java.lang.NullPointerException: This exception has no message.

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One of the variables you're using is set to Null or you're passing a Null value to a method expecting another kind of value

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via Coderanch by Garrett Rowe, 1 year ago
This exception has no message.
via coderanch.com by Unknown author, 2 years ago
java.lang.NullPointerException:
at undefined.Person.getName(Person.java:210)
at undefined.FamilyTree.display(FamilyTree.java:48)
at undefined.Main.main(Main.java:59)

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