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Java - remove items from ArrayList using Iterator

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Created by:

isherwood

599

In this article, we would like to show you how to remove items from ArrayList using Iterator in Java.

Quick solution:

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Iterator<String> myIterator = letters.iterator();
​
while (myIterator.hasNext()) {
    if (myIterator.next() == "B") {
        myIterator.remove();
    }
}

String ArrayList example

Edit

In this example, we use Iterator to remove "B" element from the letters ArrayList.

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package arraylistOperations;
​
import java.util.*;
​
public class Example {
​
    public static void main(String[] args) {
        List<String> letters = new ArrayList<>();
​
        letters.add("A");
        letters.add("B");
        letters.add("C");
​
        Iterator<String> myIterator = letters.iterator();
​
        while (myIterator.hasNext()) {
            if (myIterator.next() == "B") {
                myIterator.remove();
            }
        }
        System.out.println(letters);
    }
}

Output:

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[A, C]

Integer ArrayList example

Edit

In this example, we remove all items with a value less than 2 from the numbers ArrayList using Iterator.

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import java.util.*;
​
public class Example {
​
    public static void main(String[] args) {
        List<Integer> numbers = new ArrayList<>();
​
        numbers.add(1);
        numbers.add(2);
        numbers.add(3);
        numbers.add(4);
​
        Iterator<Integer> myIterator = numbers.iterator();
​
        while (myIterator.hasNext()) {
            if (myIterator.next() < 3) {
                myIterator.remove();
            }
        }
        System.out.println(numbers);
    }
}