Allow Windows 7 To Open Jar Files

James AsherLeave a comment

On my new Windows 7 desktop, I tried to open a .jar file, only to be rebuked. And lo, after some Googling, there is. Here’s how:

  1. Go to the run box and type in cmd. Instead of hitting Enter, use Ctrl + Shift + Enter.This will run the command prompt with Admin rights.
  2. A dialog box should pop up notifying you of what you’re doing and you have to confirm it. Annoying.
  3. Type this in to the command line: assoc .jar=CompressedFolder. Press Enter
  4. Profit!

There you have it kids. Windows 7 opens .jar files like they were .zip files.

 

GWT URL.decode causes UnsatisfiedLinkError

James AsherLeave a comment

This is an easy error to get when you aren’t paying attention. What happened is you included com.google.gwt.http.client.URL on the server-side to try and decode an encoded URL. What you want to use is java.net.URLDecoder. Also related, the string is by default encoded UTF-8, so decode like this: String s = URLDecoder.decode(string, “UTF-8”);

Maybe someone else will find this instead of having to search for it.

Does GWT Support SimpleDateFormat?

James Asher5 Comments

No. At least not at the time of this post. I think there are a few projects around on Sourceforge or Google Code. I’d suggest using DateTimeFormat in the com.google.gwt.i18n.client package.

It took me a little Googling to figure this out, so maybe this post will help someone in the future.