If i have a class and i want to say, subtract it from another of it's type, how would i add a function that told the class what to do when the subtract symbol was used? Thanks :)
Java does not support operator overloading.
Not gonna happen in Java.
To elaborate on these answers: the behaviour you describe is known as operator overloading, and isn't something Java supports (or will ever support, in all probability).
If you want a similar language to Java that supports this feature I (and basically everyone else) recommends C#, which takes the basic idea of Java, and makes a very nice programming language out of it.
Other than this, your best bet is methods with names like add, subtract, multiply etc.
This might sound silly, but I don't like the idea of C# being developed, maintained and copyrighted closed source and owned by Microsoft.
It does, because it's not true.
Oh, i see. Thanks. So you all recomend just fucking java and starting w/ C#?
If you have the option then I personally would recommend that.
I actually prefer python to C#, but C# is more widely used and supported. It is a nicer language to work with than Java, certainly.
I use C#, prefer it over Java in every way possible.
If you're stuck with java though, perhaps instead of:
result = obj1 - obj2;
Create a Remove method on the obj1/obj2 class:
result = obj1.Remove(obj2);
Instead of using operator overloading.
Starts getting really messy when you're subtracting more than two objects though.
[QUOTE=gilly_54;22599178]Starts getting really messy when you're subtracting more than two objects though.[/QUOTE]
Why?
result = obj1.Remove(obj2).Remove(obj3);
Gets even messier when you're doing stuff with BigNum or something where you use lots of operators.
[cpp]
var x = new BigNum(3);
var y = new BigNum(4);
// without operator overloads
var hypotenuse = x.Times(x).Add(y.Times(y)).SquareRoot();
// with operator overloads
var hypotenuse = Math.Sqrt(x*x + y*y);
[/cpp]
Right, since im not doing this for a job, just because i want to learn a useful language (lua doesn't count) ill go see what i can do with C#. Anyone know a good tutorial/project site for it? Also, is the software IDE and crap free?
[editline]12:40PM[/editline]
With C# do i have to use forms? I'd really rather not, can i do like in java just do like an applet, where it doesnt have the terrible ugly huge top bar and a terrible background and shit like that? Thanks :P
... The fuck?
You can use silverlight to make browser embeddables, and there are options for changing the window decorations, but that doesn't really make that much sesne to me...
If you want to embed it in a webpage use java or flash depending on your needs.
Use console. For everything.
But no, you obviously do not have to use a form. In fact, you don't have to use a console app either. And of course, you don't need to have the title bar or anything for a form in the first place.
[QUOTE=bobthe2lol;22632949]Right, since im not doing this for a job, just because i want to learn a useful language (lua doesn't count) ill go see what i can do with C#. Anyone know a good tutorial/project site for it? Also, is the software IDE and crap free?
[editline]12:40PM[/editline]
With C# do i have to use forms? I'd really rather not, can i do like in java just do like an applet, where it doesnt have the terrible ugly huge top bar and a terrible background and shit like that? Thanks :P[/QUOTE]
There's Visual Studio Express (the free version of Visual Studio).
[QUOTE=bobthe2lol;22632949]With C# do i have to use forms? I'd really rather not, can i do like in java just do like an applet, where it doesnt have the terrible ugly huge top bar and a terrible background and shit like that?[/QUOTE]
By "terrible ugly huge top bar", do you mean the window's titlebar? Windows Forms applications are hardly unique in having titlebars. They look pretty much like any other application, in fact -- there's no special background or anything like that. Maybe you're thinking of some particular application you've seen that has a poor UI?
Java applets aren't standalone applications; they live inside a browser. As others have mentioned, you can use Silverlight to make .NET "applets" that live inside a browser, but unless the program is actually part of a web page, that's probably not what you want.
[QUOTE=Wyzard;22674558]By "terrible ugly huge top bar", do you mean the window's titlebar? Windows Forms applications are hardly unique in having titlebars. They look pretty much like any other application, in fact -- there's no special background or anything like that. Maybe you're thinking of some particular application you've seen that has a poor UI?
Java applets aren't standalone applications; they live inside a browser. As others have mentioned, you can use Silverlight to make .NET "applets" that live inside a browser, but unless the program is actually part of a web page, that's probably not what you want.[/QUOTE]
And even if the programme is part of a web page, Silverlight is probably not what you want. In that case, use something like Javascript with ASP.NET.
[QUOTE=arienh4;22675328]In that case, use something like Javascript with ASP.NET.[/QUOTE]
Unless you want to do something that Javascript doesn't let you
[QUOTE=turb_;22676442]Unless you want to do something that Javascript doesn't let you[/QUOTE]
Hence I said with ASP.NET. There's not much the combination won't let you do.
[QUOTE=arienh4;22680542]Hence I said with ASP.NET. There's not much the combination won't let you do.[/QUOTE]
I was referring to Silverlight when I was talking about stuff Javascript doesn't let you do.
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