query: Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null object reference at
positive_passages.docid: 49
positive_passages.text: What is a NullPointerException, and how do I fix it?
negative_passages.docid: 43489
negative_passages.text: Why does Boolean.ToString output "True" and not "true"
negative_passages.docid: 36686
negative_passages.text: Comparing strings with == which are declared final in Java
negative_passages.docid: 156920
negative_passages.text: Java.lang.verifyerror how do I fix or even find out the root cause?
negative_passages.docid: 126
negative_passages.text: How do I compare strings in Java?
negative_passages.docid: 73430
negative_passages.text: C# .Equals(), .ReferenceEquals() and == operator
negative_passages.docid: 137403
negative_passages.text: How to best implement Equals for custom types?
negative_passages.docid: 108336
negative_passages.text: Nullable Object must have a value #2
negative_passages.docid: 37988
negative_passages.text: System.NullPointerException: Attempt to de-reference a null object:
negative_passages.docid: 33772
negative_passages.text: Is there any difference in equals and == for String variables?
negative_passages.docid: 89755
negative_passages.text: Why is "throw null" not creating a compilation error in Java?
negative_passages.docid: 53319
negative_passages.text: ArgumentException or ArgumentNullException for string parameters?
negative_passages.docid: 54938
negative_passages.text: Cannot invoke method or retrieve property from null object. Object returned by the following call stack is null. \"File\r\n\"
negative_passages.docid: 47233
negative_passages.text: Cannot perform instanceof check against parameterized type ArrayList
negative_passages.docid: 96453
negative_passages.text: Caught Throwable or Exception is null
negative_passages.docid: 36270
negative_passages.text: Nullable type issue with ?: Conditional Operator
negative_passages.docid: 120071
negative_passages.text: Checking for a null int value from a Java ResultSet