备注:主要为JDK1.7和JDK1.8之间进行切换
1.每次进行JDK切换时,都需要修改JAVA_HOME
![](https://www.codeprj.com/image/aHR0cHM6Ly9pbWFnZXMyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTA5MTYyNi8yMDE4MDQvMTA5MTYyNi0yMDE4MDQxMDA5NDkzMDk4OS01MDA0MDE1MTQucG5n.png)
2.编辑path环境变量,如图所示,将%JAVA_HOME%\jre\bin和%JAVA_HOME%\bin移到最上边两栏
![](https://www.codeprj.com/image/aHR0cHM6Ly9pbWFnZXMyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTA5MTYyNi8yMDE4MDQvMTA5MTYyNi0yMDE4MDQxMDA5NTMxOTgyNi05ODIzODA4OTYucG5n.png)
3.在开始工具栏java文件加下配置java的应用程序,选择启用的jdk版本
![](https://www.codeprj.com/image/aHR0cHM6Ly9pbWFnZXMyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTA5MTYyNi8yMDE4MDQvMTA5MTYyNi0yMDE4MDQxMDA5NTU0NjMyOS0xODUzMjQ0NzIyLnBuZw==.png)
4.修改计算机中Java的注册表信息
win+r 弹出运行窗口输入regedit,进入界面“注册表编辑器”,然后在找到 HKEY_LOCAL_MACHINE\ Software\JavaSoft\Java Development Kit \CurrentVersion 修改版本
HKEY_LOCAL_MACHINE\ Software\JavaSoft\Java Runtime Environment \CurrentVersion 修改版本
![](https://www.codeprj.com/image/aHR0cHM6Ly9pbWFnZXMyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTA5MTYyNi8yMDE4MDQvMTA5MTYyNi0yMDE4MDQxMDEwMDEwMjE5Ni0zMTk1MzUxNzIucG5n.png)
5.此时打开cmd窗口,输入Java -version 进行检测出
![](https://www.codeprj.com/image/aHR0cHM6Ly9pbWFnZXMyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTA5MTYyNi8yMDE4MDQvMTA5MTYyNi0yMDE4MDQxMDEwMDMxNjU4Ni03MDY3NTY5NDMucG5n.png)
居然报错,不应该啊!!!
Error: Registry key 'Software\JavaSoft\Java Runtime Environment'\CurrentVersion' has value '1.7', but '1.8' is required. Error: could not find java.dll Error: Could not find Java SE Runtime Environment.
6.出现该报错信息主要有一下几种情况
6.1 因为注册表中一个键项被本地化成中文名字了. [HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\java运行时环境] 改成: [HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment] 然后再按f3,一直把找到的“java运行时环境”java运行时环境“全部都改掉为止。
6.2 删除C:\Windows\System32文件下的java.exe,javaw.exe和javaws.exe这三个执行文件即可
7. 再次检测,OK!!!
![](https://www.codeprj.com/image/aHR0cHM6Ly9pbWFnZXMyMDE4LmNuYmxvZ3MuY29tL2Jsb2cvMTA5MTYyNi8yMDE4MDQvMTA5MTYyNi0yMDE4MDQxMDEwMTExMDcxNS0yNDc1MTk3OTMucG5n.png)
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