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Comments:
<0> rickety: :::O)
<1> hehe
<1> java newbie beginner here..just 1 week at java and OOP..:(
<1> cant get used to the system..thanks for any attention here..
<2> Setx is a bad name, setX is better.
<3> hi
<2> Ditto for getX.
<0> setters ****.
<0> :)
<1> sorry this was a given code :(
<2> Line 34 will give a NullPointerException.
<1> hm it breaks on the Emvado method...
<2> Line 40 will not compile, you're trying to use the return value of a method that doesn't have a return value.
<1> [emvado = area in greek]
<1> yes
<1> thats my prob
<1> how can i store
<1> the points..
<1> so that i can calculate the area; sorry for broken text here...:(
<2> They're already stored.
<2> They're in p2 and p1.
<1> and how do i write this in the return ;
<2> Do you mean "how can I get the values?"?
<1> hmm
<1> yeap!
<0> second constructor: do p1 = new Point (x1, y1); p2 = new Point (x2,y2);
<0> instead of setting to nonexisting points
<2> You want to know how to *get* the *x* value from a *Point*?
<1> one at a time :)
<2> motel: Kindly explain what lines 23 and 28 do.
<2> 23 to 28, inclusive, I mean.
<0> oh btw
<0> why do you invent your own Point's
<1> ah they give the x and y given before in Setx Sety...
<0> did your instructor told you so?
<0> :)
<1> what do you mean there;
<0> java.awt.Point
<0> java.awt.Rectangle
<2> motel: But you're not using them. That suggests that you probably should be using them, or they shouldn't be there.
<0> :P
<2> java.awt.Point uses doubles in its API, iirc.
<1> rickety yeap you're right..
<2> I reimplemented Point in my code ;)
<1> hmm lets see how i can use these..
<0> rickety: so what...
<0> i do point.x point.y
<0> never getX
<2> I use interfaces where possible/practical.
<1> BUILD SUCCESSFUL (total time: 0 seconds)
<2> I don't use point.x and point.y because it's inconsistent with the rest of my codebase.
<0> calling function makes ~20 ***embler commands, getting value directly at most 3.
<1> return (p2.Getx()-p1.Getx())*(p2.Gety()-p1.Gety());
<0> :))
<2> motel: Now await the NullPointerException.
<1> hm..
<1> hmm
<0> rickety: i try to avoid lame function calls
<1> how can i produce this error?:)
<2> motel: Don't worry, you will.
<2> wolfey: HAHAHAHA
<0> # public cl*** Rectangle{
<0> # public Point p1;
<0> # public Point p2;
<0> #
<2> wolfey: Go on, tell me why. I could do with a laugh.
<0> motel: if you want this way: public Poin
<0> public Point p1 = new Point();
<0> public Point p2 = new Point();
<0> dont set values on null references
<2> wolfey: I do actually recommend that way to beginners, especially those who don't understand constructors.
<2> I also recommend final on fields, to people of middling ability.
<0> what way?
<2> public fields.
<1> rickety he asked for private..for some reason..
<0> :))
<2> motel: It's called encapsulation. It's a good practice, but newbies often get confused by getX and setX kind of methods.
<1> i can tell why !;)
<1> hey..once you start to get used to the object method cl*** thing..
<0> LESSON 35234523: If you provide setters, make variables private. You need setters if you calculate other variables from one being set.
<1> it's really smart..:)
<2> wolfey: http://en.wikibooks.org/wiki/Java_Programming/Preventing_NullPointerException
<0> im too lazy to read
<0> anything i dont yet know?
<2> I'm too lazy to read your mind.
<0> i did from java2d through swing to rmi, sql and xml
<0> i know how to solve null ponters
<0> pointers
<0> :)
<1> ehm...where's the main cl*** now..dammit
<2> Preventing and solving are different.
<0> well error doesnt exist until i see it
<0> then i fix it
<1> hmm
<2> If it takes you X seconds to fix an NPE, and X-Y seconds to prevent an NPE, then over a year that might add up to a few extra drinks in a pub.
<2> Where Y is positive and less than X.
<0> ::)))
<0> i love you rickety
<0> you fun
<0> :)
<1> http://hashphp.org/pastebin.php?pid=6482
<1> hm my NETBEANS sais it cant find the main cl***...
<0> :)
<0> default is Main
<4> are you trying to run it from the Point cl*** ?
<2> motel: Exit Netbeans.
<2> wolfey: Just for fun: http://www.swingwiki.org/best:using_a_factory
<1> done
<2> motel: You have no main method.
<1> public void main(String[] args) {
<1> Rectangle R = new Rectangle(2,2,1,1);
<1> System.out.println(R.Emvado());
<1> }
<1> }
<1> ?..
<4> its not static
<1> so much to learn... :-/
<1> hm..still no run
<2> What error?
<1> no main cl*** found
<4> cl*** ?
<2> motel: That error is from Netbeans. You said you'd exited Netbeans.
<1> rickety and run it from command?
<2> Yep.
<1> can you explain why?:)
<4> Will the Points be created as long as you're calling the other constructor ?
<2> Or from an editor. Newbies shouldn't use IDEs.
<1> i dont get it:(
<2> IDEs obscure processes, mainly because they're intended for non-newbies. This confuses newbies.
<1> Point is my main cl***..
<1> i see.!
<2> motel: Where is your main method?
<1> at the end of the code..
<1> ;
<2> What is the name of the cl*** it is in?
<1> public cl*** Point{
<4> no
<2> motel: Try formatting your code, and read again.
<1> hm..
<1> i dont know what should inside the { } of the other...
<4> hmm.. I dont see a closing } for the Point cl***, is the pastebin correct ?
<1> should cl*** point have all in the { } ?
<1> yep..pastebin correct,me wrong
<1> grmf..too many { } , lost it now completely
<0> rvsjoen: are you the one that tried my game?:)
<4> yes
<4> its still sitting on my desktop
<4> :P
<2> motel: Ok, you seem to have a cl*** inside a cl***, which, for a newbie is WRONG.
<0> 'final' version http://86.61.29.5/homepage/
<0> rvsjoen: ...
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