Man kan sikkert have flere versioner liggende, alligevel anbefaler SUN
nedenstående (uddrag fra:
http://java.sun.com/j2se/1.4.1/install-windows.html)
1.
Check the download file size
If you save the self-installing executable to disk without running it from the download page at the Java Software web site, notice that its byte size is provided on the download page. Once the download has completed, check that you have downloaded the full, uncorrupted software file.
2.
Uninstall any Prior Version of the Java 2 SDK
If you have previously installed another version of the Java 2 SDK, uninstall it. Use the Microsoft Windows Add/Remove Programs utility, accessible from the Control Panel (Start --> Settings --> Control Panel).
3.
Run the Java 2 SDK installer
Lige et tillægsspørgsmål, hvorfor egentlig have flere versioner på samme maskine ???