Java Collections lastlastIndexOfSubList() Method with Example

Collections Class lastIndexOfSubList() method: Here, we are going to learn about the lastIndexOfSubList() method of Collections Class with its syntax and example.
Submitted by Preeti Jain, on February 03, 2020

Collections Class lastIndexOfSubList() method

lastIndexOfSubList() method is available in java.util package.
lastIndexOfSubList() method is used to return the starting index of the last occurrence of the given (dest) list within the given source list (src).
lastIndexOfSubList() method is a static method, so it is accessible with the class name and if we try to access the method with the class object then we will not get an error.
lastIndexOfSubList() method does not throw an exception at the time of returning the index of the last occurrence of the given List (dest).

Syntax:

    public static int lastIndexOfSubList(List src, List dest);

Parameter(s):

List src – represents the source list in which to filter the last occurrence of the given list(dest).
List dest – represents the targeted list(dest) to filter sublist of the given source list(src).

Return value:

The return type of this method is int, it returns starting index of the last occurrence of the given sublist (dest) within the given source list(src) otherwise it returns -1 when no search found or list empty.

Example:

// Java program is to demonstrate the example
// of int lastIndexOfSubList() of Collections

import java.util.*;

public class LastIndexOfSubList {
    public static void main(String args[]) {
        // Instantiate a LinkedList   
        List src_l = new LinkedList();
        List dest_l = new LinkedList();

        // By using add() method is to
        // add elements in linked list src_l
        src_l.add(10);
        src_l.add(20);
        src_l.add(30);
        src_l.add(40);
        src_l.add(50);

        // By using add() method is to
        // add elements in linked list dest_l
        dest_l.add(40);
        dest_l.add(50);

        // Display LinkedList
        System.out.println("link_l: " + src_l);
        System.out.println("dest_l: " + dest_l);

        System.out.println();

        // By using lastIndexOfSubList() method is to
        // return the starting index of last occurrence
        // of dest_l in src_l
        int index = Collections.lastIndexOfSubList(src_l, dest_l);

        //Display index
        System.out.println("Collections.lastIndexOfSubList(src_l,dest_l): " + index);
    }
}

Output

link_l: [10, 20, 30, 40, 50]
dest_l: [40, 50]

Collections.lastIndexOfSubList(src_l,dest_l): 3

Comments and Discussions!

Load comments ↻

Top MCQs

Top Programs/Examples