Uninstall the old version of the computer java way.

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Once work, I suddenly found the control panel of java, click the application can not be found will be displayed. I know this Java application problems, and then wanted after unloading, I was also in the Internet to find a lot of ways on uninstalling java application, but it does not seem the right way to uninstall java find no clean uninstall, leading to later re-download new java application, or it will show the same problem. But hard on its hands for a while I do not know how to do, and later installed a virtual machine in their own computers, in the virtual machine and install a new Windows system, then re-install Java applications, only display properly.
Today saw a post https://www.java.com/zh_CN/download/faq/remove_olderversions.xml then remembered this problem, uninstall the old version of the computer's Java According to this post, then re-install the new version, the previous the problem is also gone. Ah, Oh Oh Oh Oh.