Attempt to invoke virtual method 'java.lang.String com.google.gson.JsonObject.toString()' on a null object reference
49
What is a NullPointerException, and how do I fix it?
134689
Setting an object to null vs Dispose()
23999
NullPointerException while parsing XML callout response
38780
Checking for null before ToString()
13711
java.lang.NullPointerException at org.glassfish.hk2.classmodel.reflect.impl.TypesImpl.getType
289
What is a NullReferenceException, and how do I fix it?
135931
What does "Method '~' of object '~' failed" at runtime mean?
73120
Nullpointerexception when trying to send data from activity to class
73034
StringBuilder append() and null values
132398
What is null in Java?
19989
Apex JSON.serialize() with null values (RELOADED)
98426
Using org.json in Servlet causes java.lang.ClassNotFoundException: org.json.JSONException
99648
Convert a JSON string to object in Java ME?
103797
Android:android.view.ViewRoot$CalledFromWrongThreadException - How to solve the problem?
114816
Is null reference possible?
141129
InputStream returning NullPointerException (Java)
54938
Cannot invoke method or retrieve property from null object. Object returned by the following call stack is null. \"File\r\n\"