java.lang.NullPointerException

Stack Overflow | Piara Sandhu | 9 months ago
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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at Pangrams.addToMap()
    2. Unknown
      PangramTest.testLowercasePangram
      1. Pangrams.addToMap(Pangrams.java:47)
      2. Pangrams.isPangram(Pangrams.java:24)
      3. PangramTest.testLowercasePangram(PangramTest.java:15)
      3 frames
    3. Java RT
      Method.invoke
      1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      2. sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      3. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      4. java.lang.reflect.Method.invoke(Method.java:483)
      4 frames
    4. JUnit
      JUnitCore.run
      1. org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
      2. org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
      3. org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
      4. org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
      5. org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
      6. org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
      7. org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
      8. org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
      9. org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
      10. org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
      11. org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
      12. org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
      13. org.junit.runners.ParentRunner.run(ParentRunner.java:300)
      14. org.junit.runner.JUnitCore.run(JUnitCore.java:157)
      14 frames
    5. IntelliJ junit4 module
      JUnit4IdeaTestRunner.startRunnerWithArgs
      1. com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:117)
      2. com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:42)
      2 frames
    6. IDEA
      JUnitStarter.main
      1. com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:253)
      2. com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:84)
      2 frames
    7. Java RT
      Method.invoke
      1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      2. sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      3. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      4. java.lang.reflect.Method.invoke(Method.java:483)
      4 frames
    8. IDEA
      AppMain.main
      1. com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
      1 frame