CSIS 110 - Lecture 15
Announcements
Quiz – next Wedsnesday
Turn in Homework
Let's look at some code for arrays and ArrayLists.
First, let's declare an array and an ArrayList of String:
private String[] theArray = new String[50];
private ArrayList<String> = new ArrayList<String>();
Now, what do we need to do to keep track of the size (the number of elements that
contain data)?
- ArrayList does it automatically for us
- We need to use another variable to keep track of elements being used in the array:
private int count = 0;
Now, how do we put an element in the next position in the array or the ArrayList? [Don't
forget about count].
How do we access an element at position i? [What happens if i < 0 or i >= count?]
How do we print all of the values in the array or the ArrayList?
How do we search for the value "Brian"?
Lab
Work on programming assignment