#vulnerable code 
                                public static String load(Class cls, Properties properties, boolean pathsFirst) {
        if (!isLoadLibraries() || cls == null) {
            return null;
        }

        // Find the top enclosing class, to match the library filename
        cls = getEnclosingClass(cls);
        ClassProperties p = loadProperties(cls, properties, true);

        // Force initialization of all the target classes in case they need it
        List<String> targets = p.get("target");
        if (targets.isEmpty()) {
            if (p.getInheritedClasses() != null) {
                for (Class c : p.getInheritedClasses()) {
                    targets.add(c.getName());
                }
            }
            targets.add(cls.getName());
        }
        for (String s : targets) {
            try {
                if (logger.isDebugEnabled()) {
                    logger.debug("Loading class " + s);
                }
                Class.forName(s, true, cls.getClassLoader());
            } catch (ClassNotFoundException ex) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Failed to load class " + s + ": " + ex);
                }
                Error e = new NoClassDefFoundError(ex.toString());
                e.initCause(ex);
                throw e;
            }
        }

        String cacheDir = null;
        try {
            cacheDir = getCacheDir().getCanonicalPath();
        } catch (IOException e) {
            // no cache dir, no worries
        }

        // Preload native libraries desired by our class
        List<String> preloads = new ArrayList<String>();
        preloads.addAll(p.get("platform.preload"));
        preloads.addAll(p.get("platform.link"));
        UnsatisfiedLinkError preloadError = null;
        for (String preload : preloads) {
            try {
                URL[] urls = findLibrary(cls, p, preload, pathsFirst);
                String filename = loadLibrary(urls, preload);
                if (cacheDir != null && filename.startsWith(cacheDir)) {
                    createLibraryLink(filename, p, preload);
                }
            } catch (UnsatisfiedLinkError e) {
                preloadError = e;
            }
        }

        try {
            String library = p.getProperty("platform.library");
            URL[] urls = findLibrary(cls, p, library, pathsFirst);
            String filename = loadLibrary(urls, library);
            if (cacheDir != null && filename.startsWith(cacheDir)) {
                createLibraryLink(filename, p, library);
            }
            return filename;
        } catch (UnsatisfiedLinkError e) {
            if (preloadError != null && e.getCause() == null) {
                e.initCause(preloadError);
            }
            throw e;
        }
    } 
                            #location 52 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                public static String load(Class cls, Properties properties, boolean pathsFirst) {
        if (!isLoadLibraries() || cls == null) {
            return null;
        }

        // Find the top enclosing class, to match the library filename
        cls = getEnclosingClass(cls);
        ClassProperties p = loadProperties(cls, properties, true);

        // Force initialization of all the target classes in case they need it
        List<String> targets = p.get("target");
        if (targets.isEmpty()) {
            if (p.getInheritedClasses() != null) {
                for (Class c : p.getInheritedClasses()) {
                    targets.add(c.getName());
                }
            }
            targets.add(cls.getName());
        }
        for (String s : targets) {
            try {
                if (logger.isDebugEnabled()) {
                    logger.debug("Loading class " + s);
                }
                Class.forName(s, true, cls.getClassLoader());
            } catch (ClassNotFoundException ex) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Failed to load class " + s + ": " + ex);
                }
                Error e = new NoClassDefFoundError(ex.toString());
                e.initCause(ex);
                throw e;
            }
        }

        String cacheDir = null;
        try {
            cacheDir = getCacheDir().getCanonicalPath();
        } catch (IOException e) {
            // no cache dir, no worries
        }

        // Preload native libraries desired by our class
        List<String> preloads = new ArrayList<String>();
        preloads.addAll(p.get("platform.preload"));
        preloads.addAll(p.get("platform.link"));
        UnsatisfiedLinkError preloadError = null;
        for (String preload : preloads) {
            try {
                URL[] urls = findLibrary(cls, p, preload, pathsFirst);
                String filename = loadLibrary(urls, preload);
                if (cacheDir != null && filename != null && filename.startsWith(cacheDir)) {
                    createLibraryLink(filename, p, preload);
                }
            } catch (UnsatisfiedLinkError e) {
                preloadError = e;
            }
        }

        try {
            String library = p.getProperty("platform.library");
            URL[] urls = findLibrary(cls, p, library, pathsFirst);
            String filename = loadLibrary(urls, library);
            if (cacheDir != null && filename != null && filename.startsWith(cacheDir)) {
                createLibraryLink(filename, p, library);
            }
            return filename;
        } catch (UnsatisfiedLinkError e) {
            if (preloadError != null && e.getCause() == null) {
                e.initCause(preloadError);
            }
            throw e;
        }
    }