#vulnerable code 
                                @Override
    @SuppressFBWarnings(value = "SWL_SLEEP_WITH_LOCK_HELD", justification = "This is fine")
    public synchronized void launch(SlaveComputer computer, TaskListener listener) {
        if (!(computer instanceof KubernetesComputer)) {
            throw new IllegalArgumentException("This Launcher can be used only with KubernetesComputer");
        }
        KubernetesComputer kubernetesComputer = (KubernetesComputer) computer;
        computer.setAcceptingTasks(false);
        KubernetesSlave slave = kubernetesComputer.getNode();
        if (slave == null) {
            throw new IllegalStateException("Node has been removed, cannot launch " + computer.getName());
        }
        if (launched) {
            LOGGER.log(INFO, "Agent has already been launched, activating: {0}", slave.getNodeName());
            computer.setAcceptingTasks(true);
            return;
        }

        final PodTemplate template = slave.getTemplate();
        try {
            KubernetesClient client = slave.getKubernetesCloud().connect();
            Pod pod = template.build(slave);
            slave.assignPod(pod);

            String podName = pod.getMetadata().getName();

            String namespace = Arrays.asList( //
                    pod.getMetadata().getNamespace(),
                    template.getNamespace(), client.getNamespace()) //
                    .stream().filter(s -> StringUtils.isNotBlank(s)).findFirst().orElse(null);
            slave.setNamespace(namespace);

            LOGGER.log(Level.FINE, "Creating Pod: {0}/{1}", new Object[] { namespace, podName });
            pod = client.pods().inNamespace(namespace).create(pod);
            LOGGER.log(INFO, "Created Pod: {0}/{1}", new Object[] { namespace, podName });
            listener.getLogger().printf("Created Pod: %s/%s%n", namespace, podName);

            TaskListener runListener = template.getListener();
            runListener.getLogger().printf("Created Pod: %s/%s%n", namespace, podName);

            template.getWorkspaceVolume().createVolume(client, pod.getMetadata());
            watcher = new AllContainersRunningPodWatcher(client, pod, runListener);
            try (Watch w1 = client.pods().inNamespace(namespace).withName(podName).watch(watcher);
                 Watch w2 = eventWatch(client, podName, namespace, runListener)) {
                assert watcher != null; // assigned 3 lines above
                watcher.await(template.getSlaveConnectTimeout(), TimeUnit.SECONDS);
            } catch (InvalidPodTemplateException e) {
                LOGGER.info("Caught invalid pod template exception");
                switch (e.getReason()) {
                    case "ImagePullBackOff":
                        runListener.getLogger().printf(e.getMessage());
                        PodUtils.cancelInvalidPodTemplateJob(pod, "ImagePullBackOff");
                        break;
                    default:
                        LOGGER.warning("Unknown reason for InvalidPodTemplateException : " + e.getReason());
                        break;
                }
            }
            LOGGER.log(INFO, "Pod is running: {0}/{1}", new Object[] { namespace, podName });

            // We need the pod to be running and connected before returning
            // otherwise this method keeps being called multiple times
            List<String> validStates = ImmutableList.of("Running");

            int waitForSlaveToConnect = template.getSlaveConnectTimeout();
            int waitedForSlave;

            // now wait for agent to be online
            SlaveComputer slaveComputer = null;
            String status = null;
            List<ContainerStatus> containerStatuses = null;
            long lastReportTimestamp = System.currentTimeMillis();
            for (waitedForSlave = 0; waitedForSlave < waitForSlaveToConnect; waitedForSlave++) {
                slaveComputer = slave.getComputer();
                if (slaveComputer == null) {
                    throw new IllegalStateException("Node was deleted, computer is null");
                }
                if (slaveComputer.isOnline()) {
                    break;
                }

                // Check that the pod hasn't failed already
                pod = client.pods().inNamespace(namespace).withName(podName).get();
                if (pod == null) {
                    throw new IllegalStateException("Pod no longer exists: " + podName);
                }
                status = pod.getStatus().getPhase();
                if (!validStates.contains(status)) {
                    break;
                }

                containerStatuses = pod.getStatus().getContainerStatuses();
                List<ContainerStatus> terminatedContainers = new ArrayList<>();
                for (ContainerStatus info : containerStatuses) {
                    if (info != null) {
                        if (info.getState().getTerminated() != null) {
                            // Container has errored
                            LOGGER.log(INFO, "Container is terminated {0} [{2}]: {1}",
                                    new Object[] { podName, info.getState().getTerminated(), info.getName() });
                            listener.getLogger().printf("Container is terminated %1$s [%3$s]: %2$s%n", podName,
                                    info.getState().getTerminated(), info.getName());
                            terminatedContainers.add(info);
                        }
                    }
                }

                checkTerminatedContainers(terminatedContainers, podName, namespace, slave, client);

                if (lastReportTimestamp + REPORT_INTERVAL < System.currentTimeMillis()) {
                    LOGGER.log(INFO, "Waiting for agent to connect ({1}/{2}): {0}",
                            new Object[]{podName, waitedForSlave, waitForSlaveToConnect});
                    listener.getLogger().printf("Waiting for agent to connect (%2$s/%3$s): %1$s%n", podName, waitedForSlave,
                            waitForSlaveToConnect);
                    lastReportTimestamp = System.currentTimeMillis();
                }
                Thread.sleep(1000);
            }
            if (slaveComputer == null || slaveComputer.isOffline()) {
                logLastLines(containerStatuses, podName, namespace, slave, null, client);
                throw new IllegalStateException(
                        "Agent is not connected after " + waitedForSlave + " seconds, status: " + status);
            }

            computer.setAcceptingTasks(true);
            launched = true;
            try {
                // We need to persist the "launched" setting...
                slave.save();
            } catch (IOException e) {
                LOGGER.log(Level.WARNING, "Could not save() agent: " + e.getMessage(), e);
            }
        } catch (Throwable ex) {
            setProblem(ex);
            LOGGER.log(Level.WARNING, String.format("Error in provisioning; agent=%s, template=%s", slave, template), ex);
            LOGGER.log(Level.FINER, "Removing Jenkins node: {0}", slave.getNodeName());
            try {
                slave.terminate();
            } catch (IOException | InterruptedException e) {
                LOGGER.log(Level.WARNING, "Unable to remove Jenkins node", e);
            }
            throw Throwables.propagate(ex);
        }
    } 
                            #location 51 
                            #vulnerability type CHECKERS_PRINTF_ARGS
#fixed code
                                @Override
    @SuppressFBWarnings(value = "SWL_SLEEP_WITH_LOCK_HELD", justification = "This is fine")
    public synchronized void launch(SlaveComputer computer, TaskListener listener) {
        if (!(computer instanceof KubernetesComputer)) {
            throw new IllegalArgumentException("This Launcher can be used only with KubernetesComputer");
        }
        KubernetesComputer kubernetesComputer = (KubernetesComputer) computer;
        computer.setAcceptingTasks(false);
        KubernetesSlave slave = kubernetesComputer.getNode();
        if (slave == null) {
            throw new IllegalStateException("Node has been removed, cannot launch " + computer.getName());
        }
        if (launched) {
            LOGGER.log(INFO, "Agent has already been launched, activating: {0}", slave.getNodeName());
            computer.setAcceptingTasks(true);
            return;
        }

        final PodTemplate template = slave.getTemplate();
        try {
            KubernetesClient client = slave.getKubernetesCloud().connect();
            Pod pod = template.build(slave);
            slave.assignPod(pod);

            String podName = pod.getMetadata().getName();

            String namespace = Arrays.asList( //
                    pod.getMetadata().getNamespace(),
                    template.getNamespace(), client.getNamespace()) //
                    .stream().filter(s -> StringUtils.isNotBlank(s)).findFirst().orElse(null);
            slave.setNamespace(namespace);

            LOGGER.log(Level.FINE, "Creating Pod: {0}/{1}", new Object[] { namespace, podName });
            pod = client.pods().inNamespace(namespace).create(pod);
            LOGGER.log(INFO, "Created Pod: {0}/{1}", new Object[] { namespace, podName });
            listener.getLogger().printf("Created Pod: %s/%s%n", namespace, podName);

            TaskListener runListener = template.getListener();
            runListener.getLogger().printf("Created Pod: %s/%s%n", namespace, podName);

            template.getWorkspaceVolume().createVolume(client, pod.getMetadata());
            watcher = new AllContainersRunningPodWatcher(client, pod, runListener);
            try (Watch w1 = client.pods().inNamespace(namespace).withName(podName).watch(watcher);
                 Watch w2 = eventWatch(client, podName, namespace, runListener)) {
                assert watcher != null; // assigned 3 lines above
                watcher.await(template.getSlaveConnectTimeout(), TimeUnit.SECONDS);
            }
            LOGGER.log(INFO, "Pod is running: {0}/{1}", new Object[] { namespace, podName });

            // We need the pod to be running and connected before returning
            // otherwise this method keeps being called multiple times
            List<String> validStates = ImmutableList.of("Running");

            int waitForSlaveToConnect = template.getSlaveConnectTimeout();
            int waitedForSlave;

            // now wait for agent to be online
            SlaveComputer slaveComputer = null;
            String status = null;
            List<ContainerStatus> containerStatuses = null;
            long lastReportTimestamp = System.currentTimeMillis();
            for (waitedForSlave = 0; waitedForSlave < waitForSlaveToConnect; waitedForSlave++) {
                slaveComputer = slave.getComputer();
                if (slaveComputer == null) {
                    throw new IllegalStateException("Node was deleted, computer is null");
                }
                if (slaveComputer.isOnline()) {
                    break;
                }

                // Check that the pod hasn't failed already
                pod = client.pods().inNamespace(namespace).withName(podName).get();
                if (pod == null) {
                    throw new IllegalStateException("Pod no longer exists: " + podName);
                }
                status = pod.getStatus().getPhase();
                if (!validStates.contains(status)) {
                    break;
                }

                containerStatuses = pod.getStatus().getContainerStatuses();
                List<ContainerStatus> terminatedContainers = new ArrayList<>();
                for (ContainerStatus info : containerStatuses) {
                    if (info != null) {
                        if (info.getState().getTerminated() != null) {
                            // Container has errored
                            LOGGER.log(INFO, "Container is terminated {0} [{2}]: {1}",
                                    new Object[] { podName, info.getState().getTerminated(), info.getName() });
                            listener.getLogger().printf("Container is terminated %1$s [%3$s]: %2$s%n", podName,
                                    info.getState().getTerminated(), info.getName());
                            terminatedContainers.add(info);
                        }
                    }
                }

                checkTerminatedContainers(terminatedContainers, podName, namespace, slave, client);

                if (lastReportTimestamp + REPORT_INTERVAL < System.currentTimeMillis()) {
                    LOGGER.log(INFO, "Waiting for agent to connect ({1}/{2}): {0}",
                            new Object[]{podName, waitedForSlave, waitForSlaveToConnect});
                    listener.getLogger().printf("Waiting for agent to connect (%2$s/%3$s): %1$s%n", podName, waitedForSlave,
                            waitForSlaveToConnect);
                    lastReportTimestamp = System.currentTimeMillis();
                }
                Thread.sleep(1000);
            }
            if (slaveComputer == null || slaveComputer.isOffline()) {
                logLastLines(containerStatuses, podName, namespace, slave, null, client);
                throw new IllegalStateException(
                        "Agent is not connected after " + waitedForSlave + " seconds, status: " + status);
            }

            computer.setAcceptingTasks(true);
            launched = true;
            try {
                // We need to persist the "launched" setting...
                slave.save();
            } catch (IOException e) {
                LOGGER.log(Level.WARNING, "Could not save() agent: " + e.getMessage(), e);
            }
        } catch (Throwable ex) {
            setProblem(ex);
            LOGGER.log(Level.WARNING, String.format("Error in provisioning; agent=%s, template=%s", slave, template), ex);
            LOGGER.log(Level.FINER, "Removing Jenkins node: {0}", slave.getNodeName());
            try {
                slave.terminate();
            } catch (IOException | InterruptedException e) {
                LOGGER.log(Level.WARNING, "Unable to remove Jenkins node", e);
            }
            throw Throwables.propagate(ex);
        }
    }