query: Attempt to invoke interface method 'java.util.Iterator java.util.List.iterator()' on a null object
positive_passages.docid: 49
positive_passages.text: What is a NullPointerException, and how do I fix it?
negative_passages.docid: 29351
negative_passages.text: Getting a ConcurrentModificationException thrown when removing an element from a java.util.List during list iteration?
negative_passages.docid: 28147
negative_passages.text: java: (String[])List.toArray() gives ClassCastException
negative_passages.docid: 88920
negative_passages.text: Is using NULL references OK?
negative_passages.docid: 89755
negative_passages.text: Why is "throw null" not creating a compilation error in Java?
negative_passages.docid: 154262
negative_passages.text: List has no rows for assignment to SObject
negative_passages.docid: 32065
negative_passages.text: Attempt to de-reference a null object: Trigger
negative_passages.docid: 67299
negative_passages.text: "Instantiating" a List in Java?
negative_passages.docid: 17784
negative_passages.text: Java if ternary operator and Collections.emptyList()
negative_passages.docid: 96453
negative_passages.text: Caught Throwable or Exception is null
negative_passages.docid: 101146
negative_passages.text: Why can't I write Nullable>?
negative_passages.docid: 114816
negative_passages.text: Is null reference possible?
negative_passages.docid: 47233
negative_passages.text: Cannot perform instanceof check against parameterized type ArrayList
negative_passages.docid: 2116
negative_passages.text: IllegalArgumentException or NullPointerException for a null parameter?
negative_passages.docid: 85865
negative_passages.text: Optional Methods in Java Interface
negative_passages.docid: 63080
negative_passages.text: Odd method call in java using a dot operator to access a generic list
negative_passages.docid: 110721
negative_passages.text: Nullable types and the ternary operator: why is `? 10 : null` forbidden?