By default, Internet Explorer (IE) 5.X and 6.0 in Windows 9X, 2000, or NT uses Microsoft's implementation of Java, called the Microsoft Virtual Machine (MSVM). This VM can also handle applets compiled with Sun's Java Development Kits JDK 1.0.2 and 1.1.8. This is the case for nutation NMR applets in the present site.
We plan to introduce Swing components for our future applets, which require Sun's Java Development Kit J2SE v1.2 SDK or higher to compile applet source codes. If you use IE for Windows, you should download and install Sun's Java plug-in, which is provided in the runtime environment (J2SE JRE) software package.
Windows XP may not install MSVM on your machine. As a result, you have to install Sun's Java plug-in.
If J2SE v1.4.2_05 JRE is downloaded and installed properly, you should check three panels: (1) the Control Panel of Windows, (2) the Advanced tab of Internet Options panel, (3) the Control Panel of Java plug-in.
(1) The Windows Control Panel must contain the Java plug-in (coffee cup) icon.
(2) First you double click the Internet Options icon in the Windows Control Panel, then you select the Advanced tab. You should see Use Java 2 v1.4.2_05 for <applet> under the Java (Sun) section and above the Java VM section for Microsoft.
(3) First you double-click the Java plug-in icon in the Windows Control Panel to launch Java(TM) Plug-in Control Panel, then you select the Browser tab. Microsoft Internet Explorer should be selected during installation.
Sun provides an applet for testing your Java VM, as well as help and FAQ for downloading and installing troubleshoot. If Sun's Java plug-in is properly installed, each time you download a web page containing an applet, the Java plug-in icon will appear in the system tray. It will disappear when you close IE.