java.lang.NullPointerException

Stack Overflow | blackjack | 4 months ago
tip
Do you find the tips below useful? Click on the to mark them and say thanks to bernardpaulus , rafael and rafael . Or join the community to write better ones.
  1. 0
    samebug tip
    You've got a kotlin TODO, fix it :)
  2. 0

    Junit test for regular expression in android

    Stack Overflow | 4 months ago | blackjack
    java.lang.NullPointerException
  3. 0
    samebug tip
    CertStore.getCertificates() returns a HashSet, and this doesn't guarantee that the certificates will come ordered as desired, so you might have to use a Collection.toArray() and order them by serial number to be sure which one is which.
  4. Speed up your debug routine!

    Automated exception search integrated into your IDE

  5. 0
    samebug tip
    Check if your path is correct, if it's correct already you have to register your path to the mapping configuration.
  6. 0
    samebug tip
    There's probably a problem with your dependencies, check if you used "hadoop-yarn-common". Also check if you have the right version of hadoop for the version of mapreduce that you're using.

    Not finding the right solution?
    Take a tour to get the most out of Samebug.

    Tired of useless tips?

    Automated exception search integrated into your IDE

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at student.com.nm.studentreg.StudentRegPresenter.onRegisterButtonClicked()
    2. student.com.nm
      StudentRegTest.shouldShowErrorMessageWhenNameHavingNumber
      1. student.com.nm.studentreg.StudentRegPresenter.onRegisterButtonClicked(StudentRegPresenter.java:46)
      2. student.com.nm.studentreg.StudentRegTest.shouldShowErrorMessageWhenNameHavingNumber(StudentRegTest.java:42)
      2 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:498)
      4 frames
    4. JUnit
      ParentRunner.run
      1. org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
      2. org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
      3. org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
      4. org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
      5. org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
      6. org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
      7. org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
      8. org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
      9. org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
      10. org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
      11. org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
      12. org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
      13. org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
      14. org.junit.runners.ParentRunner.run(ParentRunner.java:363)
      14 frames
    5. Mockito
      MockitoJUnitRunner.run
      1. org.mockito.internal.runners.JUnit45AndHigherRunnerImpl.run(JUnit45AndHigherRunnerImpl.java:37)
      2. org.mockito.runners.MockitoJUnitRunner.run(MockitoJUnitRunner.java:62)
      2 frames
    6. JUnit
      JUnitCore.run
      1. org.junit.runner.JUnitCore.run(JUnitCore.java:137)
      1 frame
    7. IntelliJ junit4 module
      JUnit4IdeaTestRunner.startRunnerWithArgs
      1. com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:119)
      2. com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:42)
      2 frames
    8. IDEA
      JUnitStarter.main
      1. com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:234)
      2. com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:74)
      2 frames
    9. 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:498)
      4 frames
    10. IDEA
      AppMain.main
      1. com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
      1 frame