The equals() method of java.util.LinkedHashSet class is used to compare the specified object with this set for equality. Returns true if and only if the specified object is also a set, both sets have the same size, and all corresponding pairs of elements in the two sets are equal. (Two elements e1 and e2 are equal if (e1==null ? e2==null : e1.equals(e2)).) In other words, two sets are defined to be equal if they contain the same elements in any order.Â
Syntax:
public boolean equals(Object o)
Parameters: This method takes the object o as a parameter to be compared for equality with this set.Â
Returns Value: This method returns true if the specified object is equal to this set. Below are examples to illustrate the equals() method.
Example 1:Â
Java
// Java program to demonstrate equals()// method of LinkedHashSetÂ
import java.util.*;Â
public class GFG {Â Â Â Â public static void main(String[] argv)Â Â Â Â {Â
        // Creating object of LinkedHashSet<String>        LinkedHashSet<String> set1            = new LinkedHashSet<String>();Â
        // Populating set1        set1.add("A");        set1.add("B");        set1.add("C");        set1.add("D");        set1.add("E");Â
        // print set1        System.out.println("First LinkedHashSet: " + set1);Â
        // Creating another object of LinkedHashSet<String>        LinkedHashSet<String> set2            = new LinkedHashSet<String>();Â
        // Populating set2        set2.add("A");        set2.add("B");        set2.add("C");        set2.add("D");        set2.add("E");Â
        // print set2        System.out.println("Second LinkedHashSet: " + set2);Â
        // comparing first LinkedHashSet to another        // using equals() method        boolean value = set1.equals(set2);Â
        // print the value        System.out.println("Are both set equal: " + value);    }} |
Output:
First LinkedHashSet: [A, B, C, D, E] Second LinkedHashSet: [A, B, C, D, E] Are both set equal: true
Example 2:Â
Java
// Java program to demonstrate equals()// method of LinkedHashSetÂ
import java.util.*;Â
public class GFG1 {Â Â Â Â public static void main(String[] argv)Â Â Â Â {Â
        // Creating object of LinkedHashSet        LinkedHashSet<Integer>            set1 = new LinkedHashSet<Integer>();Â
        // Populating set1        set1.add(10);        set1.add(20);        set1.add(30);        set1.add(40);        set1.add(50);Â
        // print set1        System.out.println("First LinkedHashSet: "                           + set1);Â
        // Creating another object of LinkedHashSet        LinkedHashSet<Integer>            set2 = new LinkedHashSet<Integer>();Â
        // Populating set2        set2.add(10);        set2.add(20);        set2.add(30);Â
        // print set2        System.out.println("Second LinkedHashSet: "                           + set2);Â
        // comparing first LinkedHashSet to another        // using equals() method        boolean value = set1.equals(set2);Â
        // print the value        System.out.println("Are both set equal: "                           + value);    }} |
Output:
First LinkedHashSet: [10, 20, 30, 40, 50] Second LinkedHashSet: [10, 20, 30] Are both set equal: false
