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Text lesson

indexOf()

Example

Determine the location of an item within a list.

import java.util.LinkedList;

public class Main {

public static void main(String[] args) {

LinkedList<String> cars = new LinkedList<String>();

cars.add("Volvo");

cars.add("BMW");

cars.add("Ford");

cars.add("Mazda"); S

ystem.out.println(cars.indexOf("Ford"));

}

Definition and Usage

The indexOf() method retrieves the index of the first occurrence of a value in the list. If the item is not present in the list, it returns -1.

Syntax

public int indexOf(Object item)

Parameter Values

Parameter	Description
item	Mandatory. The item to be searched for within the list.

Technical Details

Returns:

The index of the initial occurrence of the item in the list, or -1 if the item is not found.