query: java.lang.NullPointerException while creating BinaryTree from preorder and inorder
positive_passages.docid: 49
positive_passages.text: What is a NullPointerException, and how do I fix it?
negative_passages.docid: 8283
negative_passages.text: Why does null reference print as "null"
negative_passages.docid: 87189
negative_passages.text: System.NullPointerException
negative_passages.docid: 85964
negative_passages.text: Android: ClassNotFoundException when passing serializable object to Activity
negative_passages.docid: 66307
negative_passages.text: A field initializer cannot reference the nonstatic field, method, or property
negative_passages.docid: 74172
negative_passages.text: Binary XML file line #2: Error inflating class android.widget.LinearLayout
negative_passages.docid: 35590
negative_passages.text: How to fix NullPointerException in Java?
negative_passages.docid: 69771
negative_passages.text: NullPointerException when setting attribute?
negative_passages.docid: 96954
negative_passages.text: JPA/Hibernate Static Metamodel Attributes not Populated -- NullPointerException
negative_passages.docid: 119573
negative_passages.text: NullPointerException in Java with no StackTrace
negative_passages.docid: 10867
negative_passages.text: How to avoid ArrayIndexOutOfBoundsException or IndexOutOfBoundsException?
negative_passages.docid: 144423
negative_passages.text: "No enclosing instance of type" error while calling method from another class in Android
negative_passages.docid: 98780
negative_passages.text: Test Method throwing null pointer exception on custom setting
negative_passages.docid: 87728
negative_passages.text: ArgumentNullException or NullReferenceException from extension method?
negative_passages.docid: 480
negative_passages.text: What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it?
negative_passages.docid: 139395
negative_passages.text: com.sun.istack.SAXException2 : Instance ... is substituting "java.lang.Object", but ... is bound to an anonymous type
negative_passages.docid: 84461
negative_passages.text: Unable instantiate android.gms.maps.MapFragment