query: why have an NullPointerException that I execute the request?
positive_passages.docid: 49
positive_passages.text: What is a NullPointerException, and how do I fix it?
negative_passages.docid: 2116
negative_passages.text: IllegalArgumentException or NullPointerException for a null parameter?
negative_passages.docid: 8738
negative_passages.text: Should a retrieval method return 'null' or throw an exception when it can't produce the return value?
negative_passages.docid: 18250
negative_passages.text: What could cause java.lang.reflect.InvocationTargetException?
negative_passages.docid: 130819
negative_passages.text: Nullpointerexception while setting a bean
negative_passages.docid: 81624
negative_passages.text: Is returning null bad design?
negative_passages.docid: 10581
negative_passages.text: Avoiding NullPointerException in Java
negative_passages.docid: 73120
negative_passages.text: Nullpointerexception when trying to send data from activity to class
negative_passages.docid: 128142
negative_passages.text: java.lang.NullPointerException at org.apache.jsp.foo_jsp._jspInit(foo_jsp.java:22)
negative_passages.docid: 64332
negative_passages.text: avoiding null reference exceptions
negative_passages.docid: 35016
negative_passages.text: java.lang.NullPointerException at org.primefaces.component.datatable.feature.FilterFeature.filter
negative_passages.docid: 40818
negative_passages.text: What is an IndexOutOfRangeException / ArgumentOutOfRangeException and how do I fix it?
negative_passages.docid: 37988
negative_passages.text: System.NullPointerException: Attempt to de-reference a null object:
negative_passages.docid: 54143
negative_passages.text: Why is the default value of the string type null instead of an empty string?
negative_passages.docid: 156400
negative_passages.text: NullReferenceException when using NUnit
negative_passages.docid: 94342
negative_passages.text: Java - class.getResource returns null
negative_passages.docid: 138686
negative_passages.text: Servlet: java.lang.ClassNotFoundException: org.json.simple.parser.ParseException