Java program to find index of an element from an ArrayList

Consider the program

import java.util.ArrayList;

public class SearchAnElement {
  public static void main(String[] args) {
    //ArrayList object 
    ArrayList arrList = new ArrayList();

    //adding elements in the list
    arrList.add("100");
    arrList.add("200");
    arrList.add("300");
    arrList.add("400");
    arrList.add("500");

    //searching element "300"
    int index = arrList.indexOf("300");
    if (index == -1)
      System.out.println("Element is not found in the list");
    else
      System.out.println("Element found @ index: " + index);
  }
}

Output

Element found @ index: 2