I have some measured success. I was able to get a C program to work at capturing a frame from a webcam in both Java and Ruby, the big problem is is memory.
So I went back to JFM (Java Media Framework) but I am having all kinds of inconsistent issues. Sometimes it works with Groovy, [...]

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I was struggling for a bit on languages, which one to use, there are so many, do I use PHP, Ruby, Groovy, Python, or Jython or JRuby. I have settled on them let me summarize:

PHP - All my web programming will be in this language and my own custom framework.
Java - All my AI & [...]

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I was doing some benchmark testing on my robotics programs for vision testing and I got some interesting results. For the most complicated program Java took 5312ms, Groovy took 5453ms, and JRuby took 5531ms.
I was amazed at how close they were given that all the computer shootouts say that Groovy is slow and JRuby is [...]

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I used this to test Video For Windows and the Java Media Framework (JMF) for my robotics code. If you install the JMF this should work fine for displaying the image from your webcam.

public class WebCamViewer extends SimpleSwing {

private Timer timer = new Timer();
private GetFrame getFrame;
private ImagePanel [...]

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I wrote this to launch some batch files from within an Java program.

public class CmdExec {

// process invoking program will call
private Process p;

// empty constructor
public CmdExec() { }

// execute command
public [...]

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I used this code to get images and text from the web. First an image:

public static BufferedImage getImage(String urlString)throws Exception {
// construct URL
URL url = new URL(urlString);
// [...]

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I use this often in my robotics code. The reason is simple, it takes the robots time to do things and I need to wait for a microcontroller to perform some action, like get a sensor reading, or move a certain distance, or change heading. It’s very simple, but I will add more robotics code [...]

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I did this using the rubygem Java-Ruby-Bridge. I did this because I was having problems with JRuby and wanted to execute my class from within Ruby.
Here is a simple way to do it, as long as you remember the classpath.
require ‘rjb’
Rjb::load(classpath = ‘../../TestJava/bin’, jvmargs=[])
test = Rjb::import(’Test’)
c = test.new
c.foo3
This way I was able to invoke a [...]

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