Set result = new TreeSet();
for (int i = 0; i < s1.length; i++)
result.add(s1[i]);
for (int i = 0; i < s2.length; i++)
result.remove(s2[i]);
return (String[]) result.toArray(stringArray0);
}
private boolean setEqual(String[] s1, String[] s2) {
if (null == s1 && null == s2)
return true;