List lastIndexOf() Method in Java with Examples

This method returns the last index of the occurrence of the specified element in this list, or -1 if this list does not contain the element.

Syntax: 

int lastIndexOf(Object o)

Parameters: This function has a single parameter, i.e, the element to be searched in the list.

Returns: This method returns the last index of occurrence of the given element in the list and returns “-1” if element is not in the list.

Below programs show the implementation of this method.

Program 1:

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// Java code to show the implementation of
// lastIndexOf method in list interface
import java.util.*;
public class GfG {
  
    // Driver code
    public static void main(String[] args)
    {
  
        // Initializing a list of type Linkedlist
        List<Integer> l = new LinkedList<>();
        l.add(1);
        l.add(3);
        l.add(5);
        l.add(7);
        l.add(3);
        System.out.println(l);
        System.out.println(l.lastIndexOf(3));
    }
}

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Output:


[1, 3, 5, 7, 3]
4





Program 2: Below is the code to show implementation of list.lastIndexOf() using Linkedlist.











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// Java code to show the implementation of 


// lastIndexOf method in list interface 


import java.util.*; 


public class GfG { 


  


    // Driver code 


    public static void main(String[] args) 


    { 


  


        // Initializing a list of type Linkedlist 


        List<String> l = new LinkedList<>(); 


        l.add("10"); 


        l.add("30"); 


        l.add("50"); 


        l.add("70"); 


        l.add("30"); 


        System.out.println(l); 


        System.out.println(l.lastIndexOf("30")); 


    } 


} 



















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Output:


[10, 30, 50, 70, 30]
4





Reference: 

Oracle Docs



          
          
          
          

            

    

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