Java Collection Tutorial - Java List.indexOf(Object o)

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Syntax

List.indexOf(Object o) has the following syntax.

int indexOf(Object o)

Example

In the following code shows how to use List.indexOf(Object o) method.

import java.util.Arrays;
import java.util.List;

public class Main {
  public static void main(String[] a) {
    List list = Arrays.asList(new String[] { "A", "B", "C", "D" });
    System.out.println(list.indexOf("A"));
  }
}

The code above generates the following result.

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