Help w/ making a Java Pass
Hey,
I need some help in making a Java password applet.More specifically, when a button is clicked (e.getsource) getting the text from one text box, (the passwordbox) and printing a statement in another, or on the applet itself, and then taking them to the designated page. If you can understand this, and can help, PLEASE email me at [email protected] I know there is a way to do it in JavaScript, but I'd like to use an applet.
Thanks!!
Hoss
People here don't typically offer a code writing service. That's not intended to be rude or dismissive - it's just the way things are. For all I know you have may have code written and are facing some problem or other. But if you don't post that code and describe that problem, then it can come across as looking for someone else to write your code: something that will generate a warm, but unproductive, response.
Or maybe you simply have no idea where to start. In that case have a look at the [Graphical User Interfaces|http://java.sun.com/docs/books/tutorial/ui/index.html] section of Sun's Tutorial. The tutorial itself is quite comprehensive so if there are things there concerning basic Java syntax they are very likely explained in earlier sections.
Similar Messages
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Help with making JLabel visible for a few seconds only
Hello guys,
I need help with making a JLabel object visible for a few seconds only and disappear when a JButton has been clicked.
Here is piece of code where I add mouse listener to the JButton object in my case is (jrbFigure1) and
when is called sets icon and text to the JLabel jlbl object:
jrbFigure1.addMouseListener(new MouseAdapter() {
jrbFigure1.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
jlbl.setIcon(cross);
jlbl.setText(wrong);
This piece of code is in a switch statement, the statement is in a method.
The JLabel jlbl object is added in a panel in the constructor of the class.
I really hope someone could help me on this issue.
I would like to thank you in advance for any help or advice given.Bobson wrote:
Sorry for posting my issue twice, I thought, I posted it in a wrong forum:)It's OK. We'll ask the mods to delete the other thread.
I want the label to appear for X seconds when then button is pressed and disappear after that.Then a Swing Timer is what you want to use.
I need to do this in a number of cases from a switch statement because I several buttons.Better to have several ActionListeners, one for each button or each type of button, rather than one ActionListener with a large switch statement, a so-called switch-board listener. They're messy to debug and upgrade.
I tried to use Swing Timer, but I cannot set it properly.Go through the Sun Swing tutorial on Swing Timers. It's all outlined for you there: [http://java.sun.com/docs/books/tutorial/uiswing/misc/timer.html] -
I need help in making the programe which updates our code into client machi
I need help in making the programme which updates our code into client machine from the server.
As yahoo messanger does if there is any updated version of yahoo messanger.
It asks when we login into it do you want to update new version of yahoo messanger
It automatically updates it
Need Help??Sounds to me like you need Java Web Start.
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Need help in my assignment, Java programing?
Need help in my assignment, Java programing?
It is said that there is only one natural number n such that n-1 is a square and
n + 1 is a cube, that is, n - 1 = x2 and n + 1 = y3 for some natural numbers x and y. Please implement a program in Java.
plz help!!
and this is my code
but I don't no how to finsh it with the right condition!
plz heelp!!
and I don't know if it right or wrong!
PLZ help me!!
import javax.swing.JOptionPane;
public class eiman {
public static void main( String [] args){
String a,b;
double n,x,y,z;
boolean q= true;
boolean w= false;
a=JOptionPane.showInputDialog("Please enter a number for n");
n=Double.parseDouble(a);
System.out.println(n);
x=Math.sqrt(n-1);
y=Math.cbrt(n+1);
}OK I'll bite.
I assume that this is some kind of assignment.
What is the program supposed to do?
1. Figure out the value of N
2. Given an N determine if it is the correct value
I would expect #1, but then again this seem to be a strange programming assignment to me.
// additions followI see by the simulpostings that it is indeed #1.
So I will give the tried and true advice at the risk of copyright infringement.
get out a paper and pencil and think about how you would figure this out by hand.
The structure of a program will emerge from the mists.
Now that I think about it that advice must be in public domain by now.
Edited by: johndjr on Oct 14, 2008 3:31 PM
added additional info -
I have an old i phone 3G and do not know the password for it. trying to restore it from itunes so my daughter can use it as an ipod but keep getting error code 1015, any help on how to get passed this please?
Hi ratcat14!
I have an article that can help you troubleshoot this issue:
Resolve specific iTunes update and restore errors
http://support.apple.com/kb/ts3694
Check for hardware issues
Try to restore your iOS device two more times while connected with a cable, computer, and network you know are good. Also, confirm your security software and settings are allowing communication between your device and update servers. If you still see the alert when you update or restore, contact Apple support.
Common errors: 1, 10-47, 1002, 1011, 1012, 1014, 1000-1020.
Thanks for being a part of the Apple Support Communities!
Cheers,
Braden -
Please help me with these java puzzle ?
Dear all,
My friend send me typical java puzzle about java.util.ArrayList
which is getting messy. Please help me out. It's not a homework.
Please help me with these java puzzle ?
Dear all,
My friend send me typical java puzzle about java.util.ArrayList
which is getting messy. Please help me out. It's not a homework.
import java.util.*;
public class MyInt ______ ________ {
public static void main(String[] args) {
ArrayList<MyInt> list = new ArrayList<MyInt>();
list.add(new MyInt(2));
list.add(new MyInt(1));
Collections.sort(list);
System.out.println(list);
private int i;
public MyInt(int i) { this.i = i; }
public String toString() { return Integer.toString(i); }
________ int ___________ {
MyInt i2 = (MyInt)o;
return ________;
}Hints , fill the underlines with below :
implements
extends
Sortable
Object
Comparable
protected
public
i = i2.i
i
i2.i=i
compare(MyInt o, MyInt i2)
compare(Object o, Object i2)
sort(Object o) sort(MyInt o)
compareTo(MyInt o)
compareTo(Object o)Dear all,
My friend send me typical java puzzle aboutNotwithstanding your pathetic protestations typicial
of all your posts this is NOT a typical java "puzzle"
but is indeed a typical homework puzzle.
And it's damn easy if you spent 30 minutes with a
tutorial.
DO YOUR OWN HOMEWORK!
Hey i did it.
import java.util.*;
public class MyInt implements Comparable {
public static void main(String[] args) {
ArrayList<MyInt> list = new ArrayList<MyInt>();
list.add(new MyInt(2));
list.add(new MyInt(1));
Collections.sort(list);
System.out.println(list);
private int i;
public MyInt(int i) { this.i = i; }
public String toString() { return Integer.toString(i); }
public int compareTo(Object o){
MyInt i2 = (MyInt)o;
return i;
}E:\>javac MyInt.java
Note: MyInt.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
E:\>java MyInt
[1, 2] -
but i have problem in step 13. i can't see step 13 because the red box which has this message " please contact itunes support to complete this transaction" apears. plz help me how can i pass this step
You will need to do what it says, contact iTunes support. Click the Support tab above, then the Get Started link in the Contact Apple Support area and you'll be guided.
Regards. -
I am in the process of doing a Proof Of Concept / Evaluating products that can help us build a Java Application to Convert a PDF document to a Searchable PDF.
I wanted to check is there any simple JAVA API from Adobe to achive this ? Any direction in this regard is greatly appreciated.@You can achieve this using LiveCycle PDF Generator JAVA API. You can find required code here:
Adobe LiveCycle * Quick Start (SOAP mode): Converting a Microsoft Word document to a PDF document using the Java API
In parameters:
//Set createPDF2 parameter values
String adobePDFSettings = "Standard";
String securitySettings = "No Security";
String fileTypeSettings = "Standard OCR";
"Standard OCR" file type setting will run OCR on input pdf. In the code, instead of doc file provide a pdf file. Resultant pdf will be searchable PDF i.e OCRed PDF.
Feel feel to ask any further questions. -
Help to find a Java Text Editor PLEASE
HELP! I am in need of a program that will compile, execute and have an "autocomplete" sort of thing to help me with learning java. If there are any programs out there sort of like how Visual Basic in Visual Studio 2003-2005. But I need a program specifically for Java because I am learning. Please Reply as soon as possible. Thanks.
Yes, that's what I meant.
When I first started programming in Java (I already had exp with C/C++ and command line tools), I was looking for a IDE that had lots of features, two of which were Drag-an-Drop GUI editing and visual debugging. I admit it, I suffer from the Visual Studio way of doing things.
I downloaded Eclipse and Netbeans and tried both. Eclipse was faster loading but seemed spartan with its features. I also didn't quite understand the way Eclipse handled projects. It was a terminology thing really. Also, I was not familiar with all the various subproject's for eclipse and lacked time to figure it out.
I then tried Netbeans which loads slower but had everything I wanted in an IDE. Also calling projects 'projects', was easier for me to wrap my head around. That was in version 4 days. Since then, Netbeans has added alot of add on modules and features that are truly impressive for a free IDE. There are third party modules available on the web and adding them to the IDE is usually a 2 or 3 click process... Easy.
I haven't checked out Eclipse lately but I'm sure they are also doing things to improve their IDE as well. Competition between the two is a good thing, it just benefits the community as a whole.
(*gets off his soapbox*)
JJ -
Need help parsing a long and passing the value.
I'm doing Cattle Drve 4b on javaranch.com (http://www.javaranch.com/say.jsp) and I need a bit of help.
I want to pass the reference of my num value to several small methods to work out the value printed. Here's the original code I did from 4a:
public class Say{
public static void main(String[]args){
int num = Integer.parseInt(args[0]); // parse argument from command line
String array[] ={"Zero", "One", "Two", "Three", "four", "five", "six","seven","eight",
"nine","ten","eleven","twelve","thirteen","fourteen","fifteen","sixteen",
"seventeen","eighteen","nineteen","twenty","thirty","fourty","fifty",
"sixty","seventy","eighty","ninety"}; //initialize the array
//start check for value
if(num<21)
System.out.println("\n" + array[num]);
// \n is added before
else if(num<30) // each result for a
System.out.println("\n" + array[20]+ "-" + array[(num-20)]); // cleaner output
else if(num<40)
System.out.println("\n" + array[21]+ "-" + array[(num-30)]);
else if(num<50)
System.out.println("\n" + array[22]+ "-" + array[(num-40)]);
else if(num<60)
System.out.println("\n" + array[23]+ "-" + array[(num-50)]);
else if(num<70)
System.out.println("\n" + array[24]+ "-" + array[(num-60)]);
else if(num<80)
System.out.println("\n" + array[25]+ "-" + array[(num-70)]);
else if(num<90)
System.out.println("\n" + array[26]+ "-" + array[(num-80)]);
else if(num<100)
System.out.println("\n" + array[27]+ "-" + array[(num-90)]);
//endFor 4b I need to be able to print out values in the billions, so I was going to create a few methods to keep it clean like so:
public class billion (long (int num)
{ if( num<9 billion)
num-= 8 billion
System.out.print("eight billion ");
else if(num<8 billion){
num-= 7 billion
System.out.print("seven billion ");
....etc
return num;
public class million...
public class thousand...
etc.And the current main section will be moved into a new "tens" class.
I'm running into two problems though.
1. How do you parse a long? I know integers are like so:
int num = Integer.parseInt(args[0]); are longs the same?
like:
long num = Long.parseLong(args[0L])if not, how can I do it?
2. how do I properly pass num to all the methods? I'm going to make num a public int and make the methods public because that seems simplest, but can I pass num to the method and then return the new value of num back to main?
BTW, I'll be removing the carriage return from the beginning of the "tens" class when all is said and done so the results don't end up printing on multiple lines.
Thanks in advance everyone.The L suffix is used to identify a Long literal.
The index of the args[] array does not need to be specified as a Long.
Solong num = Long.parseLong(args[0]);will suffice. You might want to put that in a try/catch block to catch the NumberFormatException that will be thrown if args[0] cannot be parsed to a long value.
Various ways to update the value of num in the methods of the same class:
Simplest of all: declare num as an instance variable. The methods simply access and assign its value.
Other ways:
-- pass num as a parameter to the method.
-- return the value of num from the method (provided the method doesn't have to return any other value)
-- Have a getNum() method return the value of num
-- Have setNum() method to update the value of num
db
What's that line? public class billion (long (int num)edit Typos, typos...
Also, the set/get approach with public access is the preferred method when used in the methods of another class.
Don't forget that the other class has to know whose set/get methods to call.
Message was edited by:
Darryl.Burke -
How doest jdk docs help as in writing java code?
hi i wonder how does jdk docs help as in writing java code because if i google a java code the jdk docs always becomes the result of my search but in my experience jdk docs never helps me.
is there any one know how to use jdk docs? and how to get the code from there.
im telling about jdk docs from here http://download.oracle.com/javase/1.4.2/docs/api/
cross posted from http://www.thenewboston.com/forum/viewtopic.php?f=119&t=13778
Edited by: 871484 on Jul 18, 2011 4:18 PM871484 wrote:
ok can any one give me example how to use jdk docs? for example this code
Your question still does not make any sense, and you still haven't clarified what you're not understanding.
However, if you think that just by reading the API docs, with no other training or study, that you will be able to write that code, then you are seriously misunderstanding the purpose of the docs.
Obviously English is not your native language. You grew up speaking some other language at home and with your friends, and at some point in school or as private study, you started to learn English. You learned about the grammar and the alphabet and pronunciation, sentence structure, word order, etc. Now you have the basics of how the language works, and you know some words. When you want to learn new words to fit into the structure you have learned, you use a dictionary.
If you didn't study the grammar, sentence structure, etc., and just said, "I want to learn English. I will look at a dicationary," clearly that would not work.
Right?
So, since you now understand and agree with the English example, let me state something that I hope is obvious to you by now: The API docs are your dictionary. They are not a substitute for learning the language basics.
Furthermore, once you know the language basics in English and have your dictionary, you still won't know how to write a resume (which you may know as a CV). You will look at examples and perhaps take a course on resume (CV) writing. Just reading a dictionary won't help you write a resume(CV). Similarly, if you know some Java basics, you can't learn how to write a Swing app just by reading the Javadocs. You'll look at tutorials and examples. Then, once you know the basic structure of a Swing app, you'll look to the javadocs for more details about more kinds of GUI classes--different buttons and windows and panes and panels and layout managers, etc. -
Need help with long term Java problems
I've been having problems with Java on my computer for about a year now, and I'm hoping that someone here can help me out.
Java used to work fine on the computer when I first got it (a Dell laptop) and I hadn't installed anything myself. But then one day it stopped loading Java applets, and hasn't worked since. By this, I mean that I get the little colorful symbol in a box when I try to play Yahoo games, use the http://www.jigzone.com site, go to chat rooms, etc. Java menus on websites like http://www.hartattack.tv used to work still, but lately they've been giving me that symbol too.
I've tried downloading a newer version of Java, but nothing I do seems to work, and I don't know of anything I did to trigger it not working. I'm hoping there's a simple solution to this, and I'm just dumb.
Thanks.This might be way off, but it's something that's tripped me up in the past:
If you are using Sun's Java plugin, the first time you go to a site that has a particular Java applet, you may be asked to approve/reject a security request.
If you have clicked on any other windows while the request is first being loaded (which can take some time, because this is swing based), then the security dialog box does not pop to the top of the window stack, and doesn't add an entry into the task bar.
It appears that Java just doesn't work, but it's actually waiting for you to click "Yes". You can check this by hitting alt-tab and seeing if the Java coffee cup icon is one of the options.
- K -
Help me making java program by Jcreator
1. reversing an integer problem:
a. write a program that allows a user to enter an integer up to 4 digits in length. The program should then reverse the order of the integer. The new number should have it's full decimal value (e.g. 432 is really 3*100 + 2*10+ 1*1)
Enter number:123
The reversal is 321
Enter number:1005
The reversal is 5001OK the specification said smth. about decimal extension, here it is:
EXPLANATION:
I am just a 'medium-advanced' Java programer and do this because I wan't to
write more code and gather experience.
And if I just write code but don't show it to any body it would get wasted...
OK , ok now on I Stop helping Trolls and laymen.
* @author melhiah
public class ReverseAnInteger {
private static final int MAX_INT_LEN = 6;
public static void main(String[] args) throws Exception {
/* if(args.length < 1) {
System.out.println("Usage: java ReverseAnInteger <integer-value>");
System.exit(0);
//String parsedIntegerString = args[0].substring(0, MAX_INT_LEN);
String testIntegerString = "1234567890";
String parsedIntegerString;
if(testIntegerString.length() < MAX_INT_LEN) {
parsedIntegerString = testIntegerString.substring(0,
testIntegerString.length());
} else {
parsedIntegerString = testIntegerString.substring(0, MAX_INT_LEN);
String reversedIntegerString = showDecimalExtension(
reverseInt(parsedIntegerString));
System.out.println(reversedIntegerString);
private static String reverseInt(String intString) {
char[] charString = intString.toCharArray();
char[] resultString = new char[charString.length];
int top = charString.length;
for(int i = 0; i < charString.length; i++) {
resultString[i] = charString[--top];
return new String(resultString);
private static String showDecimalExtension(String intString) {
StringBuffer buffer = new StringBuffer();
StringBuffer sb = new StringBuffer(); sb.append("1");
for(int i = 1; i < intString.length(); i++) {
sb.append("0");
String decim = sb.toString();
for(int i = 0; i < intString.length(); i++) {
String str = intString.charAt(i) + "*" + decim + " + ";
decim = decim.substring(0, decim.length() -1);
buffer.append(str);
String result = buffer.substring(0, buffer.length() -3); // to get rid of the trailing '+'
return result;
} -
HELP ME i need to pass String variables from one Frame to another
I need help with some code.
i need to pass a set of string values from one frame to another.
from the mainscreen i need to pass what type of seats the user has requested this is done by radio buttons. i need this information to then be passed onto the next frame called Mydialog1 and placed in a textbox with label st. it dosn't comple and i don't know why
this is getting me depressed. I need some serious help with this
can anybody get this to work??
here is the code
Mainscreen1 code
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class mainscreen1 extends Applet implements ItemListener,
ActionListener
private Image layout1;
private int frame;
private int xpos,ypos,xdir,ydir;
public TextField tn, tt1, tt2, total;
public int value, ticketnum, sum, nr_seats, ctot;
public Label title, seat, need, payable;
public Button b1, b2, b3;
Mydialog1 d;
String stype, c1, sr;
public void init()
setBackground(Color.pink);
setSize (600, 460);
setLayout(null);
//Mydialog1.mehod(sr);
title=new Label("The Almeida Theater booking system");
title.setBounds(100,0,400,30);
title.setFont(new Font("Verdana", Font.PLAIN,24));
add(title);
seat=new Label("Please choose a seating location:");
seat.setBounds(300,40,190,20);
seat.setFont(new Font("Verdana", Font.BOLD,12));
add(seat);
payable=new Label("Total Payable:�");
payable.setBounds(300,390,100,20);
payable.setFont(new Font("Verdana", Font.BOLD,12));
add(payable);
need=new Label("Please enter the number of seats needed:");
need.setBounds(300,180,245,20);
need.setFont(new Font("Verdana", Font.BOLD,12));
add(need);
CheckboxGroup sr = new CheckboxGroup();
Checkbox Stalls = new Checkbox("Stalls", true, sr);
Stalls.setBounds(490,40,60,25);
add(Stalls);
Stalls.addItemListener(this);
Checkbox Balcony = new Checkbox("Balcony", false, sr);
Balcony.setBounds(490,65,65,25);
add(Balcony);
Balcony.addItemListener(this);
Checkbox Concessions = new Checkbox("Concessions", false,
sr);
Concessions.setBounds(490,90,94,25);
add(Concessions);
Concessions.addItemListener(this);
Button b1=new Button("Quote");
b1.setBounds(20,395,80,30);
add(b1);
b1.addActionListener( this );
Button b2=new Button("Confirm booking");
b2.setBounds(110,395,100,30);
add(b2);
b2.addActionListener( this );
Button b3=new Button("Clear");
b3.setBounds(480,410,100,30);
add(b3);
b3.addActionListener( this );
tt1=new TextField(60);
tt1.setBounds(300,250,270,20);
add(tt1);
tt1.setEditable (false);
tt1.addActionListener(this);
tt2=new TextField(60);
tt2.setBounds(300,300,150,20);
add(tt2);
tt2.setEditable (false);
tt2.addActionListener(this);
tn=new TextField(3);
tn.setBounds(545,180,30,20);
add(tn);
tn.addActionListener(this);
total=new TextField(5);
total.setBounds(400,390,45,20);
add(total);
total.setEditable (false);
total.addActionListener(this);
xpos = getSize().width/-1400;
ypos = getSize().height/12;
layout1 = getImage(getDocumentBase(),"layout1.gif");
repaint();
public void itemStateChanged(ItemEvent e)
String c1 = (String) e.getItem();
if (c1 == "Stalls")
value = 20;
else if (c1 == "Balcony")
value = 15;
else
value = 10;
tt1.setText("You have chosen to sit in the " + c1 + "
area");
tt2.setText("Each seat will cost: �" + value);
repaint();
public void clearValue()
//cb.setSelectiob
total.setText("");
tt1.setText("");
tt2.setText("");
tn.setText("");
public void actionPerformed ( ActionEvent e )
if( e.getActionCommand() == "Quote" )
int nr_seats = Integer.parseInt(tn.getText());
total.setText("" +nr_seats*value);
else if( e.getActionCommand() == "Confirm booking")
int nr_seats = Integer.parseInt(tn.getText());
int ctot = Integer.parseInt(total.getText());
//String stype = String.parseString(c1.getText());
total.setText("" +nr_seats*value);
d = new Mydialog1();
d.set_text(nr_seats);
d.set_texts(ctot);
stype = sr.getSelectedItem();
else if ( e.getActionCommand() == "Clear")
clearValue();
ticketnum = Integer.parseInt(tn.getText());
repaint();
public void paint(Graphics g)
g.setColor(Color.black);
g.drawString ("You have chosen:" + ticketnum +"
seats", 300, 365);
g.drawImage(layout1,xpos,ypos,null);
Mydialog1 code
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class Mydialog1 extends Frame implements ItemListener,
ActionListener
public Label title, custd, custd1, custfn, custad, custsn, custpc,
custph, custem, custem1, need;
public Button b1, b2, b3;
public TextField cfnt, csnt, cdt,cdt2,cdt3,cdt4, tf, tt, st,
cpct, cph, cem;
public int value, nr_seats, ctot;
creditcard cc;
String stype, c;
public Mydialog1() //constructor
init();
public void init()
custer(String c)
stype = c;
setBackground(Color.yellow);
setSize (500, 500);
setLayout(null);
setLocation(320,140);
setVisible(true);
//Mydialog1(Frame f);
title=new Label("The Almeida Theater booking system");
title.setBounds(70,20,400,30);
title.setFont(new Font("Verdana", Font.PLAIN,24));
add(title);
CheckboxGroup ct = new CheckboxGroup();
Checkbox Mr = new Checkbox("Mr", true, ct);
Mr.setBounds(5,190,36,25);
add(Mr);
Mr.addItemListener(this);
Checkbox Mrs = new Checkbox("Mrs", false, ct);
Mrs.setBounds(50,190,42,25);
add(Mrs);
Mrs.addItemListener(this);
Checkbox Miss = new Checkbox("Miss", false, ct);
Miss.setBounds(95,190,45,25);
add(Miss);
Miss.addItemListener(this);
custd=new Label("If above booking details are correct please
fill in your deatils below");
custd.setBounds(5,140,400,30);
add(custd);
custd1=new Label("If they are incorrect please click on
close and re-book seats.");
custd1.setBounds(5,160,400,30);
add(custd1);
custfn=new Label("*ForeName:");
custfn.setBounds(5,220,60,20);
add(custfn);
cfnt=new TextField(60);
cfnt.setBounds(70,220,150,20);
add(cfnt);
custsn=new Label("*SurName:");
custsn.setBounds(230,220,60,20);
add(custsn);
csnt=new TextField(60);
csnt.setBounds(300,220,150,20);
add(csnt);
custad=new Label("*Address:");
custad.setBounds(5,250,55,20);
add(custad);
cdt=new TextField(60);
cdt.setBounds(70,250,180,20);
add(cdt);
cdt2=new TextField(60);
cdt2.setBounds(70,270,180,20);
add(cdt2);
cdt3=new TextField(60);
cdt3.setBounds(70,290,180,20);
add(cdt3);
cdt4=new TextField(60);
cdt4.setBounds(70,310,180,20);
add(cdt4);
custpc=new Label("*Postcode:");
custpc.setBounds(5,330,60,20);
add(custpc);
cpct=new TextField(60);
cpct.setBounds(70,330,180,20);
add(cpct);
custph=new Label("*Telephone:");
custph.setBounds(5,360,65,20);
add(custph);
cph=new TextField(60);
cph.setBounds(70,360,180,20);
add(cph);
custem=new Label("E-mail:");
custem.setBounds(5,390,65,20);
add(custem);
cem=new TextField(60);
cem.setBounds(70,390,180,20);
add(cem);
custem1=new Label("eg: [email protected]");
custem1.setBounds(250,390,150,20);
add(custem);
need=new Label("* = required field.");
need.setBounds(350,400,150,20);
add(need);
//seat number being pased into this textbox
tf = new TextField();
tf.setBounds(5, 80, 160,20);
tf.setEditable (false);
add(tf);
//seat number being pased into this textbox
tt = new TextField();
tt.setBounds(5, 100, 160,20);
tt.setEditable (false);
add(tt);
//seat number being pased into this textbox
st = new TextField(stype);
st.setBounds(5, 120, 230,20);
st.setEditable (false);
add(st);
setVisible(true);
Button b1=new Button("Close");
b1.setBounds(20,440,80,30);
add(b1);
b1.addActionListener( this );
Button b2=new Button("Proced with booking");
b2.setBounds(110,440,150,30);
add(b2);
b2.addActionListener( this );
Button b3=new Button("Clear");
b3.setBounds(350,440,100,30);
add(b3);
b3.addActionListener( this );
public void itemStateChanged(ItemEvent e)
String c2 = (String) e.getItem();
if (c2 == "Mr")
value = 20;
else if (c2 == "Mrs")
value = 15;
else
value = 10;
public void clearValuea()
//cb.setSelectiob
cem.setText("");
cph.setText("");
cdt.setText("");
cdt2.setText("");
cdt3.setText("");
cdt4.setText("");
cfnt.setText("");
csnt.setText("");
cpct.setText("");
cph.setText("");
cem.setText("");
public void actionPerformed( ActionEvent e )
if( e.getActionCommand() == "Close" )
this.dispose();
else if( e.getActionCommand() == "Proced with booking")
cc = new creditcard();
else if( e.getActionCommand() == "Clear")
clearValuea();
public void set_text (int nr_seats)
tf.setText (" You have booked " + nr_seats + " seat/s");
public void set_texts (int ctot)
tt.setText (" The total is � " + ctot);
public void SetTextField(String c1)
st.setText(c1);
creditcard
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class creditcard extends Frame implements ActionListener
public Label title, ccd1, ccfn;
public Button b1, b2;
public TextField cnt, cdt, ccfnt;
public String cfnt;
public creditcard() //constructor
init();
public void init()
setBackground(Color.green);
setSize (500, 500);
setLayout(null);
setLocation(320,140);
setVisible(true);
//Mydialog1(Frame f);
title=new Label("The Almeida Theater booking system");
title.setBounds(70,20,400,30);
title.setFont(new Font("Verdana", Font.PLAIN,24));
add(title);
ccd1=new Label("If billing address is different please edit below information.");
ccd1.setBounds(5,50,400,20);
ccd1.setFont(new Font("Verdana", Font.BOLD,12));
add(ccd1);
ccfn=new Label("*ForeName:");
ccfn.setBounds(5,220,60,20);
add(ccfn);
ccfnt=new TextField(60);
ccfnt.setBounds(70,220,150,20);
add(ccfnt);
Button b1=new Button("Close");
b1.setBounds(20,440,80,30);
add(b1);
b1.addActionListener( this );
Button b2=new Button("Proced with booking");
b2.setBounds(110,440,150,30);
add(b2);
b2.addActionListener( this );
public void actionPerformed( ActionEvent e )
if( e.getActionCommand() == "Close" )
this.dispose();
else if( e.getActionCommand() == "Proced with booking")
setBackground(Color.red);Here's the new mainscreen1.java file...
public class mainscreen1 extends Applet implements ItemListener,
ActionListener
private Image layout1;
private int frame;
private int xpos,ypos,xdir,ydir;
public TextField tn, tt1, tt2, total;
public int value, ticketnum, sum, nr_seats, ctot;
public Label title, seat, need, payable;
public Button b1, b2, b3;
Mydialog1 d;
CheckboxGroup checkGroup; // heres the new global CheckboxGroup variable.
String stype, c1, dialogString; // new name for the string too...
public void init()
setBackground(Color.pink);
setSize(600, 460);
setLayout(null);
//dialogString = "Hi";
//Mydialog1.mehod(dialogString);
title=new Label("The Almeida Theater booking system");
title.setBounds(100,0,400,30);
title.setFont(new Font("Verdana", Font.PLAIN,24));
add(title);
seat=new Label("Please choose a seating location:");
seat.setBounds(300,40,190,20);
seat.setFont(new Font("Verdana", Font.BOLD,12));
add(seat);
payable=new Label("Total Payable:�");
payable.setBounds(300,390,100,20);
payable.setFont(new Font("Verdana", Font.BOLD,12));
add(payable);
need=new Label("Please enter the number of seats needed:");
need.setBounds(300,180,245,20);
need.setFont(new Font("Verdana", Font.BOLD,12));
add(need);
checkGroup = new CheckboxGroup(); // instantiate the global CheckboxGroup
Checkbox Stalls = new Checkbox("Stalls", true, checkGroup); // add to the CheckboxGroup
Stalls.setBounds(490,40,60,25);
add(Stalls);
Stalls.addItemListener(this);
Checkbox Balcony = new Checkbox("Balcony", false, checkGroup);
Balcony.setBounds(490,65,65,25);
add(Balcony);
Balcony.addItemListener(this);
Checkbox Concessions = new Checkbox("Concessions", false, checkGroup);
Concessions.setBounds(490,90,94,25);
add(Concessions);
Concessions.addItemListener(this);
Button b1=new Button("Quote");
b1.setBounds(20,395,80,30);
add(b1);
b1.addActionListener( this );
Button b2=new Button("Confirm booking");
b2.setBounds(110,395,100,30);
add(b2);
b2.addActionListener( this );
Button b3=new Button("Clear");
b3.setBounds(480,410,100,30);
add(b3);
b3.addActionListener( this );
tt1=new TextField(60);
tt1.setBounds(300,250,270,20);
add(tt1);
tt1.setEditable(false);
tt1.addActionListener(this);
tt2=new TextField(60);
tt2.setBounds(300,300,150,20);
add(tt2);
tt2.setEditable(false);
tt2.addActionListener(this);
tn=new TextField(3);
tn.setBounds(545,180,30,20);
add(tn);
tn.addActionListener(this);
total=new TextField(5);
total.setBounds(400,390,45,20);
add(total);
total.setEditable(false);
total.addActionListener(this);
xpos = getSize().width/-1400;
ypos = getSize().height/12;
layout1 = getImage(getDocumentBase(),"layout1.gif");
repaint();
public void itemStateChanged(ItemEvent e) {
String c1 = (String) e.getItem();
if (c1 == "Stalls") {
value = 20;
else if (c1 == "Balcony") {
value = 15;
else {
value = 10;
tt1.setText("You have chosen to sit in the " + c1 + " area");
tt2.setText("Each seat will cost: �" + value);
repaint();
public void clearValue() {
//cb.setSelectiob
total.setText("");
tt1.setText("");
tt2.setText("");
tn.setText("");
public void actionPerformed( ActionEvent e ) {
if( e.getActionCommand() == "Quote" ) {
int nr_seats = Integer.parseInt(tn.getText());
total.setText("" +nr_seats*value);
else if( e.getActionCommand() == "Confirm booking") {
int nr_seats = Integer.parseInt(tn.getText());
int ctot = Integer.parseInt(total.getText());
total.setText("" +nr_seats*value);
d = new Mydialog1();
d.set_text(nr_seats);
d.set_texts(ctot);
// You can do your checkbox selection data transfer here like this...
// I used d.SetTextField because you had that defined in the Mydialog1 class.
Checkbox chkBx = checkGroup.getSelectedCheckbox();
d.SetTextField(chkBx.getLabel());
else if ( e.getActionCommand() == "Clear") {
clearValue();
ticketnum = Integer.parseInt(tn.getText());
repaint();
public void paint(Graphics g)
g.setColor(Color.black);
g.drawString("You have chosen:" + ticketnum +" seats", 300, 365);
g.drawImage(layout1,xpos,ypos,null);
} -
Challange for you, help for me! java program
I am a beginning java student and desparately (again) in help of someone who will check my java program. See below what they want from me, and try to make a program of it that works in all the ways that are asked. Thank you for helping me, i am running out of time.
Prem Pradeep
[email protected]
Catalogue Manager II
Specification:
1. Develop an object to represent to encapsulate an item in a catalogue. Each CatalogueItem has three pieces of information: an alphanumeric catalogue code, a name, and a price (in dollars and cents), that excludes sales tax. The object should also be able to report the price, inclusive of a 15% sales tax, and the taxed component of the price.
2. Data input will come from a text file, whose name is passed in as the first command-line argument to the program. This data file may include up to 30 data items (the program will need to be able to support a variable number of actual items in the array without any errors).
3. The data lines will be in the format: CatNo:Description:Price Use a StringTokenizer object to separate these data lines into their components.
4. A menu should appear, prompting the user for an action:
a. Display all goods: this will display a summary (in tabulated form) of all goods currently stored in the catalogue: per item the category, description, price excluding tax, payable tax and price including tax.
b. Dispfay cheapest/dearest goods: this will display a summary of all the cheapest and most expensive item(s) in the catalogue. In the case of more than one item being the cheapest (or most expensive), they should all be listed.
c. Sort the list: this will use a selection sort algorithm to sort the list in ascending order, using the catalogue number as the key.
d. Search the list: this will prompt the user for a catalogue number, and use a binary search to find the data. If the data has not yet been sorted, this menu option should not operate, and instead display a message to the user to sort the data before attempting a search
5. Work out a way to be able to support the inc tax/ex tax price accessors, and the tax component accessor, without needing to store any additional information in the object.
6. Use modifiers where appropriate to:
a. Ensure that data is properly protected;
b. Ensure that the accessors and mutators are most visible;
c. The accessors and mutators for the catalogue number and description cannot be overridden.
d. The constant for the tax rate is publicly accessible, and does not need an instance of the class present in order to be accessible.
7. The program should handle all exceptions wherever they may occur (i.e. file 1/0 problems, number formatting issues, etc.) A correct and comprehensive exception handling strategy (leading to a completely robust program) will be necessary and not an incomplete strategy (i.e. handling incorrect data formats, but not critical errors),
Sample Execution
C:\> java AssignmentSix mydata.txt
Loading file data from mydata.txt ...17 item(s) OK
CATALOGUE MANAGER: MAIN MENU
============================
a) display all goods b) display cheapest/dearest goods
c) sort the goods list d) search the goods list
e) quit
Option: d
The goods cannot be searched, as the list is not yet sorted.
CATALOGUE MANAGER: MAIN MENU
============================
a) display all goods b) display cheapest/dearest goods
c) sort the goods list d) search the goods list
e) quit
Option: b
CHEAPEST GOODS IN CATALOGUE
Cat Description ExTax Tax IncTax
BA023 Headphones 23.00 3.45 26.45
JW289 Tape Recorder 23.00 3.45 26.45
MOST EXPENSIVE GOODS IN CATALOGUE
Cat Description ExTax Tax IncTax
ZZ338 Wristwatch 295.00 44.25 339.25
CATALOGUE MANAGER: MAIN MENU
============================
a) display all goods b) display cheapest/dearest goods
c) sort the goods list d) search the goods list
e) quit
Option: c
The data is now sorted.
CATALOGUE MANAGER: MAIN MENU
============================
a) display all goods b) display cheapest/dearest goods
c) sort the goods list d) search the goods list
e) quit
Option: d
Enter the catalogue number to find: ZJ282
Cat Description ExTax Tax IncTax
ZJ282 Pine Table 98.00 14.70 112.70
CATALOGUE MANAGER: MAIN MENU
============================
a) display all goods b) display cheapest/dearest goods
c) sort the goods list d) search the goods list
e) quit
Option: e
Here you have the program as far as I could get. Please try to help me make it compact and implement a sorting method.
Prem.
By the way: you can get 8 Duke dollars (I have this topic also in the beginnersforum)
//CatalogueManager.java
import java.io.*;
import java.text.DecimalFormat;
import java.util.StringTokenizer;
public class CatalogueManager {
// private static final double TAXABLE_PERCENTAGE = 0.15;
// Require it to be publicly accessible
// static means it is class variable, not an object instance variable.
public static final double TAXABLE_PERCENTAGE = 0.15;
private String catalogNumber;
private String description;
private double price;
/** Creates a new instance of CatalogueManager */
public CatalogueManager() {
catalogNumber = null;
description = null;
price = 0;
public CatalogueManager(String pCatalogNumber, String pDescription, double pPrice) {
catalogNumber = pCatalogNumber;
description = pDescription;
price = pPrice;
// the mutators must be most visible
// the final keyword prevents overridden
public final void setCatalogNumnber(String pCatalogNumber) {
catalogNumber = pCatalogNumber;
// the mutators must be most visible
// the final keyword prevents overridden
public final String getCatalogNumber() {
String str = catalogNumber;
return str;
// the mutators must be most visible
// the final keyword prevents overridden
public final void setDescription(String pDescription) {
description = pDescription;
// the accessors must be most visible
// the final keyword prevents overridden
public final String getDescription() {
String str = description;
return str;
// If the parameter is not a double type, set the price = 0;
// the mutators must be most visible
public boolean setPrice(String pPrice) {
try {
price = Double.parseDouble(pPrice);
return true;
catch (NumberFormatException nfe) {
price = 0;
return false;
// the accessors must be most visible
public double getPrice() {
double rprice = price;
return formatDouble(rprice);
double getTaxAmount(){
double rTaxAmount = price * TAXABLE_PERCENTAGE;
return formatDouble(rTaxAmount);
double getIncTaxAmount() {
double rTaxAmount = price * (1 + TAXABLE_PERCENTAGE);
return formatDouble(rTaxAmount);
double formatDouble(double value) {
DecimalFormat myFormatter = new DecimalFormat("###.##");
String str1 = myFormatter.format(value);
return Double.parseDouble(str1);
public static void main(String[] args) throws IOException {
final int MAX_INPUT_ALLOW = 30;
int MAX_CURRENT_INPUT = 0;
FileReader fr;
BufferedReader br;
CatalogueManager[] catalogList = new CatalogueManager[MAX_INPUT_ALLOW];
String str;
char chr;
boolean bolSort = false;
double cheapest = 0;
double mostExpensive = 0;
String header = "Cat\tDescription\tExTax\tTax\tInc Tax";
String lines = "---\t-----------\t------\t---\t-------";
if (args.length != 1) {
System.out.println("The application expects one parameter only.");
System.exit(0);
try {
fr = new FileReader(args[0]);
br = new BufferedReader(fr);
int i = 0;
while ((str = br.readLine()) != null) {
catalogList[i] = new CatalogueManager();
StringTokenizer tokenizer = new StringTokenizer(str, ":" );
catalogList.setCatalogNumnber(tokenizer.nextToken().trim());
catalogList[i].setDescription(tokenizer.nextToken().trim());
if (! catalogList[i].setPrice(tokenizer.nextToken())){
System.out.println("The price column cannot be formatted as dobule type");
System.out.println("Application will convert the price to 0.00 and continue with the rest of the line");
System.out.println("Please check line " + i);
if (catalogList[i].getPrice() < cheapest) {
cheapest = catalogList[i].getPrice();
if (catalogList[i].getPrice() > mostExpensive) {
mostExpensive = catalogList[i].getPrice();
i++;
fr.close();
MAX_CURRENT_INPUT = i;
catch (FileNotFoundException fnfe) {
System.out.println("Input file cannot be located, please make sure the file exists!");
System.exit(0);
catch (IOException ioe) {
System.out.println(ioe.getMessage());
System.out.println("Application cannot read the data from the file!");
System.exit(0);
boolean bolLoop = true;
BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
do {
System.out.println("");
System.out.println("CATALOGUE MANAGER: MAIN MENU");
System.out.println("============================");
System.out.println("a) display all goods b) display cheapest/dearest goods");
System.out.println("c) sort the goods list d) search the good list");
System.out.println("e) quit");
System.out.print("Option:");
try {
str = stdin.readLine();
if (str.length() == 1){
str.toLowerCase();
chr = str.charAt(0);
switch (chr){
case 'a':
System.out.println(header);
System.out.println(lines);
for (int i = 0; i < MAX_CURRENT_INPUT; i++){
System.out.println(catalogList[i].getCatalogNumber() + "\t" +
catalogList[i].getDescription() + "\t" +
catalogList[i].getPrice() + "\t" +
catalogList[i].getTaxAmount() + "\t" +
catalogList[i].getIncTaxAmount());
System.out.println("");
break;
case 'b':
System.out.println("");
System.out.println("CHEAPEST GOODS IN CATALOGUE");
System.out.println(header);
System.out.println(lines);
for (int i = 0; i < MAX_CURRENT_INPUT; i++){
if (catalogList[i].getPrice() == cheapest){
System.out.println(catalogList[i].getCatalogNumber() + "\t" +
catalogList[i].getDescription() + "\t" +
catalogList[i].getPrice() + "\t" +
catalogList[i].getTaxAmount() + "\t" +
catalogList[i].getIncTaxAmount());
System.out.println("");
System.out.println("MOST EXPENSIVE GODS IN CATALOGUE");
System.out.println(header);
System.out.println(lines);
for (int i = 0; i < MAX_CURRENT_INPUT; i++){
if (catalogList[i].getPrice() == mostExpensive) {
System.out.println(catalogList[i].getCatalogNumber() + "\t" +
catalogList[i].getDescription() + "\t" +
catalogList[i].getPrice() + "\t" +
catalogList[i].getTaxAmount() + "\t" +
catalogList[i].getIncTaxAmount());
System.out.println("");
break;
case 'c':
if (bolSort == true){
System.out.println("The data has already been sorted");
else {
System.out.println("The data is not sorted");
break;
case 'd':
break;
case 'e':
bolLoop = false;
break;
default:
System.out.println("Invalid choice, please re-enter");
break;
catch (IOException ioe) {
System.out.println("ERROR:" + ioe.getMessage());
System.out.println("Application exits now");
System.exit(0);
} while (bolLoop);One thing you're missing totally is CatalogueItem!! A CatalogueManager manages the CatalogueItem's, and is not an CatalogueItem itself. So at least you have to have this one more class CatalogueItem.
public class CatalogueItem {
private String catalogNumber;
private String description;
private double price;
//with all proper getters, setters.
Then CatalogueManager has a member variable:
CatalogueItem[] items;
Get this straight and other things are pretty obvious...
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