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HashSet equals() Definition with example

What is the output of the following code:

import java.util.HashSet;
import java.util.Set;
public class HashSetEquals
{   
    public static void main(String str[]) throws Exception {
        Set nameSet = new HashSet<>() ;
        nameSet.add("USA") ;
        nameSet.add("Canada") ;
        Set cntrySet = new HashSet<>() ;
        cntrySet.add("USA") ;
        cntrySet.add("Canada") ;
        System.out.println(cntrySet.equals(nameSet)) ;
    }
}

Answer:   true.

import java.util.HashSet;
import java.util.Set;
public class HashSetEquals
{   
    public static void main(String str[]) throws Exception {
        Set nameSet = new HashSet<>() ;
        nameSet.add("USA") ;
        nameSet.add("Canada") ;
        nameSet.add("Brazil") ;
        Set cntrySet = new HashSet<>() ;
        cntrySet.add("USA") ;
        cntrySet.add("Canada") ;
        System.out.println(cntrySet.equals(nameSet)) ;
    }
}

Answer:   false.

import java.util.HashSet;
import java.util.Set;
public class HashSetEquals
{   
    public static void main(String str[]) throws Exception {
        Set nameSet = new HashSet<>() ;
        nameSet.add("USA") ;
        nameSet.add("Canada") ;
        nameSet.add("Canada") ;
        Set cntrySet = new HashSet<>() ;
        cntrySet.add("USA") ;
        cntrySet.add("Canada") ;
        System.out.println(cntrySet.equals(nameSet)) ;
    }
}

Answer:   true

The equals method for HashSet compares the specified object with this set for equality. Returns true if the specified object is also a set, the two sets have the same size, and every member of the specified set is contained in this set (or equivalently, every member of this set is contained in the specified set).

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