Windows manages multiple versions of Java-solutions to ' has value ' 1.8 ', but ' 1.7 ' is required ' method

The company takes into account the code's sustainable maintenance, requires all use of java7, and wants to learn some JAVA8 's new features in idle time, so after installation of 1.7 and installed 1.8, resulting in eclisp in the start times ' have value ' 1.8 ', but ' 1.7 ' is Required ' ERROR, the query found in console use, Java -version will still be reported ' has value ' 1.8 ', but ' 1.7 ' is required ' error, as follows

1 C:>java-23 has the value ' 1.8 ', but '1.74  5 error:could not find Java SE Runtime environment.

Here, only 1.7 is configured in the environment variable, and no environment variable value is configured for 1.8.
After a period of groping, the system default JDK can be restored to 1.7 by modifying the following steps:

1. Modify the Registration Form

Open Hkey_local_machine\software\javasoft
Modify the CurrentVersion value in Java Development Kit and Java RUNTIME Environment respectively to 1.7

2. Replacing files

Copy the Java.exe Javaw.exe Javaws.exe in%java7_home%\bin to C:\windows/system32 and C:\Windows\SysWOW64 and replace the original file. Copy the shortcuts of the above three files to C:\ProgramData\Oracle\Java\javapath and replace the original files

If you do not replace the file, the following problems may occur;

C:>java-version error:registry key ' Software\javasoft\java Runtime environment ' \currentversion ' has value ' 1.8 ', but ' 1.7' is required. Error:could not find Java.dll error:could not find Java SE Runtime environment.

3, java -version the implementation of verification

1 C:>java-2 Java version "1.73 java (TM) SE Runtime Environment (build 1.) 7.0_25-4 Java HotSpot (TM) 64-bit Server VM (build 23.25-b01, Mixed mode)

Windows manages multiple versions of Java-solutions to ' has value ' 1.8 ', but ' 1.7 ' is required ' method