If you get AbstractMethodError when creating a JMS Session, then this might help (very rough code though)

gistfile1.txt

        // Call this, or put in a method and call, where exception is being thrown
        URL[] urls = ((URLClassLoader) (Thread.currentThread().getContextClassLoader())).getURLs();
				StringBuilder sz = new StringBuilder("Classpath jars [");
				sz.append(Integer.toString(urls.length));
				sz.append("]...\n");
				String searchFor = "jms/Session";
				Map<File, String> matches = new HashMap<>();
				for (URL url : urls) {
					File file = new File(url.getFile());
					sz.append("    ").append(file.getAbsolutePath());
					try {
						if (!file.isDirectory()) {
							JarFile jar = new JarFile(file);
							Enumeration<JarEntry> entries = jar.entries();
							while (entries.hasMoreElements()) {
								JarEntry entry = entries.nextElement();
								String name = entry.getName();
								if (name.contains(searchFor)) {
									matches.put(file, name);
								}
							}
							jar.close();
						}						
					} catch (IOException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
					sz.append("\n");
				}
				sz.append("\n");
				sz.append("Found following matches for ").append(searchFor).append("...\n");
				matches.forEach((k,v) -> {
					sz.append("  ").append(k.getName()).append(" contains ").append(v).append("\n");
				});
				sz.append("\n");
				log.info(sz.toString());