Kindlet Dev SOS: Main class not found

cubemike99 · 02-08-2013, 10:32 PM

I'd love to attempt to write a Picross kindlet, but I can't even get a basic "Hello World" to run. However I try to package it, I get a "Main class not found" error. What the heck am I doing wrong? Thanks in advance for your help.

FYI, I'm on a Paperwhite running 5.3.3.

Here is the current version of my kindlet: http://www.mediafire.com/download.php?dbvb7oxe1eddne0

twobob · 02-08-2013, 10:45 PM

I'm no expert... but is your err... Package right?

I attached a piccy of a working building thingy. that look familiar?

twobob · 02-08-2013, 10:48 PM

Quote:

Originally Posted by cubemike99

I'd love to attempt to write a Picross kindlet, but I can't even get a basic "Hello World" to run. However I try to package it, I get a "Main class not found" error. What the heck am I doing wrong? Thanks in advance for your help.

FYI, I'm on a Paperwhite running 5.3.3.

Here is the current version of my kindlet: http://www.mediafire.com/download.php?dbvb7oxe1eddne0

Which Hello world. From where. Building with what. Eclipse? Ant?

What OS. Do you know java? etc...

I looked at your package.

Main-Class: HelloTest.Main

shouldnt that be at least... HelloTest/Main.class

I dont see a file named HelloTest.Main ?

stuff like that.

cubemike99 · 02-08-2013, 10:59 PM

It's my own version of a hello world. I'm on Ubuntu without an IDE. And as to the Main-Class, package folders are separated by dots, not slashes, wherever I've seen them.

twobob · 02-08-2013, 11:12 PM

Right. fair enough.

I'm not arguing. point it at a file that exists then.

There are several hello worlds out there. not to mention a few decent example fuller apps and big long wiki entry.

I have written a fair few test kindlets now. basic but they ran. on a 3 and 5.
That misdirected call the the main class is the first glaring error. Hope that helps.

twobob · 02-08-2013, 11:14 PM

This and this are the kind of thing I am talking about... looks like your issue kinda.

https://www.mobileread.com/forums/sho...2&postcount=43

https://www.mobileread.com/forums/sho...0&postcount=44

ixtab · 02-09-2013, 06:41 AM

First: *use* an IDE. They're good.

Second: package names should be all lowercase, not camel-case. This might be the reason why your program fails (but probably isn't).

Third: You're not overriding any of the methods of AbstractKindlet. So even if your Kindlet did start, it wouldn't do anything.

Fourth: Otherwise, your META-INF/MANIFEST.MF looks ok (at first glance), but I don't have any device around right now to do further testing. Fix the abovementioned problems first...

And, as twobob said, you might be better off starting from a known-working hello world example.

knc1 · 02-09-2013, 09:38 AM

cat > helloworld.java
Real programmers do it this way.
^D

02-08-2013, 10:32 PM	#1
cubemike99 Enthusiast Posts: 37 Karma: 260446 Join Date: Feb 2013 Device: Kindle Paperwhite	Kindlet Dev SOS: Main class not found I'd love to attempt to write a Picross kindlet, but I can't even get a basic "Hello World" to run. However I try to package it, I get a "Main class not found" error. What the heck am I doing wrong? Thanks in advance for your help. FYI, I'm on a Paperwhite running 5.3.3. Here is the current version of my kindlet: http://www.mediafire.com/download.php?dbvb7oxe1eddne0

02-08-2013, 10:45 PM	#2
twobob ( ͡° ͜ʖ ͡°){ʇlnɐɟ ƃǝs}Týr Posts: 6,586 Karma: 6299991 Join Date: Jun 2012 Location: uti gratia usura (Yao ying da ying; Mo ying da yieng) Device: PW-WIFI\|K5-3G+WIFI\| K4\|K3-3G\|DXG\|K2\| Rooted Nook Touch	err I'm no expert... but is your err... Package right? I attached a piccy of a working building thingy. that look familiar? Attached Thumbnails

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02-08-2013, 10:59 PM	#4
cubemike99 Enthusiast Posts: 37 Karma: 260446 Join Date: Feb 2013 Device: Kindle Paperwhite	It's my own version of a hello world. I'm on Ubuntu without an IDE. And as to the Main-Class, package folders are separated by dots, not slashes, wherever I've seen them.

02-08-2013, 11:12 PM	#5
twobob ( ͡° ͜ʖ ͡°){ʇlnɐɟ ƃǝs}Týr Posts: 6,586 Karma: 6299991 Join Date: Jun 2012 Location: uti gratia usura (Yao ying da ying; Mo ying da yieng) Device: PW-WIFI\|K5-3G+WIFI\| K4\|K3-3G\|DXG\|K2\| Rooted Nook Touch	Right. fair enough. I'm not arguing. point it at a file that exists then. There are several hello worlds out there. not to mention a few decent example fuller apps and big long wiki entry. I have written a fair few test kindlets now. basic but they ran. on a 3 and 5. That misdirected call the the main class is the first glaring error. Hope that helps.

02-08-2013, 11:14 PM	#6
twobob ( ͡° ͜ʖ ͡°){ʇlnɐɟ ƃǝs}Týr Posts: 6,586 Karma: 6299991 Join Date: Jun 2012 Location: uti gratia usura (Yao ying da ying; Mo ying da yieng) Device: PW-WIFI\|K5-3G+WIFI\| K4\|K3-3G\|DXG\|K2\| Rooted Nook Touch	This and this are the kind of thing I am talking about... looks like your issue kinda. https://www.mobileread.com/forums/sho...2&postcount=43 https://www.mobileread.com/forums/sho...0&postcount=44

02-09-2013, 06:41 AM	#7
ixtab (offline) Posts: 2,907 Karma: 6736092 Join Date: Dec 2011 Device: K3, K4, K5, KPW, KPW2	First: use an IDE. They're good. Second: package names should be all lowercase, not camel-case. This might be the reason why your program fails (but probably isn't). Third: You're not overriding any of the methods of AbstractKindlet. So even if your Kindlet did start, it wouldn't do anything. Fourth: Otherwise, your META-INF/MANIFEST.MF looks ok (at first glance), but I don't have any device around right now to do further testing. Fix the abovementioned problems first... And, as twobob said, you might be better off starting from a known-working hello world example.

02-09-2013, 09:38 AM	#8
knc1 Going Viral Posts: 17,212 Karma: 18210809 Join Date: Feb 2012 Location: Central Texas Device: No K1, PW2, KV, KOA	cat > helloworld.java Real programmers do it this way. ^D

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