Move Specific Item in ArrayList to First Position in Java

To move an item from an ArrayList and add it to the first position you need to -

• Get the position (index) of the item using the indexOf() method of the ArrayList class.
• Remove it using the remove() method of the ArrayList class.
• Finally, add it to the index 0 using the add() method of the ArrayList class.

Example

Live Demo

import java.util.ArrayList;

public class ArrayListSample {
   public static void main(String args[]) {
      ArrayList al = new ArrayList();
      al.add("JavaFX");
      al.add("HBase");
      al.add("WebGL");
      al.add("OpenCV");
      System.out.println(al);
      String item = "WebGL";
      int itemPos = al.indexOf(item);
      al.remove(itemPos);
      al.add(0, item );
      System.out.println(al);
   }
}

Output

[JavaFX, HBase, WebGL, OpenCV]
[WebGL, JavaFX, HBase, OpenCV]