Equals(Object) Method which is inherited from the Object class is used to check whether the specified ArrayList object is equal to another ArrayList object or not.
Syntax:
public virtual bool Equals (object obj);
Here, obj is the object which is to be compared with the current object.
Return Value: This method return true if the specified object is equal to the current object otherwise, false.
Below programs illustrate the use of above-discussed method:
Example 1:
// C# program to if a ArrayList // is equal to itself or not using System;
using System.Collections;
class Geeks {
// Main Method
public static void Main(String[] args)
{
// Creating a ArrayList
ArrayList arrlist = new ArrayList();
// Adding elements to ArrayList
arrlist.Add(1);
arrlist.Add(2);
arrlist.Add(3);
arrlist.Add(4);
arrlist.Add(5);
// Checking whether arrlistis
// equal to itself or not
Console.WriteLine(arrlist.Equals(arrlist));
}
} |
True
Example 2: The equals method only check if both ArrayList references refer to same object or not. It returns false if two objects are different, even if they have same values.
// C# program to if a ArrayList // is equal to another ArrayList using System;
using System.Collections;
class Geeks {
// Main Method
public static void Main(String[] args)
{
// Creating a ArrayList
ArrayList arrlist = new ArrayList();
// Adding elements to ArrayList
arrlist.Add( "This" );
arrlist.Add( "is" );
arrlist.Add( "C#" );
arrlist.Add( "ArrayList" );
arrlist.Add( "Tutorial." );
// Creating an ArrayList
ArrayList arrlist2 = new ArrayList();
// Adding elements to ArrayList
arrlist2.Add( "This" );
arrlist2.Add( "is" );
arrlist2.Add( "C#" );
arrlist2.Add( "ArrayList" );
arrlist2.Add( "Tutorial." );
// Checking whether arrlist is
// equal to arrlist2 or not
Console.WriteLine(arrlist.Equals(arrlist2));
// Creating a ArrayList
ArrayList arrlist3 = new ArrayList();
// Assigning arrlist2 to arrlist3
arrlist3 = arrlist2;
// Checking whether arrlist3 is
// equal to arrlist2 or not
Console.WriteLine(arrlist3.Equals(arrlist2));
}
} |
False True
Note: If the current instance is a reference type, the Equals(Object) method checks for reference equality.