Java ArrayList indexof() Method


 

Java ArrayList indexof() Method

This section demonstrates how to use the indexOf() method in Java Program.

This section demonstrates how to use the indexOf() method in Java Program.

  • It returns the index of the given element present in the ArrayList
  • If there is more than one occurrence of the element then returns the last occurrence.
  • If no element is present then returns the -1.


Example of Java Arraylist indexof() Function
import java.util.*;

public class List1 {

public static void main(String[] args) {
String  ar[]={"india","pakistan","United Kingdom","Japan"};
List list=new ArrayList();
list.add(ar[0]);
list.add(ar[1]);
list.add(ar[2]);
list.add(ar[3]);
System.out.println(list.indexOf("Japan"));
System.out.println(list.indexOf(ar[2]));

}
}
Output
3
2

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