nullpointerexception 257

  1. Avoiding != null statements
  2. Is null check needed before calling instanceof?
  3. Which @NotNull Java annotation should I use?
  4. IllegalArgumentException or NullPointerException for a null parameter?
  5. Why is my Spring @Autowired field null?
  6. Why can I throw null in Java?
  7. NullPointerException in Java with no StackTrace
  8. Best explanation for languages without null
  9. What is a NullPointerException, and how do I fix it?
  10. What is a NullPointerException, and how do I fix it?
  11. Tricky ternary operator in Java - autoboxing
  12. Why explicitly throw a NullPointerException rather than letting it happen naturally?
  13. Android - How To Override the “Back” button so it doesn't Finish() my Activity?
  14. Java 8 NullPointerException in Collectors.toMap
  15. No Exception while type casting with a null in java
  16. Android. Fragment getActivity() sometimes returns null
  17. Converting a Date object to a calendar object
  18. Booleans, conditional operators and autoboxing
  19. Boolean.valueOf() produces NullPointerException sometimes
  20. Why does String.valueOf(null) throw a NullPointerException?
  21. Null check chain vs catching NullPointerException
  22. Eclipse / Android : “Errors running builder 'Android Pre Compiler' on project…”
  23. NullPointerException accessing views in onCreate()
  24. Why is this not throwing a NullPointerException?
  25. Why do Double.parseDouble(null) and Integer.parseInt(null) throw different exceptions?
  26. Why does int num = Integer.getInteger(“123”) throw NullPointerException?
  27. Is it a bad idea if equals(null) throws NullPointerException instead?
  28. Can't find @Nullable inside javax.annotation.*
  29. How to use @Nullable and @Nonnull annotations more effectively?
  30. Android: Pass data(extras) to a fragment
  31. Why comparing Integer with int can throw NullPointerException in Java?
  32. Android - NullPointerException on SearchView in Action Bar
  33. Loading image resource
  34. How come invoking a (static) method on a null reference doesn't throw NullPointerException?
  35. getActionBar() returns Null (AppCompat-v7 21)
  36. NPE while inflating layout (Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null object reference)
  37. NullPointer on toLowerCase but I don't use that method anywhere
  38. Catching exceptions thrown from native code running on Android
  39. Why static fields are not initialized in time?
  40. Is it okay to throw NullPointerException programmatically?
  41. Java conditional operator ?: result type
  42. JavaFX Location is not set error message
  43. Null pointer Exception - findViewById()
  44. printStackTrace to java.util.logging.Logger
  45. Why does Java compiler allow static variable access through null object?
  46. How to trace a NullPointerException in a chain of getters
  47. NullPointerException when Creating an Array of objects
  48. NullPointerException on getActivity().runOnUiThread(new Runnable(){
  49. How to check if array element is null to avoid NullPointerException in Java
  50. Best way to check for null values in Java?