java.lang.String java.lang.Object.toString() on a null object reference
49
What is a NullPointerException, and how do I fix it?
80631
NullPointerException but compiling?
88920
Is using NULL references OK?
10818
NullPointerException : println needs a message in android
149666
Why can't a null-reference exception name the object that has a null reference?
13711
java.lang.NullPointerException at org.glassfish.hk2.classmodel.reflect.impl.TypesImpl.getType
75428
LINQ to Entities does not recognize the method 'System.String ToString()' method, and this method cannot be translated into a store expression
42958
Method Overloading for null argument
2097
Why does Oracle 9i treat an empty string as NULL?
641
Which overload will get selected for null in Java?
54938
Cannot invoke method or retrieve property from null object. Object returned by the following call stack is null. \"File\r\n\"
92187
Unable to cast object of type 'System.DBNull' to type 'System.String`
289
What is a NullReferenceException, and how do I fix it?
64332
avoiding null reference exceptions
32059
What is \null and when do we need to use it?
98080
Android: Cannot invoke toString() on the primitive type int
99170
Convert string in dot notation to get the object reference