public void tests() throws Exception {
if (getClassAdapter(null) != null) {
String file = System.getProperty("java.home") + "/lib/rt.jar";
ZipFile zip = new ZipFile(file);
Enumeration entries = zip.entries();
while (entries.hasMoreElements()) {
ZipEntry e = (ZipEntry) entries.nextElement();
String n = e.getName();
if (n.endsWith(".class")) {
n = n.substring(0, n.length() - 6).replace('/', '.');