Changing Different Versions of Java on Windows

Check path environment variable

Check Java home environment variable

Replacing the following three files under C:\Program Files (x86)\Common Files\Oracle\Java\javapath with the right ones.

• java.exe
• javaw.exe
• javaws.exe

Configuring registry settings using regedit.exe:

Key: HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment
Name: CurrentVersion
Value: 1.8