query: Null pointer after implementing custom events, have no idea what's missing
positive_passages.docid: 49
positive_passages.text: What is a NullPointerException, and how do I fix it?
negative_passages.docid: 18925
negative_passages.text: Why are my fields initialized to null or to the default value of zero when I've declared and initialized them in my class' constructor?
negative_passages.docid: 92053
negative_passages.text: How to implement events through interface in C#?
negative_passages.docid: 73120
negative_passages.text: Nullpointerexception when trying to send data from activity to class
negative_passages.docid: 107423
negative_passages.text: After ExecuteScalar: Object reference not set etc
negative_passages.docid: 64332
negative_passages.text: avoiding null reference exceptions
negative_passages.docid: 64440
negative_passages.text: Is there a downside to adding an anonymous empty delegate on event declaration?
negative_passages.docid: 1605
negative_passages.text: What is the reason behind "non-static method cannot be referenced from a static context"?
negative_passages.docid: 37702
negative_passages.text: pygame.event.get() not returning any events when inside a thread
negative_passages.docid: 95883
negative_passages.text: Why is 'event' variable available even when not passed as a parameter?
negative_passages.docid: 3679
negative_passages.text: Unable to understand useCapture parameter in addEventListener
negative_passages.docid: 20020
negative_passages.text: NullPointerException accessing views in onCreate()
negative_passages.docid: 111592
negative_passages.text: Sending My Own Arguments To A Event Handler?
negative_passages.docid: 8808
negative_passages.text: Strange Java null behavior in Method Overloading
negative_passages.docid: 115008
negative_passages.text: Is it possible to pass arguments into event bindings?
negative_passages.docid: 59570
negative_passages.text: What is wrong with combining two programs with event handlers?
negative_passages.docid: 35129
negative_passages.text: Why does String.valueOf(null) throw a NullPointerException?