java.lang.AbstractMethodError

Stack Overflow | doctore | 3 months ago
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    How to test a generic class?

    Google Groups | 9 months ago | Vincent Privat
    java.lang.AssertionError: Abstract delegation: AbstractSet's equals method delegates to an abstract method: null For more information, go to: http://www.jqno.nl/equalsverifier/errormessages

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    Root Cause Analysis

    1. java.lang.AbstractMethodError

      No message provided

      at org.codehaus.jackson.map.AnnotationIntrospector$Pair.findSerializer()
    2. Data Mapper for Jackson
      ObjectMapper.writeValue
      1. org.codehaus.jackson.map.AnnotationIntrospector$Pair.findSerializer(AnnotationIntrospector.java:1148)
      2. org.codehaus.jackson.map.ser.BasicSerializerFactory.findSerializerFromAnnotation(BasicSerializerFactory.java:362)
      3. org.codehaus.jackson.map.ser.BeanSerializerFactory.createSerializer(BeanSerializerFactory.java:252)
      4. org.codehaus.jackson.map.ser.StdSerializerProvider._createUntypedSerializer(StdSerializerProvider.java:782)
      5. org.codehaus.jackson.map.ser.StdSerializerProvider._createAndCacheUntypedSerializer(StdSerializerProvider.java:735)
      6. org.codehaus.jackson.map.ser.StdSerializerProvider.findValueSerializer(StdSerializerProvider.java:344)
      7. org.codehaus.jackson.map.ser.StdSerializerProvider.findTypedValueSerializer(StdSerializerProvider.java:420)
      8. org.codehaus.jackson.map.ser.StdSerializerProvider._serializeValue(StdSerializerProvider.java:601)
      9. org.codehaus.jackson.map.ser.StdSerializerProvider.serializeValue(StdSerializerProvider.java:256)
      10. org.codehaus.jackson.map.ObjectMapper.writeValue(ObjectMapper.java:1606)
      10 frames
    3. JAX-RS provider for JSON content type
      JacksonJsonProvider.writeTo
      1. org.codehaus.jackson.jaxrs.JacksonJsonProvider.writeTo(JacksonJsonProvider.java:520)
      1 frame
    4. jersey-json
      JacksonProviderProxy.writeTo
      1. com.sun.jersey.json.impl.provider.entity.JacksonProviderProxy.writeTo(JacksonProviderProxy.java:160)
      1 frame
    5. Jersey
      WebApplicationImpl.handleRequest
      1. com.sun.jersey.spi.container.ContainerResponse.write(ContainerResponse.java:306)
      2. com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1437)
      3. com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349)
      4. com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339)
      4 frames
    6. Jersey
      ServletContainer.service
      1. com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
      2. com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
      3. com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:699)
      3 frames
    7. JavaServlet
      HttpServlet.service
      1. javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
      1 frame
    8. Glassfish Core
      ApplicationFilterChain.internalDoFilter
      1. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
      1 frame