org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'watchService': Invocation of init method failed; nested exception is java.lang.NullPointerException

Stack Overflow | Alex Woolford | 4 months ago
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    Stack Overflow | 4 months ago | Alex Woolford
    org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'watchService': Invocation of init method failed; nested exception is java.lang.NullPointerException
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    Root Cause Analysis

    1. java.lang.NullPointerException

      null

      at io.woolford.WatchService.monitor()
    2. io.woolford
      WatchService.watchPath
      1. io.woolford.WatchService.monitor(WatchService.java:93)[classes/:na]
      2. io.woolford.WatchService.watchPath(WatchService.java:37)[classes/:na]
      2 frames
    3. Java RT
      Method.invoke
      1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[na:1.8.0_91]
      2. sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)[na:1.8.0_91]
      3. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[na:1.8.0_91]
      4. java.lang.reflect.Method.invoke(Method.java:498)[na:1.8.0_91]
      4 frames
    4. Spring Beans
      DefaultListableBeanFactory.preInstantiateSingletons
      1. org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:365)[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
      2. org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:310)[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
      3. org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:133)[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
      4. org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:408)[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
      5. org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1570)[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
      6. org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545)[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
      7. org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
      8. org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
      9. org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
      10. org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
      11. org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
      12. org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:776)[spring-beans-4.3.2.RELEASE.jar:4.3.2.RELEASE]
      12 frames
    5. Spring Context
      AbstractApplicationContext.refresh
      1. org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:861)[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
      2. org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541)[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
      2 frames
    6. Spring Boot
      SpringApplication.run
      1. org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759)[spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]
      2. org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:369)[spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]
      3. org.springframework.boot.SpringApplication.run(SpringApplication.java:313)[spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]
      4. org.springframework.boot.SpringApplication.run(SpringApplication.java:1185)[spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]
      5. org.springframework.boot.SpringApplication.run(SpringApplication.java:1174)[spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]
      5 frames
    7. io.woolford
      Application.main
      1. io.woolford.Application.main(Application.java:11)[classes/:na]
      1 frame