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Showing content from https://www.geeksforgeeks.org/java/abstractsequentiallist-set-method-in-java-with-examples/ below:

AbstractSequentialList set() method in Java with Examples

Last Updated : 30 Oct, 2018

The

set()

method of

Java.util.AbstractSequentialList

is used to replace any particular element in the sequential list created using the LinkedList class with another element. This can be done by specifying the position of the element to be replaced and the new element in the parameter of the set() method.

Syntax:

AbstractSequentialList.set(int index, Object element)

Parameters:

This function accepts two parameters as shown in the above syntax and described below.

index: This is of integer type and refers to the position of the element that is to be replaced from the list.
element: It is the new element by which the existing element will be replaced and is of the same object type as the sequential list.

Return Value:

The method returns the previous value from the sequential list that is replaced with the new value. Below programs illustrate the Java.util.AbstractSequentialList.set() method:

Example 1: Java


 // Java code to illustrate set()

import java.util.*;
import java.util.AbstractSequentialList;

public class AbstractSequentialListDemo {
    public static void main(String args[])
    {
        // Creating an empty AbstractSequentialList
        AbstractSequentialList<String>
            absqlist = new LinkedList<String>();

        // Use add() method to add elements in the list
        absqlist.add("Geeks");
        absqlist.add("for");
        absqlist.add("Geeks");
        absqlist.add("10");
        absqlist.add("20");

        // Displaying the AbstractSequentialList
        System.out.println("AbstractSequentialList:"
                           + absqlist);

        // Using set() method to replace Geeks with GFG
        System.out.println("The Object that is replaced is: "
                           + absqlist.set(2, "GFG"));

        // Using set() method to replace 20 with 50
        System.out.println("The Object that is replaced is: "
                           + absqlist.set(4, "50"));

        // Displaying the modified linkedlist
        System.out.println("The new List is:" + absqlist);
    }
}

Output:

AbstractSequentialList:[Geeks, for, Geeks, 10, 20]
The Object that is replaced is: Geeks
The Object that is replaced is: 20
The new List is:[Geeks, for, GFG, 10, 50]

Example 2: Java


 // Java code to illustrate set()

import java.util.*;
import java.util.AbstractSequentialList;

public class AbstractSequentialListDemo {
    public static void main(String args[])
    {

        // Creating an empty AbstractSequentialList
        AbstractSequentialList<Integer>
            absqlist = new LinkedList<Integer>();

        // Use add() method to add elements in the list
        absqlist.add(50);
        absqlist.add(40);
        absqlist.add(30);
        absqlist.add(20);
        absqlist.add(10);

        // Displaying the AbstractSequentialList
        System.out.println("AbstractSequentialList:"
                           + absqlist);

        // Using set() method to replace 40 with 400
        System.out.println("The Object that is replaced is: "
                           + absqlist.set(1, 400));

        // Using set() method to replace 10 with 100
        System.out.println("The Object that is replaced is: "
                           + absqlist.set(4, 100));

        // Displaying the modified linkedlist
        System.out.println("The new List is:" + absqlist);
    }
}

Output:

AbstractSequentialList:[50, 40, 30, 20, 10]
The Object that is replaced is: 40
The Object that is replaced is: 10
The new List is:[50, 400, 30, 20, 100]

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