelC);
labelD = new JLabel("Price per Fitting");
add(labelD);
labelE = new JLabel ("Metal");
add(labelE);
labelF = new JLabel ("Stock fee");
add(labelF);
labelG = new JLabel ("Total assets in inventory");
add(labelG);
Icon icon = new ImageIcon(getClass().getResource(""));
labelH = new JLabel(icon);
add(labelH);
}
class outlabels extends JPanel
{
public outlabels()
{
JPanel Outlabels = new JPanel();
this.add (Outlabels);
this.add(labelA);
this.add(labelB);
this.add(labelC);
this.add(labelD);
this.add(labelE);
this.add(labelF);
this.add(labelG);
this.add(labelH);
}
}
class button extends JPanel
{
JPanel button = new JPanel();
JButton nextbut = new JButton("NEXT");
JButton backbut = new JButton("BACK");
JButton donebut = new JButton("DONE");
}
JTextPane newpane = new JTextPane();
{
setLayout (new GridLayout());
setLayout (new BorderLayout());
JPanel mypanel = new JPanel();
JScrollPane scroll = new JScrollPane(newpane, JScrollPane.HORIZONTAL_SCROLLBAR_NEVER,
JScrollPane.VERTICAL_SCROLLBAR_NEVER);
scroll.setPreferredSize(new Dimension(250, 400));
newpane.setEditable(false);
mypanel.add(scroll);
scroll.setVisible (true);
Container c = getContentPane();
c.setLayout(new BorderLayout());
newpane.setLayout(new BorderLayout());
newpane.setLayout (new GridLayout(6,3));
newpane.setLayout(new FlowLayout());
c.setVisible(true);
mypanel.setLayout(new FlowLayout(FlowLayout.CENTER));
this.add(newpane, BorderLayout.CENTER);
this.add(newpane, BorderLayout.SOUTH);
scroll.setVisible(true);
}
}
Sorry for the long code; I need to create a next, previous and last button so the user can move through the array elements (if clicking on first they move to the 1st array element, next would be incremented to the next and last would goto the last element ad the user should be able to loop through the array (clicking on next while on the last array element they would move to first vice versa)
I really want to learn Java, but starting to feel too stupid!
