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    Thrown when an application is trying to use or access an object whose reference equals to null. You are probably trying to use a reference that points to no location in memory as though it were referencing an object.

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via Oracle Community by 69507, 1 year ago
via by gilh, 1 year ago
via Stack Overflow by Gyowanny Pessatto Queiroz
, 2 years ago
This exception has no message.
via by Unknown author, 2 years ago
via GitHub by noderblade
, 1 year ago
This exception has no message.
via GitHub by ggvw
, 1 year ago
This exception has no message.
java.lang.NullPointerException: 	at java.util.Hashtable.put(	at java.util.Properties.setProperty(	at java.lang.System.setProperty(	at	at