question: private String processClasspathDefaults ( String javaArgs ) { if ( javaArgs . indexOf ( "-classpath " ) == - 1 ) { StringBuffer munged = new StringBuffer ( javaArgs ) ; SearchPath classpath = classManager . getClassPath ( ) ; if ( classpath . isEmpty ( ) ) { String envcp = System . getProperty ( "env.class.path" ) ; if ( ( envcp != null ) && ( envcp . length ( ) > 0 ) ) { munged . append ( " -classpath " + envcp ) ; } } else { munged . append ( " -classpath " + classpath . asString ( ) ) ; } return munged . toString ( ) ; } else { return javaArgs ; } }
target:  Add a -classpath argument to the arguments passed to the exec'ed VM with the contents of CLASSPATH environment variable, if -classpath was not already specified.