jackson fails to jnativehook class with following exception ========================================= The class of event object is : org.jnativehook.keyboard.NativeKeyEvent com.fasterxml.jackson.databind.JsonMappingException: No serializer found for class org.jnativehook.GlobalScreen and no properties discovered to create BeanSerializer (to avoi…

GlobalKeyListenerExample.java

import org.jnativehook.GlobalScreen;
import org.jnativehook.NativeHookException;
import org.jnativehook.keyboard.NativeKeyEvent;
import org.jnativehook.keyboard.NativeKeyListener;

import com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.ObjectWriter;
import com.fasterxml.jackson.databind.introspect.VisibilityChecker;

   abstract class JacksonMixIn {
      JacksonMixIn(
                   @JsonProperty("rawCode") int rawCode
                   )
         { /* do nothing */ }
   }

public class GlobalKeyListenerExample implements NativeKeyListener {
  public void nativeKeyPressed(NativeKeyEvent e) {
		System.out.println("Key Pressed: " + NativeKeyEvent.getKeyText(e.getKeyCode()));

		if (e.getKeyCode() == NativeKeyEvent.VK_ESCAPE) {
			GlobalScreen.unregisterNativeHook();
		}
		/*
		 * try { Thread.sleep(5000); } catch(InterruptedException ex) {
		 * Thread.currentThread().interrupt(); }
		 */
	}

	public void nativeKeyReleased(NativeKeyEvent e) {
		System.out.println("Key Released: " + NativeKeyEvent.getKeyText(e.getKeyCode()));
		System.out.println("The class of event object is : " + e.getClass().getName());
		ObjectMapper mapper = new ObjectMapper();

		//mapper.setVisibilityChecker(VisibilityChecker.Std.defaultInstance().withFieldVisibility(Visibility.ANY));
		mapper.addMixInAnnotations(NativeKeyEvent.class, JacksonMixIn.class);

		//ObjectWriter ow = new ObjectMapper().writer(); // .withDefaultPrettyPrinter();
		ObjectWriter ow = mapper.writer(); // .withDefaultPrettyPrinter();
		try {
			String json = ow.writeValueAsString(e);
			System.out.println("Here is jsonized event : " + json);
		} catch (JsonProcessingException e1) {
			e1.printStackTrace();
		}
	}

	public void nativeKeyTyped(NativeKeyEvent e) {
		 System.out.println("Key Typed: " + NativeKeyEvent.getKeyText(e.getKeyCode()));

	}

	public static void main(String[] args) {
		try {
			GlobalScreen.registerNativeHook();
		} catch (NativeHookException ex) {
			System.err.println("There was a problem registering the native hook.");
			System.err.println(ex.getMessage());

			System.exit(1);
		}

		// Construct the example object and initialze native hook.
		GlobalScreen.getInstance().addNativeKeyListener(new GlobalKeyListenerExample());
		System.out.println("Do I ever come here?");
	}
}

links for jar files used in sample

jnativehook 
 - https://jnativehook.googlecode.com/files/JNativeHook-1.1.4.zip
jackson jar files
 - http://repo1.maven.org/maven2/com/fasterxml/jackson/core/jackson-annotations/2.2.3/jackson-annotations-2.2.3.jar
 - http://repo1.maven.org/maven2/com/fasterxml/jackson/core/jackson-core/2.2.3/jackson-core-2.2.3.jar
 - http://repo1.maven.org/maven2/com/fasterxml/jackson/core/jackson-databind/2.2.3/jackson-databind-2.2.3.jar