Issue with Mouse Event

[Yogi09]

Sometimes it is giving below exception , how to solve this

org.simplenativehooks.AbstractNativeHookEventProcessor processStdout
WARNING: Exception when processing stdout for Windows Hook. null
java.lang.NullPointerException
at java.util.LinkedList$ListItr.next(LinkedList.java:893)
at org.simplenativehooks.NativeHookGlobalEventPublisher.publishMouseEvent(NativeHookGlobalEventPublisher.java:56)
at org.simplenativehooks.windows.GlobalWindowsEventOchestrator.processStdout(GlobalWindowsEventOchestrator.java:81)
at org.simplenativehooks.AbstractNativeHookEventProcessor.processStdout(AbstractNativeHookEventProcessor.java:142)
at org.simplenativehooks.AbstractNativeHookEventProcessor.access$000(AbstractNativeHookEventProcessor.java:13)
at org.simplenativehooks.AbstractNativeHookEventProcessor$1.run(AbstractNativeHookEventProcessor.java:70)

[hptruong93]

Do you have steps to reproduce this?
Could you post your code here?

[Yogi09]

It produce some time not always, here is my code for starting and closing hook, code is same which is given in lib. using on windows 10.

public void closeHook() {
try {
NativeHookInitializer.of().stop();

    } catch (Exception ex) {
        System.out.println("Home Design " + ex);
    }
}

public void keyboardPressed() {

    /* Extracting resources */
    try {
        BootStrapResources.extractResources();
    } catch (IOException e) {
        System.out.println("Cannot extract bootstrap resources.");
        e.printStackTrace();
        System.exit(2);
    }
    /* Initializing global hooks */
    NativeHookInitializer.of().start();

    /* Set up callbacks */
    NativeKeyHook key = NativeKeyHook.of();
    key.setKeyPressed(new Function<org.simplenativehooks.events.NativeKeyEvent, Boolean>() {
        @Override
        public Boolean apply(org.simplenativehooks.events.NativeKeyEvent d) {
            str_key_pressed = "Key Released: java "+d.getKey();
            arr_keyboard_pressed.add(str_key_pressed);
            mm = 1;
            return true;
        }
    });
    key.setKeyReleased(new Function<org.simplenativehooks.events.NativeKeyEvent, Boolean>() {
        @Override
        public Boolean apply(org.simplenativehooks.events.NativeKeyEvent d) {
            System.out.println("Key released: " + d.getKey());
            mm=1;
         
            return true;
        }
    });
    key.startListening();

    NativeMouseHook mouse = NativeMouseHook.of();
    mouse.setMousePressed(new Function<org.simplenativehooks.events.NativeMouseEvent, Boolean>() {
        @Override
        public Boolean apply(org.simplenativehooks.events.NativeMouseEvent d) {
            arr_mouse_moved.add(d.toString());
            mm = 1;
            return true;
        }
    });
    mouse.setMouseReleased(new Function<org.simplenativehooks.events.NativeMouseEvent, Boolean>() {
        @Override
        public Boolean apply(org.simplenativehooks.events.NativeMouseEvent d) {
            arr_mouse_moved.add(d.toString());
            mm = 1;
            return true;
        }
    });

    mouse.startListening();

}