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

AbstractList hashCode() method in Java with Examples

Last Updated : 11 Jul, 2025

The

hashCode()

method of

java.util.AbstractList

class is used to return the hash code value for this list.

Syntax:

public int hashCode()

Returns Value:

This method returns the

hash code

value for this list. Below are the examples to illustrate the

hashCode()

method.

Example 1: Java


 // Java program to demonstrate
// hashCode() method
// for Integer value

import java.util.*;

public class GFG1 {
    public static void main(String[] argv)
        throws Exception
    {

        try {

            // Creating object of AbstractList<Integer>
            AbstractList<Integer>
                arrlist1 = new ArrayList<Integer>();

            // Populating arrlist1
            arrlist1.add(10);
            arrlist1.add(20);
            arrlist1.add(30);
            arrlist1.add(40);
            arrlist1.add(50);

            // print arrlist1
            System.out.println("ArrayListlist : " + arrlist1);

            // getting the value at the index 3
            // using get() method
            int code = arrlist1.hashCode();

            // print the value
            System.out.println("HashCode : " + code);
        }

        catch (IndexOutOfBoundsException e) {
            System.out.println("Exception thrown : " + e);
        }
    }
}

Output:

ArrayListlist : [10, 20, 30, 40, 50]
HashCode : 38490301

Example 2: Java


 // Java program to demonstrate
// hashCode() method
// for String value

import java.util.*;

public class GFG1 {
    public static void main(String[] argv)
        throws Exception
    {

        try {

            // Creating object of AbstractList<String>
            AbstractList<String>
                arrlist1 = new ArrayList<String>();

            // Populating arrlist1
            arrlist1.add("A");
            arrlist1.add("B");
            arrlist1.add("C");
            arrlist1.add("D");
            arrlist1.add("E");

            // print arrlist1
            System.out.println("ArrayListlist : "
                               + arrlist1);

            // getting the value at the index 3
            // using get() method
            int code = arrlist1.hashCode();

            // print the value
            System.out.println("HashCode : " + code);
        }

        catch (IndexOutOfBoundsException e) {
            System.out.println("Exception thrown : " + e);
        }
    }
}

Output:

ArrayListlist : [A, B, C, D, E]
HashCode : 90690786

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