If the starting CLASSPATH variable begins with a directory separator, the ClassPath
constructor generates an exception.

The following code change from delta 1.20 fixes the problem:

sccs diffs -r1.20 ClassPath.java
 
------- ClassPath.java -------
2c2
< * %W% %E% David Connelly
---
> * @(#)ClassPath.java 1.21 95/11/30 David Connelly
54,55c54,60
< for (i = n = 0; i != -1; i = pathstr.indexOf(dirSeparator, i + 1)) {
< n++;
---
> i = 0;
> n = 1;
> for (;;) {
> if ((i = pathstr.indexOf(dirSeparator, i)) == -1)
> break;
> n++;
> i++;

Essentially, the problem here is that the counting starts at position 1 of the string when
position zero should be exmained.