query: How to solve Object reference not set to an instance of an object.?
positive_passages.docid: 289
positive_passages.text: What is a NullReferenceException, and how do I fix it?
negative_passages.docid: 32065
negative_passages.text: Attempt to de-reference a null object: Trigger
negative_passages.docid: 109479
negative_passages.text: Class variables not yet supported
negative_passages.docid: 127599
negative_passages.text: Odd situation for "cannot reference this before supertype constructor has been called"
negative_passages.docid: 144658
negative_passages.text: System.NullPointerException: Attempt to de-reference a null object ,sravn
negative_passages.docid: 9073
negative_passages.text: Cannot make a static reference to the non-static method
negative_passages.docid: 126921
negative_passages.text: Nonstatic method cannot be reference from a Static context
negative_passages.docid: 18225
negative_passages.text: Why does my object not show up?
negative_passages.docid: 60500
negative_passages.text: List has No Rows for Assignment to SObject: Error
negative_passages.docid: 29404
negative_passages.text: What does "Incompatible types: void cannot be converted to ..." mean?
negative_passages.docid: 816
negative_passages.text: What is the difference between a variable, object, and reference?
negative_passages.docid: 80299
negative_passages.text: Java Error: Cannot make a static reference to the non-static method
negative_passages.docid: 134067
negative_passages.text: why __getitem__ cannot be classmethod?
negative_passages.docid: 10867
negative_passages.text: How to avoid ArrayIndexOutOfBoundsException or IndexOutOfBoundsException?
negative_passages.docid: 104585
negative_passages.text: How to refer to the outer class in another instance of a non-static inner class?
negative_passages.docid: 35590
negative_passages.text: How to fix NullPointerException in Java?
negative_passages.docid: 599
negative_passages.text: Is Java "pass-by-reference" or "pass-by-value"?