When you install JDK, you will also install a JRE environment in the system directory. I started to uninstall the JRE environment installed in the system directory, add a variable java_home in the environment variable, and set the value of "f: / j2sdk" (JDK installation directory), add "% java_home% in the PATH variable" / bin; ". Start Eclipse, you can find everything, click on the menu "window" -> Preferences -> java-> installed JRE, you can find a JRE with a name "J2SDK". First, change the JDK installation directory name "F: / J2SDK" to "f: / no2sdk" (casually, or remove "% java_home% / bin;") in the PATH variable, start Eclipse, It is found that Eclipse cannot start and appears as follows:
It is mainly to find a Java runtime environment (JRE). Due to the jRE directory in the Eclipse directory, the correct JavaW execution path is not found in the PATH variable. So Eclipse cannot start. Solving the problem: 1. In the MS-DOS window, switch to the Eclipse directory, execute Eclipse -VM f: / noj2sdk / bin / javaw, you can start Eclipse (Eclipse -VM Dir-Location parameter can be used to specify other JRE.). 2. Copy the JRE directory in the F: / noj2sdk directory to the Eclipse directory, you can start Eclipse. 3. Re-change the "F: / NOJ2SDK" directory name to "F: / J2SDK", you can start Eclipse. The above three methods can be performed separately, if executed, if the Eclipse is executed by default, Eclipse first executes the -VM parameter; if there is no -VM parameter, look for the Eclipse / JRE subdirectory; if not found, Eclipse will find Java registered in the system. Operational environment.
