Description of problem:

Sun (Oracle) java RE installs itself to /usr/java/latest/bin/java, and adds this to alternatives file (/var/lib/alternatives/java).
system-switch-java deals incorrectly with this path what results in program crash (list index out of range)

Version-Release number of selected component (if applicable):
system-switch-java-1.1.5-2.fc14.noarch

How reproducible:
always

Steps to Reproduce:
1. Install Sun Java RE from an RPM for Fedora (http://www.java.com/en/download/linux_manual.jsp?locale=en&host=www.java.com), use the RPM provided.
2. execute system-switch-java
3.
  
Actual results:
program crash

Expected results:
Treat Sun Java Re correctly, or at least ignore it and do not crash.

Additional info:
Problem lies in get_java_identifiers() and how it tries to determine a name of java package from path:

alternatives, best = get_alternatives('java')
java_expression = re.compile('/usr/lib/jvm/jre-([^/]*)/bin/java')
    for alternative in alternatives:
        java_search = java_expression.search(alternative)
        if java_search == None:
            # Skip unrecognized java alternative.
            continue
        java = java_search.group(1)
        java_identifiers.append(java)


This leads to keeping best variable pointing to Sun Java, but the regular expression fail and a corresponding entry is not appended java_identifiers.
Length of java_identifiers < best

There is a FIXME statement in the code just below, and waiting to be fixed.