java.lang.NullPointerException

Coderanch | Matt Kohanek | 8 years ago
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Root Cause Analysis

  1. java.lang.NullPointerException

    No message provided

    at java.io.Reader.<init>()
  2. Java RT
    InputStreamReader.<init>
    1. java.io.Reader.<init>(Reader.java:61)
    2. java.io.InputStreamReader.<init>(InputStreamReader.java:80)
    2 frames
  3. Simple XML
    Persister.read
    1. org.simpleframework.xml.core.Persister.read(Persister.java:471)
    2. org.simpleframework.xml.core.Persister.read(Persister.java:452)
    2 frames
  4. deviceContainer
    DeviceCollectionXMLAO.readXML
    1. deviceContainer.DeviceCollectionXMLAO.readXML(DeviceCollectionXMLAO.java:15)
    1 frame
  5. testContainer
    Temp.main
    1. testContainer.Temp.updateNode(Temp.java:44)
    2. testContainer.Temp.main(Temp.java:25)
    2 frames