When you have an array, you may reference the contents of that array by using the index (the position of the element in the array) ... like
String[] names = {"myName", "yourName"};
where
names[0] is the first element (i.e. myName)
names[1] is the second element (i.e. yourName)
Each time you get an element using its index, you are dereferencing that array.