java.lang.NullPointerException

Stack Overflow | Piara Sandhu | 7 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