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Traversing an ArrayList

Traversing an ArrayList

Get familiar with different traversal techniques for an ArrayList object.

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Just like we can use iteration statements to traverse arrays, we can apply them in the case of an ArrayList too.

Traversal with the for loop

Look at the program below.

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import java.util.ArrayList;
class ArrayListTraversal
{
    public static void main(String args[]) 
    {
        ArrayList<String> students = new ArrayList<String>();   // empty list
        // Adding elements
        students.add("James");
        students.add("Allen");
        for(int i = 0; i < students.size(); i++) // Traversing ArrayList
        {
            System.out.println(students.get(i));
        }
    }
}

Initially, we create an empty ArrayList with the name: students. Then, we add James and Allen to it. Now, look at line 13. We have a for loop that traverses students.size() ...