Why am I getting a nullpointer exception? (Beginner)
49
What is a NullPointerException, and how do I fix it?
64332
avoiding null reference exceptions
66284
NullPointerException when Creating an Array of objects
69771
NullPointerException when setting attribute?
33103
How come invoking a (static) method on a null reference doesn't throw NullPointerException?
73034
StringBuilder append() and null values
3889
Why am I getting a NoClassDefFoundError in Java?
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?
80631
NullPointerException but compiling?
131864
Member '' cannot be accessed with an instance reference
17877
Why are local variables not initialized in Java?
11537
What is IndexOutOfBoundsException? How can I fix it?
20892
C# nullable string error
480
What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it?
81518
Find out what variable is throwing a NullPointerException programmatically
35047
Uninitialized variables and members in Java
101449
Using methods from another class in the main?