principal.getName() throws NullPointer in a RestController Post method
49
What is a NullPointerException, and how do I fix it?
29271
*.xhtml url-pattern causes java.lang.NullPointerException at com.sun.faces.context.flash.ELFlash.loggingGetPhaseMapForReading
18116
java.lang.IllegalArgumentException: The servlets named [X] and [Y] are both mapped to the url-pattern [/url] which is not permitted
138564
How to convert a JSON requestBody of the RestRequest to a Map of Strings?
37988
System.NullPointerException: Attempt to de-reference a null object:
138823
Why cast null to Object?
115989
function in apex controller recieves value "NULL"
10878
What causes "java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'command' available as request attribute"?
79477
Why is "null" present in C# and Java?
13711
java.lang.NullPointerException at org.glassfish.hk2.classmodel.reflect.impl.TypesImpl.getType
123437
Where are the request method constants in the Servlet API?
79586
System.NullPointerException: Attempt to de-reference a null object
67597
Can constructor return a null object?
92797
How to debug NullPointerException in selenium-java
17708
why doesnt my jsp request.getParameter() get the data?
130819
Nullpointerexception while setting a bean
111216
soapUI - REST API, parameters as variables in request body are empty (*previously posted as guest by accident)