I'm wondering if anyone can help with this. I'm learning Android Dev with Eclipse and trying to run the 'hello world' but when I try to run 'android create avd -t 4 -n my_avd' in the command prompt i get the following error, 'java' is not recognized as an internal or external command, operable program or batch file. SWT folder '' does not exist. Please set ANDROID_SWT to point to the folder containing swt.jar for your platform. Any help will be much appreciated!