Attempt to invoke virtual method 'java.util.Iterator java.util.ArrayList
49
What is a NullPointerException, and how do I fix it?
114765
Why does casting an ArrayList 's generic to a superclass not work?
40818
What is an IndexOutOfRangeException / ArgumentOutOfRangeException and how do I fix it?
58278
Why does Iterable not provide stream() and parallelStream() methods?
70732
How can I throw an exception for the whole class instead of doing it method by method
88563
Exception cannot be converted to Throwable
117655
What is the benefit of polymorphism using Collection interface to create ArrayList object?
107550
Iterating over Java collections in Scala
35448
Virtual multiple inheritance - final overrider
2116
IllegalArgumentException or NullPointerException for a null parameter?
171
Iterating through a Collection, avoiding ConcurrentModificationException when removing objects in a loop
95
Calling virtual functions inside constructors
77638
Calling Table with custom iterator
55951
Passing arraylist of objects between activities
147603
How can I call a method in an object from outside the JVM?
124289
Python multi-loop failed when with generator and iterator
47196
Ways to iterate over a list in Java