Comments on Mind the gap: Knopflerfish OSGi tutorial

Thanks Kit.

2007-08-05T03:00:00.000+01:00

Thanks Kit.

Just a "nit"...The jar command should be:jar cfm H...

2007-07-29T02:26:00.000+01:00

Just a "nit"...

The jar command should be:

jar cfm HelloWorld.jar Manifest.MF HelloWorld.class

NB the manifest should have:Import-Package: org.os...

2007-02-12T02:11:00.000Z

NB the manifest should have:

Import-Package: org.osgi.framework;version=1.3.0

since Equinox 3.3 has more strict checking than Equinox 3.2 did.

perfect

2007-02-06T16:37:00.000Z

perfect

:-) --- >8 --- HelloWorld.java import org.osgi.f...

2007-02-06T16:23:00.000Z

:-)

--- >8 --- HelloWorld.java
import org.osgi.framework.*;
public class HelloWorld implements BundleActivator {
public void start(BundleContext context) {
System.out.println("Hello World");
}
public void stop(BundleContext context) {
System.out.println("Goodbye World");
}
}
--- >8 --- Manifest.MF
Manifest-Version: 1.0
Bundle-Name: HelloWorld
Created-By: Alblue
Bundle-Activator: HelloWorld
Bundle-SymbolicName: HelloWorld
Bundle-Version: 1.0.0
--- >8 ---
javac -cp framework.jar HelloWorld.java

jar cfm Manifest.MF HelloWorld.class

Better?

Not that easy! ;-) Coding it yourself (albeit usi...

2007-02-06T14:45:00.000Z

Not that easy! ;-)

Coding it yourself (albeit using cut and paste), removes any sense of 'smoke and mirrors'.

Easy? You want easy? In Knopflerfish, go to 'Fil...

2007-02-06T14:11:00.000Z

Easy? You want easy?

In Knopflerfish, go to 'File->Open URL'. Then paste in http://www.bandlem.com/HelloWorld.jar.

Lo, it says Hello world. Stop it, it says Goodbye World. Start it again, and it says Hello world.

Now that's easy.

PS You really shouldn't install remote code; you never know what it's doing ;-) But it comes with full source (ahem, one class) in case you want to build it yourself.