Java Point class in Processing 2.0b9

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warden56

Java Point class in Processing 2.0b9

in General Discussion • Other • 5 months ago

Recently I have been working my way thru Ira Greenberg's book Creative Coding. All the coding examples are in pre-2.x versions of Processing (most examples dated 2005 & 6). So far I've been working my way successfully thru the book using versions 2.0b6 to 9. In his chapter 7 when he discusses working with Bezier curves in some examples he uses the Java Point class. I am not having any success running these in 2.0b9 (or b6 ). It throws this error: 'Cannot find a class or type named "Point"'. Needless to say I've double checked it for syntax errors, etc. Eventually I downloaded his example files and loaded the copied code to see if they would be successful (minus my errors). They are not. None of the chapter 7 examples using Java Point Class work... all throw the 'Cannot find ... Point" error. I am very much a novice to coding (and loving Processing given this)... so I am not sure if the error is due to changes in Java since 2005, or if I need to go back further to a pre-2.x version of Processing. Any thoughts? Have others noticed this yet?

Replies(5)

calsign

Re: Java Point class in Processing 2.0b9

5 months ago

The code is probably looking for Java AWT's Point class. In 2.0, they have removed a lot of the imports to a lot of unnecessary classes like Point. However, old code that relied on those classes has broken since. Fortunately, there's an easy solution; add this line of code to the top of any sketch that has the error:

import java.awt.Point;

warden56

Re: Re: Java Point class in Processing 2.0b9

5 months ago

Thanks calsign this is even better than the advice to move back to 1.5x... Thank you!... the sketches are running fine now.

warden56

Re: Java Point class in Processing 2.0b9

5 months ago

found a good post about this just now: https://forum.processing.org/topic/using-java-classes Thanks.

v.k.

Re: Java Point class in Processing 2.0b9

5 months ago

also:

http://wiki.processing.org/w/Cannot_find_a_class_or_type_named_%22Xxx%22

PhiLho

Re: Java Point class in Processing 2.0b9

5 months ago

I renamed the article from using Xxx to using Xyz (wasn't sure if SomeType was clearer or more confusing...) to avoid what you experienced again, Zoho marking your post as spam.

Also renamed it in the https://forum.processing.org/topic/cannot-find-a-class-or-type-named-xxx sticky post, and in the Technical FAQ page, I forgot them, so your error was useful, after all!

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