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 using for each loop.

  • Removing the elements from an ArrayList object without decrementing the loop control variable during the traversal using for 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 the ArrayList was declared.

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