Dao Lam,
Here are some other things to try:
- Make sure your project is using either:
- The workspace default (That assumes that the default is your the jdk installation you just added. From the window where you added it, make sure it is checked.),
- The jdk version, or
- An execution Environment that uses the jdk version.
- Pull up your system's environment variables, and add this path to it: (jdk_dir)/jre/bin. (Remember, you'll have to restart Eclipse once you've saved that to get it to take).
- Close eclipse, and modify the shortcut you are using to start it to use (jdk_dir)/jre/bin.
I've found that any one of these measures will allow Eclipse to find the attach.dll.