Java ArrayList listIterator() to iterate through elements of an ArrayList

ArrayList

ArrayList.listIterator() traverse the list in both direction of the ArrayList
We have to add the utility class .

import java.util.ListIterator;

Examples with output

add()

ArrayList<Integer> marks = new ArrayList<Integer>();
	
marks.add(51);
marks.add(52);
marks.add(53);
marks.add(54);
System.out.println(marks); // [51, 52, 53, 54]

ListIterator<Integer> my_iterator = marks.listIterator();  

while(my_iterator.hasNext()){
System.out.println(my_iterator.next());
}

Output

[55, 54, 55, 54]
55
54
55
54

In above code we have used next() and hasNext(), now we will traverse in reverse direction by using previous() and hasPrevious().

ArrayList<Integer> marks = new ArrayList<Integer>();
	
marks.add(51);
marks.add(52);
marks.add(53);
marks.add(54);
System.out.println(marks); // [51, 52, 53, 54]

ListIterator<Integer> my_iterator = marks.listIterator();  

while(my_iterator.hasNext()){
System.out.println(my_iterator.next());
}
System.out.println("Forward traversing is over. ");
while(my_iterator.hasPrevious()){
System.out.println(my_iterator.previous());
}

Output

[51, 52, 53, 54]
51
52
53
54
Forward traversing is over. 
54
53
52
51

ArrayList Tutorials

add() contains() clear() clone() Java - Tutorials

ArrayList.listIterator()

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