How to Get Index of ArrayList Element in Java


In this example, we will learn how to search an element of ArrayList object with contains, indexOf and lastIndexOf methods in Java.

Source Code

package com.beginner.examples;

import java.util.ArrayList;

public class SearchArrayListElementExample {

	public static void main(String[] args) {

		ArrayList al = new ArrayList();
		//
		al.add("A");
		al.add("B");
		al.add("C");
		al.add("D");

		// The indexOf() method returns the indexOf this element,
		// or -1 if it does not exist
		int result = al.indexOf("C");
		int result1 = al.indexOf("F");

		System.out.println("Element C:" + result + "nElement F:" + result1);

	}

}

Output:

Element C:2
Element F:-1

References

Imported packages in Java documentation:

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