Common Mistakes To Avoid
Understand the common mistakes and errors in order to avoid them.
We'll cover the following
❌ Common pitfalls
The following common mistakes should be avoided:
-
Not importing an
ArrayList
library before using it -
Removing the elements from
ArrayList
object during the traversal usingfor each
loop. -
Removing the elements from an
ArrayList
object without decrementing the loop control variable during the traversal usingfor
loop -
Not specifying the type of
ArrayList
object during declaration in<>
-
Adding an element of a different type in an
ArrayList
object instead of the type specified when declared -
Accessing the wrong index when using the
set()
method -
Storing an element in a different type of variable, when using
get()
, from the type specified when theArrayList
was declared.
Get hands-on with 1400+ tech skills courses.