Anyone help ol' man with Cocoa project, please?
Hi all,
I recently volunteered to help transcribe Birth, Marriage and Death (BMD) records dating back to 1837 for FreeBMD -- a registered charity -- to help folks trace their family trees online. Unfortunately, while the Mac software has some nifty features, it's still really s-l-o-o-w and tedious to use and I reckon the speed and accuracy could be increased 3x using a slightly different approach.
I was reasonably okay with 'C' in the old days but never quite managed to get my head around OOP yet (probably due to my age). The app I have in mind consists of an ultra-simple text editor (a la Apple's 15 minute example project) with combined bare-bones image/PDF viewer plus a few extra bells and whistles, and I've already designed the interface -- about as far as I can get for now
I see a lot of really knowledgeable folks replying to postings in this discussion group, many with huge numbers of posts under their belts, and I reckon this would be considered a fairly 'trivial' app that could be knocked out during a long coffee break for anyone experienced in Cocoa programming.
If you feel you'd like to help with this charitable, not-for-profit project, please email me at "ojisanATadamDOTcomDOTau" and I'll send you what I've got, together with some good sample code that clearly addresses most of the problems.
Your input will help me get a handle on what eludes me about OOP (I learn really well by example), make life easier for all the Mac volunteer transcribers out there, help MILLIONS of hobbyists trace their ancestors quicker (genealogy is the #1 hobby in the US, and probably also in Australia, UK, and Canada etc.), and help level the playing field with Windows (their transcription solution is currently better than ours).
Kind regards
Ernie
Bob Lang1 wrote:
Oooh! You're such a comedian, etresoft
I aim to please.
As for .NET, the major language for .NET development is C#, and this language is clearly based on Java with a few minor syntax changes. It uses exactly the same object model as Java, and even the underlying technology is similar to the Java Virtual Machine.
I'm not attempting to convince you, just set the record straight.
As long as we are setting the record straight, we should clarify a couple of things. .NET is the "virtual machine" part. You can use C#, J#, VB, or even a slightly twisted variant of C++ with .NET. For those of us who spent a few formative years swearing at MFC, .NET is a significant improvement.
I haven't done much with .NET but I find it to be very much like Cocoa, both in the functionality it provides and the slightly twisted way you have to use it. In Cocoa, you have to use Objective-C or Objective-C++. In .NET, you have to use Microsoft's own slightly strange variants. If you can understand all the brackets, receivers, and messages in Cocoa, you shouldn't have any trouble with all the carets in .NET C++.
You're quite right, it's obviously much less effort to write a program in Cocoa and then re-write it for .NET, than it is it to write it in Java in the first place and run it unchanged on three different platforms. Java is so portable that a Java program written on one platform doesn't even have to be re-compiled to run on another. If you write a program using Cocoa then you limit your market just to Macs - very much a minority platform compared to Windows. Write your program in Java and your market is literally unlimited.
Everything you've said here is correct. Still, every Java program I have ever seen is clearly a "Java" program and usually cannot achieve the same level of integration with the OS that either .NET or Cocoa gives you by default. Java programmers still have to make an effort to ensure that their programs run and run well on platforms they didn't develop it on.
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import java.io.*;
import javax.swing.JOptionPane;
import javax.swing.JFileChooser;
public class BusinessProyect {
public static void main (String args[]) {
String companyName, companyStreet, companyCity, companyState, companyZipCode;
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if (companyName == null) System.exit(0);
companyState = JOptionPane.showInputDialog("Enter Business State");
if (companyName == null) System.exit(0);
companyZipCode = JOptionPane.showInputDialog("Enter Business Zip Code");
if (companyName == null) System.exit(0);
System.out.print("Business Name: ");
System.out.print(" "+companyName);
System.out.print("\nAddress: ");
System.out.print("\t"+companyStreet+"\t");
System.out.print("\n"+"\t"+"\t"+companyCity+",");
System.out.print(companyState+".");
System.out.print(companyZipCode+"\n");
String search = null;
String[] businessProducts = new String[15];
boolean found = false;
System.out.println("\n"+"The Product Sold");
for(int i=0; i<=14; i++)
businessProducts[i] = JOptionPane.showInputDialog(null, "Enter Name Of The Product " + (i+1));
for(int i=0; i<=14; i++)
System.out.println((i+1) + "." + businessProducts);
bubblesort (businessProducts);
System.out.println("\nSORTED NAMES");
for (int i = 0; i < businessProducts.length; i++)
System.out.println(businessProducts [i]);
search = JOptionPane.showInputDialog("Enter name to search.");
for (int i = 0; i < businessProducts.length; i++) {
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found = true;
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} // end if
if (found == false)
JOptionPane.showMessageDialog(null,search+" was not found.");
} // end main
public static void bubblesort (String[] a) {
for(int i=1; i<a.length; i++) {
for(int j=0; j<a.length-i; j++) {
if(a[j].compareTo(a[j+1]) > 0) swap(a, j, j+1);
} // end inner for
} // end outer for
} // end bubblesort
public static void swap (String[] a, int i, int j) {
String h = a[i];
a[i] = a[j];
a[j] = h;
} // end swap
} // end classEdited by: MoonShadow on Mar 13, 2008 6:26 PMHi guys i redo the code and is almost finish only got one last problem... When i search for a product name it gives me the wrong index number if i enter the name of a product that is in 15 it says found index 14 how can i add 1 so it well get the exact one...
import java.io.*;
import javax.swing.JOptionPane;
import javax.swing.JFileChooser;
public class MyFirstProyect2 {
public static void main (String args[]) {
String companyName, companyStreet, companyCity, companyState, companyZipCode;
companyName = JOptionPane.showInputDialog("Enter Business Name");
if (companyName == null) System.exit(0);
companyStreet = JOptionPane.showInputDialog("Enter Business Street");
if (companyName == null) System.exit(0);
companyCity = JOptionPane.showInputDialog("Enter Business City");
if (companyName == null) System.exit(0);
companyState = JOptionPane.showInputDialog("Enter Business State");
if (companyName == null) System.exit(0);
companyZipCode = JOptionPane.showInputDialog("Enter Business Zip Code");
if (companyName == null) System.exit(0);
System.out.print("Business Name: ");
System.out.print(" "+companyName);
System.out.print("\nAddress: ");
System.out.print("\t"+companyStreet+"\t");
System.out.print("\n"+"\t"+"\t"+companyCity+",");
System.out.print(companyState+".");
System.out.print(companyZipCode+"\n");
String businessProducts[] = new String[15], productName;
boolean checkList = false;
int temp, i, j, found;
for (i = 0; i < businessProducts.length; i++) {
businessProducts=JOptionPane.showInputDialog("Enter Name Of Product ("+(i+1)+").");
if (businessProducts[i] == null) {
JOptionPane.showMessageDialog(null, "You cancelled.","NAME SEARCH",JOptionPane.INFORMATION_MESSAGE);
System.exit(0);
System.out.println("\n"+"The Product Sold");
for (i = 0; i < businessProducts.length; i++)
System.out.println((i+1) + "." + businessProducts[i]);
selectionSort (businessProducts);
System.out.println("\nProducts Sold Sorted");
for (i = 0; i < businessProducts.length; i++)
System.out.println((i+1) + "." + businessProducts[i]);
checkList = true;
productName = JOptionPane.showInputDialog("Name Product To Search: ");
if (productName == null) { // user clicked the cancel button
JOptionPane.showMessageDialog(null, "You cancelled.","NAME SEARCH",JOptionPane.INFORMATION_MESSAGE);
checkList = false;
while (checkList) {
found = BinarySearch(businessProducts, productName);
if (found != -1)
JOptionPane.showMessageDialog(null, "Product found on element "+found+".","NAME SEARCH",JOptionPane.INFORMATION_MESSAGE);
else
JOptionPane.showMessageDialog(null, "Product not found"+found,"NAME SEARCH",JOptionPane.ERROR_MESSAGE);
productName = JOptionPane.showInputDialog("Name Product To Search: ");
if (productName == null)
checkList = false;
JOptionPane.showMessageDialog(null, "This Program Has Ended","YOU CANCELLED THE SEARCH",JOptionPane.ERROR_MESSAGE);
public static int BinarySearch (String[] a, String searchValue) {
int left = 0;
int right = a.length - 1;
while (left <= right) {
int midpoint = (left + right) / 2;
if (a[midpoint].compareTo(searchValue) == 0)
return midpoint;
else if(a[midpoint].compareTo(searchValue) < 0)
left = midpoint + 1;
else
right = midpoint - 1;
return -1;
public static void selectionSort (String[] a) {
for (int i = 0; i < a.length - 1; i++) {
int minIndex = findMinimum(a, i);
if (minIndex !=i)
swap(a, i, minIndex);
public static int findMinimum(String[] a, int first) {
int minIndex = first;
for (int i = first + 1; i < a.length; i++)
if(a[i].compareTo(a[minIndex]) < 0)
minIndex = i;
return minIndex;
public static void swap(String[] a, int x, int y) {
String temp = a[x];
a[x] = a[y];
a[y] = temp;
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