I can not use the method .equals(..), it throws NullPointerException
49
What is a NullPointerException, and how do I fix it?
40818
What is an IndexOutOfRangeException / ArgumentOutOfRangeException and how do I fix it?
69771
NullPointerException when setting attribute?
65815
How to pass a value from one Activity to another in Android?
66284
NullPointerException when Creating an Array of objects
78156
String.equals() with multiple conditions (and one action on result)
130819
Nullpointerexception while setting a bean
134644
Compare two objects with .equals() and == operator
148619
Is there a reason not to use  (null safe equals operator) in mysql instead of =?
144658
System.NullPointerException: Attempt to de-reference a null object ,sravn
64200
Can Java's NullPointerException be changed to report on which variable was null?
137545
"'void' type not allowed here" error (Java)
126
How do I compare strings in Java?
33103
How come invoking a (static) method on a null reference doesn't throw NullPointerException?
33981
How to override equals method in Java
78285
How to check for equals? (0 == i) or (i == 0)
108336
Nullable Object must have a value #2