query: Why am I getting null pointer when accessing files on Tomcat (using HttpServlet)?
positive_passages.docid: 49
positive_passages.text: What is a NullPointerException, and how do I fix it?
negative_passages.docid: 20020
negative_passages.text: NullPointerException accessing views in onCreate()
negative_passages.docid: 94716
negative_passages.text: org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 15
negative_passages.docid: 42176
negative_passages.text: How to config Tomcat to serve images from an external folder outside webapps?
negative_passages.docid: 34447
negative_passages.text: AppDomain.Load() fails with FileNotFoundException
negative_passages.docid: 10737
negative_passages.text: Where to place and how to read configuration resource files in servlet based application?
negative_passages.docid: 98074
negative_passages.text: jQuery.ajax gives "TypeError: Cannot read property 'documentElement' of null" on server but not local
negative_passages.docid: 10581
negative_passages.text: Avoiding NullPointerException in Java
negative_passages.docid: 24836
negative_passages.text: HTTP request parameters are not available by request.getAttribute()
negative_passages.docid: 135517
negative_passages.text: How do I check if a file exists in Java?
negative_passages.docid: 289
negative_passages.text: What is a NullReferenceException, and how do I fix it?
negative_passages.docid: 6283
negative_passages.text: How should I connect to JDBC database / datasource in a servlet based application?
negative_passages.docid: 35129
negative_passages.text: Why does String.valueOf(null) throw a NullPointerException?
negative_passages.docid: 32342
negative_passages.text: how to get a client's MAC address from HttpServlet?
negative_passages.docid: 76090
negative_passages.text: How can I share a variable or object between two or more Servlets?
negative_passages.docid: 141129
negative_passages.text: InputStream returning NullPointerException (Java)
negative_passages.docid: 134836
negative_passages.text: UnauthorizedAccessException cannot resolve Directory.GetFiles failure