Thanks to all for the clarification regarding classpath
(JDE->Options->project).
Note for the FAQ (I think anyhow):
If $CLASSPATH = .:/opt/java/lib:/opt/java/bin
The equivalent command line option is _not_
javac -classpath .:/opt/java/lib:/opt/java/bin
/jdg/ch05/FooClassSrc.java
Is _no good_
ie: javac -classpath $CLASSPATH fails to find java.lang.*
A perusal of the Sun docs at
http://java.sun.com/products/jdk/1.2/docs/tooldocs/solaris/javac.html
shows that one needs to include the .zip suffix (and presumably the
.jar suffix as well) as in:
javac -classpath /opt/java/lib/classes.zip:/opt/java/bin:.
./jdg/ch05/FooClassSrc.java