Java .remove()

The .remove() method removes an item from the underlying collection of an Iterator or a ListIterator object. This method removes the current element (i.e., the one returned by the last .next() or .previous() method).

Syntax

iterator.remove();

Where iterator is an Iterator or ListIterator object.

Example

This example populates an ArrayList and then removes the even items with the .remove() method:

import java.util.*;

public class Example {
  public static void main(String args[]) {
    // Create a new ArrayList
    ArrayList l = new ArrayList();

    // Add some items to the ArrayList
    l.add(1);
    l.add(2);
    l.add(3);
    l.add(4);
    l.add(5);

    Iterator i = l.iterator();

    // Loop through ArrayList contents
    while(i.hasNext()) {
      int item = (Integer) i.next();
      // If item is even remove the element
      if (item % 2 == 0) {
        i.remove();
        }
    }
    System.out.println(l);
  }
}

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This results in the following output:

[1, 3, 5]

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