Cygwin Java Error "Unable to find or cannot load main class" Troubleshooting

Win7 installed under the Java, the command line can run normally, Cygwin error: The main class could not be found or could not be loaded.

After the investigation was found to be Cygwin ~/.bash_profile in the $classpath configuration:

Java_home= "/cygdrive/d/program files/java/jdk1.8.0_66"
Classpath= ".: $JAVA _home/lib: $JAVA _home/lib/dt.jar: $JAVA _home/lib/tools.jar"
Path= "$JAVA _home/bin: $PATH"

Because the Windows version of Java.exe is installed, the executable file resolves the classpath environment variable, only the semicolon is recognized, and the colon is not recognized.

Change the component number to run normally.

Cygwin Java Error "Unable to find or cannot load main class" Troubleshooting