AbstractSequentialList equals() method in Java with Example

Last Updated : 24 Dec, 2018

The equals() method of java.util.AbstractSequentialList class is used to check if this AbstractSequentialList object is equal to the object passed as the parameter. This method returns a boolean value stating the same.

Syntax:

public boolean equals(Object o)

Parameters: This method takes the object o as a parameter to be compared for equality with this list.

Returns Value: This method returns true if the specified object is equal to this list.

Below are the examples to illustrate the equals() method.

Example 1:

// Java program to demonstrate equals()
// method of AbstractSequentialList
  
import java.util.*;
  
public class GFG {
    public static void main(String[] argv)
    {
  
        // Creating object of AbstractSequentialList<String>
        AbstractSequentialList<String>
            arrlist1 = new LinkedList<String>();
  
        // Populating arrlist1
        arrlist1.add("A");
        arrlist1.add("B");
        arrlist1.add("C");
        arrlist1.add("D");
        arrlist1.add("E");
  
        // print arrlist1
        System.out.println("First AbstractSequentialListlist: "
                           + arrlist1);
  
        // Creating another object of AbstractSequentialList<String>
        AbstractSequentialList<String>
            arrlist2 = new LinkedList<String>();
  
        // Populating arrlist2
        arrlist2.add("A");
        arrlist2.add("B");
        arrlist2.add("C");
        arrlist2.add("D");
        arrlist2.add("E");
  
        // print arrlist2
        System.out.println("Second AbstractSequentialList: "
                           + arrlist2);
  
        // comparing first AbstractSequentialList to another
        // using equals() method
        boolean value
            = arrlist1.equals(arrlist2);
  
        // print the value
        System.out.println("Are both list equal: "
                           + value);
    }
}

Output:

First AbstractSequentialListlist: [A, B, C, D, E]
Second AbstractSequentialList: [A, B, C, D, E]
Are both list equal: true

Example 2:

// Java program to demonstrate equals()
// method of AbstractSequentialList
  
import java.util.*;
  
public class GFG1 {
    public static void main(String[] argv)
    {
  
        // Creating object of AbstractSequentialList
        AbstractSequentialList<Integer>
            arrlist1 = new LinkedList<Integer>();
  
        // Populating arrlist1
        arrlist1.add(10);
        arrlist1.add(20);
        arrlist1.add(30);
        arrlist1.add(40);
        arrlist1.add(50);
  
        // print arrlist1
        System.out.println("First AbstractSequentialListlist: "
                           + arrlist1);
  
        // Creating another object of AbstractSequentialList
        AbstractSequentialList<Integer>
            arrlist2 = new LinkedList<Integer>();
  
        // Populating arrlist2
        arrlist2.add(10);
        arrlist2.add(20);
        arrlist2.add(30);
  
        // print arrlist2
        System.out.println("Second AbstractSequentialList: "
                           + arrlist2);
  
        // comparing first AbstractSequentialList to another
        // using equals() method
        boolean value = arrlist1.equals(arrlist2);
  
        // print the value
        System.out.println("Are both list equal: "
                           + value);
    }
}

Output:

First AbstractSequentialListlist: [10, 20, 30, 40, 50]
Second AbstractSequentialList: [10, 20, 30]
Are both list equal: false

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