demjava -code -outputdir ./gen program
Parsing program.cd...
Building hashtable of classes...
Expanding parameterized classes...
Converting repetition classes...
Filling in part names...
Setting inheritance links...
Parsing program.beh...
Gathering methods...
Expanding traversals...
  Expanding toClassName...
  Expanding toAllSubclasses...
Generating Java code to ./gen...
Done.
CLASSPATH=./gen:$CLASSPATH javac -d ./gen gen/Main.java
CLASSPATH=./gen:$CLASSPATH java Main < program.input
 alternation edge 
 source of edge B
 target of edge C
 alternation edge 
 source of edge B
 target of edge D
 construction edges = 0
FAILURE