السلام عليكم
أنا ركبت الواجهه للكود واجهتني مشكله أرجو المساعده ....وشكرا
import java.util.Calendar;
import java.util.Scanner;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JScrollPane;
import java.awt.Component;
import java.awt.FlowLayout;
import java.awt.HeadlessException;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.ImageIcon;
import java.util.*;
import java.util.Scanner;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
import java.text.*;
class Link {
public int ID;
public int qui;
public String Items;
public int price; // data item
public Link next; // next link in list
// -------------------------------------------------------------
public Link(int a, int b, String Ite, int p) // constructor
{
ID = a;
qui = b; // constructor
Items = Ite;
price = p;
} // set to null)
// -------------------------------------------------------------
public void displayLink1()
// display ourself
{
System.out.println("\t" + Items + "\t\t{" + price + "}");
System.out.println("");
}
public void displayLink2()
// display ourself
{
System.out.print("\t" + ID);
System.out.print("\t" + qui);
System.out.print("\t" + Items);
System.out.println("\t\t{" + price + "}");
}
}
// //////////////////////////////////////////////////////////////
class LinkList {
private Link first; // ref to first link on list
// -------------------------------------------------------------
public LinkList() // constructor
{
first = null; // no links on list yet
}
// -------------------------------------------------------------
public boolean isEmpty() // true if list is empty
{
return (first == null);
}
// -------------------------------------------------------------
// insert at start of list
public String insertFirst(int ID, int SD, String Item, int pri) { // make
// new
// link
Link newLink = new Link(ID, SD, Item, pri);
newLink.next = first; // newLink --> old first
first = newLink; // first --> newLink
return first.ID + " " + first.qui + " " + first.Items + "{"
+ first.price + "}";
}
// -------------------------------------------------------------
public Link find(int key) // find link with given key
{ // (assumes non-empty list)
Link current = first; // start at 'first'
while (current.ID != key) // while no match,
{
if (current.next == null) // if end of list,
return null; // didn't find it
else
// not end of list,
current = current.next; // go to next link
}
return current; // found it
}
// /////////////////////////////////////
public Link delete(int key) // delete link with given key
{ // (assumes non-empty list)
Link current = first; // search for link
Link previous = first;
while (current.ID != key) {
if (current.next == null)
return null; // didn't find it
else {
previous = current; // go to next link
current = current.next;
}
} // found it
if (current == first) // if first link,
first = first.next; // change first
else
// otherwise,
previous.next = current.next; // bypass it
return current;
}
// -------------------------------------------------------------
public void displayList1() {
JFrame frame = new JFrame("WELCOME {ELECTRONIC SYSTEM OF CASHER]");
String backupD="" ;
// show a joptionpane dialog using showMessageDialog
JOptionPane.showMessageDialog(frame,
"\n\n\t\tThe Menue Of our Canteen \n\n " + backupD + "'.",
"CASHER SYSTEM",
JOptionPane.INFORMATION_MESSAGE);
Link current = first; // start at beginning of list
while (current != null) // until end of list,
{
current.displayLink1(); // print data
current = current.next;
// move to next link
}
System.out.println("");
}
public void displayList2() {
String backupD1="" ;
JFrame frame = new JFrame("WELCOME {ELECTRONIC SYSTEM OF CASHER]");
// show a joptionpane dialog using showMessageDialog
JOptionPane.showMessageDialog(frame,
"\n\n\t\tThe Menue Of our Canteen \n\n \n\t ID \tQuin \tItem name \t\t\t price "+ backupD1 + "'.",
"CASHER SYSTEM",
JOptionPane.INFORMATION_MESSAGE);
Link current = first; // start at beginning of list
while (current != null) // until end of list,
{
current.displayLink2(); // print data
current = current.next;
// move to next link
}
System.out.println("");
}
// -------------------------------------------------------------
} // end class LinkList
// //////////////////////////////////////////////////////////////
class LinkListApp {
public static void main(String[] args) {
LinkList theList = new LinkList();
// make new list
int t = 0;
int e = 0;
int a = 0;
int b = 0;
int SENTINEL = 54321;
String str;
int password = 0;
int counter = 5;
while (counter != 0 && password != SENTINEL)
{
str = JOptionPane.showInputDialog("Enter Password");
password = Integer.parseInt(str);
if(password == SENTINEL)
{
JOptionPane.showMessageDialog(null, "CORRECT");
}
else if(password!=SENTINEL)
{
JOptionPane.showMessageDialog(null, "Wrong try again");
}
counter = counter-1;
if (counter == 0)
{
JOptionPane.showMessageDialog(null, "Acces Denied!!! \nPlease contact Helpdesk");
}
}
String backupDir="" ;
JFrame frame = new JFrame("WELCOME {ELECTRONIC SYSTEM OF CASHER]");
// show a joptionpane dialog using showMessageDialog
JOptionPane.showMessageDialog(frame,
"WELCOME {ELECTRONIC SYSTEM OF CASHER] " + backupDir + "'.",
"CASHER SYSTEM",
JOptionPane.INFORMATION_MESSAGE);
String[] bn= {
( " ID QUIN ITEM NAME PRICE "),
theList.insertFirst(12,50,"tea ",1),
theList.insertFirst(11,67,"code red ",3),
theList.insertFirst(10,70,"bison ",3),
theList.insertFirst(9,115,"pepsi ",2),
theList.insertFirst(8,87,"orange juice ",1),
theList.insertFirst(7,33,"doughnut ",4),
theList.insertFirst(6,22,"thyme pie ",3),
theList.insertFirst(5,54,"cheese pie ",2),
theList.insertFirst(4,44,"moka ",7),
theList.insertFirst(3,32,"cappuccino ",3),
theList.insertFirst(2,55,"Burger ",5),
theList.insertFirst(1,40,"french fries ",3), };
theList.displayList1();
JList list = new JList (bn);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new JScrollPane(list));
frame.setSize(500, 500);
frame.setVisible(true);
Scanner input = new Scanner(System.in);
while(true){
char mode=' '; //initialize char
mode = JOptionPane.showInputDialog("Please enter the mode, \nA for SHOW MINU OF SELLER\nB for SELECT ITEMS AND ADDING\nM for DELET ITEMSn\nD for DESPLAY INVOICE").charAt(0);
switch (mode) {
case 'A': // show list
if (!theList.isEmpty())
theList.displayList2();
else
JOptionPane.showMessageDialog(null,
"lIST IS EMPTY");
break;
case 'B':
// search //caculate totale
for (int j = 1; j <= a; j++) {
String firstNumber
= JOptionPane.showInputDialog ( "Enter how many items u want" );
}
Link f = theList.find(b);
// find item
if (f != null) {
JOptionPane.showMessageDialog(null,
"yes we have " + f.qui + " Items from " + f.Items);
e = f.qui - 1;
JOptionPane.showMessageDialog(null,
"\nQuintity of " + f.Items + " Now is " + e);
t += f.price;
} else {
JOptionPane.showMessageDialog(null,
"we did not have " + f.Items);
}
JOptionPane.showMessageDialog(null,
"PRICE IS =" + t);
break;
case 'C':
// delet
String firstNumber2
= JOptionPane.showInputDialog ( "Enter ID of Items to deldt" );
int key = input.nextInt();
Link i = theList.delete(key); // delete item
if (i != null) {
JOptionPane.showMessageDialog(null,
"Deleted the ID of number " + i.ID );
JOptionPane.showMessageDialog(null,
"Delet the cuintitiy is = " + i.qui );
JOptionPane.showMessageDialog(null,
"Delet the Name Of Item " + i.Items );
JOptionPane.showMessageDialog(null,
"Delet the Price " + i.price );
t -= i.price;
JOptionPane.showMessageDialog(null,
"price after delet" + t );
} else {
JOptionPane.showMessageDialog(null,
" Can't delete" );
t -= i.price;
JOptionPane.showMessageDialog(null,
" price after delet" + t );
}
JOptionPane.showMessageDialog(null,
"Do you want to delet other items:enter 1 to delet no press 0 ");
int s = input.nextInt();
if (s == 1) {
String firstNumber3
= JOptionPane.showInputDialog ( "Enterthe number of item to delet" );
int g = input.nextInt();
Link q = theList.delete(g); // delete item
if (q != null) {
JOptionPane.showMessageDialog(null,
" Deleted the ID of number " + q.ID );
JOptionPane.showMessageDialog(null,
" Delet the cuintitiy is = " + q.qui );
JOptionPane.showMessageDialog(null,
" Delet the Name Of Item " + q.Items );
JOptionPane.showMessageDialog(null,
" Delet the Price " + q.price );
t -= q.price;
JOptionPane.showMessageDialog(null,
" price after delet =" + t );
} else { JOptionPane.showMessageDialog(null,
" Can't delete" );
}
} else if (s == 0) {
System.out.println("*******************");
}
break;
case 'D': {
System.out .println("\t\n\n***********Sucess canteen ************ \n\n");
String months[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
Calendar calendar = Calendar.getInstance();
// Display current time and date information.
JOptionPane.showMessageDialog(null,
" Date: " );
JOptionPane.showMessageDialog(null,
months[calendar.get(Calendar.MONTH)] );
JOptionPane.showMessageDialog(null,
" " + calendar.get(Calendar.DATE) + " " );
JOptionPane.showMessageDialog(null,
calendar.get(Calendar.YEAR) );
JOptionPane.showMessageDialog(null,
"Time: " );
JOptionPane.showMessageDialog(null,
calendar.get(Calendar.HOUR) + ":");
JOptionPane.showMessageDialog(null,
calendar.get(Calendar.MINUTE) + ":");
JOptionPane.showMessageDialog(null,
calendar.get(Calendar.SECOND));
// Set the time and date information and display it.
calendar.set(Calendar.HOUR, 10);
calendar.set(Calendar.MINUTE, 29);
calendar.set(Calendar.SECOND, 22);
JOptionPane.showMessageDialog(null,
"Updated time: ");
JOptionPane.showMessageDialog(null,
calendar.get(Calendar.HOUR) + ":");
JOptionPane.showMessageDialog(null,
calendar.get(Calendar.MINUTE) + ":");
JOptionPane.showMessageDialog(null,
calendar.get(Calendar.SECOND));
Link d = theList.find(b);
JOptionPane.showMessageDialog(null,
" YOU BUYING " + a + " ITEMS IS " + d.Items );
JOptionPane.showMessageDialog(null,
"TOTALE OF PRICE IS =" + t );
}
break;
default:
}
JOptionPane.showMessageDialog(null,
" THANK YOU " );
} // end switch
} // end while
}المشكله هنا بالتحديد قبل تركيب الواجهه
switch(num)
{
case 1: // show list
if( !theList.isEmpty() )
theList.displayList2();
else
System.out.println("List is empty");
break;
case 2:
// search //caculate totale
System.out.println("Enter how many items u want ");
a=input.nextInt();
for(int j=1;j<=a;j++)
{
System.out.println("\nEnter item ÏÏ "+j+" ÏÏ \n\n");
b=input.nextInt();
Link f = theList.find( b);
// find item
if( f != null)
{
System.out.println("yes we have "+f.qui+" Items from "+f.Items);
e= f.qui-1;
System.out.println("\nQuintity of "+f.Items+" Now is "+e);
t+= f.price;
}
else
{
System.out.println("we did not have "+f.Items);
}
}
System.out.println("\n ÒÒ price ="+t);
break;
case 3:
//delet
System.out.println("Enter ID of Items to deldt ");
int key=input.nextInt();
Link i = theList.delete(key); // delete item
if( i != null )
{
System.out.println("Deleted the ID of number "+ i.ID+"\n");
System.out.println("Delet the cuintitiy is = "+i.qui +"\n");
System.out.println("Delet the Name Of Item "+ i.Items+"\n" );
System.out.println("Delet the Price "+i.price+"\n");
t-=i.price;
System.out.println("price after delet"+t);
}
else
{
System.out.println("Can't delete ");
t-=i.price;
System.out.println("price after delet"+t);
}
System.out.println("Do you want to delen other items:enter 1 to delet no press 0 ");
int s=input.nextInt();
if(s==1)
{
System.out.println("Enterthe number of item to delet");
int g=input.nextInt();
Link q = theList.delete(g); // delete item
if( q != null )
{
System.out.println("Deleted the ID of number "+ q.ID+"\n");
System.out.println("Delet the cuintitiy is = "+q.qui +"\n");
System.out.println("Delet the Name Of Item "+ q.Items+"\n" );
System.out.println("Delet the Price "+q.price+"\n");
t-=q.price;
System.out.println("price after delet ="+t);
}
else
{
System.out.println("Can't delete ");
}
}
else
if(s==0)
{
System.out.println("*******************");
}
break;