如何检查我的已安装程序需要哪个Java版本
[英]How to check which of my installed program needs which version of Java
问题描述
I'm hoping to learn if there is a method to determine what version of Java each one of my installed programs is using/depended on, if they are using it. 
我希望了解是否有一种方法可以确定每个安装的程序使用/依赖的Java版本（如果正在使用）。
I have several different versions of Java installed on my machine and wanted to make sure which ones I can uninstall without breaking any of the installed programs. 我在计算机上安装了几种不同版本的Java，并希望确保可以在不破坏任何已安装程序的情况下卸载哪些Java。 I really don't want to have to uninstall them all (one at a time) and then try running each of the programs individually to check if it's working or not. 我真的不想完全卸载它们（一次卸载），然后尝试分别运行每个程序以检查其是否正常运行。 Or is that really the only way? 还是那真的是唯一的方法？
2 个解决方案
解决方案1
0 2017-01-25 14:44:54
Check the version of Java in path environment variables. 在路径环境变量中检查Java版本。 Your machine uses only this version. 您的机器仅使用此版本。 Or on the Windows command line, javac -version . 或在Windows命令行上， javac -version 。
解决方案2
0 2017-01-25 16:27:57
There is no common way to solve this problem. 没有解决此问题的通用方法。 Some programs use the JAVA_HOME setting to start, some use startup scripts variables, etcetera. 一些程序使用JAVA_HOME设置启动，一些程序使用启动脚本变量等。 You have to test all your programs. 您必须测试所有程序。
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