I want to install a J2EE SDK on the machine and practice how to deploy EJB, but the downloaded J2EE SDK does not respond after every step of installation. I am very puzzled, I installed the system once before, and it was very successful. I almost re-installed the system. Today, I went online and found the corresponding solution by chance, more detailed information can be viewed in the http://wiki.java.net/bin/view/Projects/InstallProblems, where all issues that may occur during the installation of the J2EE pe are listed. The following is a detailed description.
Problem description: On the installation directory selection page, click Next and the installation process is terminated.
Solution: Go to the Windows/system32 directory and delete all files starting with productregistry.
This problem occurs because the installation or uninstallation of the previous J2EE 1.4 SDK is not completed properly, and the file controlling access to the component registration file is locked.
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