<tl;dr> To fix the Eclipse “No Java virtual machine was found” error, simply edit the eclipse-inst.ini file and add the -vm flag, which points it to the java utility in the JDK bin directory: ...

If the \bin directory of the JDK or JRE is not added to the Windows or Linux PATH variable, programs may not be able to find it at runtime. This would certainly cause the “Java not recognized” error, ...