Registry key Error: Java version has value ‘1.8’, but ‘1.7’ is required

Problem Description:

1. Jdk1.7.0 is installed first_ After 80, jdk1.8.0 was installed_ 181. The former is configured in the environment variable
2. The following error occurs when entering Java – version in CMD:

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.

Problem solving:

When upgrading from jdk1.7 to JDK1.8, there are three things to confirm:

1. System environment variables

2. Registry

Computer \ HKEY_ LOCAL_ MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment

3. Update java.exe javaw.exe javaws.exe under C: \ windows \ system32

Error caused by too many versions of JDK installed on the computer

For example, there was no problem installing 1.7

After installing 1.8 and modifying the environment variables, the java.exe javaw.exe javaws.exe under C: \ windows \ system32 is still in the 1.7 installation package.

Just replace the java.exe of 1.7 with Java 1.8.