EDIT

import java.io.FilenameFilter;

import java.util.jar.Attributes;

import java.util.jar.JarFile;

import java.util.jar.Manifest;

    private String cdmlibServicesVersion = "";

    private String cdmlibServicesLastModified = "";

                // get the 'Bundle-Version' and 'Bnd-LastModified' properties of the

                // manifest file in the cdmlib services jar

                if(warFile != null && warFile.isDirectory()) {

                    // generate the webapp lib dir path

                    String warLibDirAbsolutePath = warFile.getAbsolutePath() +

                            File.separator +

                            "WEB-INF" +

                            File.separator +

                            "lib";

                    File warLibDir = new File(warLibDirAbsolutePath);

                    if(warLibDir.exists()) {

                        // get the cdmlib-services jar

                        File [] files = warLibDir.listFiles(new FilenameFilter() {

                            @Override

                            public boolean accept(File dir, String name) {

                                return name.startsWith("cdmlib-services") && name.endsWith(".jar");

                            }

                        });

                        if(files != null && files.length > 0) {

                            // get the relevant info from the jar manifest

                            JarFile jarFile = new JarFile(files[0]);

                            Manifest manifest = jarFile.getManifest();

                            Attributes attributes = manifest.getMainAttributes();

                            // from the OSGI spec the LastModified value is " the number of milliseconds

                            // since midnight Jan. 1, 1970 UTC with the condition that a change must

                            // always result in a higher value than the previous last modified time

                            // of any bundle"

                            cdmlibServicesVersion = attributes.getValue("Bundle-Version");

                            logger.warn("cdmlib-services version : " + cdmlibServicesVersion);

                            cdmlibServicesLastModified = attributes.getValue("Bnd-LastModified");

                            logger.warn("cdmlib-services last modified timestamp : " + cdmlibServicesLastModified);

                            if(cdmlibServicesVersion == null || cdmlibServicesLastModified == null) {

                                throw new IllegalStateException("Invalid cdmlib-services manifest file");

                            }

                        } else {

                            throw new IllegalStateException("cdmlib-services jar not found ");

                        }

                    }

                }

    public String getCdmlibServicesVersion() {

        return cdmlibServicesVersion;

    }

    public String getCdmlibServicesLastModified() {

        return cdmlibServicesLastModified;

    }