null pointer exception on argument from constructor
49
What is a NullPointerException, and how do I fix it?
67597
Can constructor return a null object?
79586
System.NullPointerException: Attempt to de-reference a null object
57685
Calling method from constructor
107603
Creating an instance using the class name and calling constructor
79477
Why is "null" present in C# and Java?
64200
Can Java's NullPointerException be changed to report on which variable was null?
55274
Java: Exception itself is null
125134
Instantiating object of type parameter
131864
Member '' cannot be accessed with an instance reference
8283
Why does null reference print as "null"
18925
Why are my fields initialized to null or to the default value of zero when I've declared and initialized them in my class' constructor?
33103
How come invoking a (static) method on a null reference doesn't throw NullPointerException?
60420
Can constructors throw exceptions in Java?
35590
How to fix NullPointerException in Java?
146123
Constructor arguments from tuple
118541
How to pass a default argument value of an instance member to a method?