private double classifyInstance (Instance example) throws Exception {
boolean passedAllTests = true;
for (Enumeration e = m_RuleList.elements();
passedAllTests && e.hasMoreElements(); ) {
Test test = (Test) e.nextElement();
passedAllTests = test.passesTest(example);
}
if (passedAllTests) return m_ClassValue;
else return -1.0;
}