Question

How to create a set of objects in Java

Answer 1

import java.util.HashSet;

public class Main {
    public static void main(String[] args) {
        HashSet<String> set = new HashSet<>();
        
        // Adding elements to the set
        set.add("Apple");
        set.add("Banana");
        set.add("Strawberry");
        
        System.out.println(set);
    }
}


/*
run:

[Apple, Strawberry, Banana]

*/

 

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Answer 2

import java.util.TreeSet;

public class Main {
    public static void main(String[] args) {
        TreeSet<String> set = new TreeSet<>();
        
        // Adding elements to the set
        set.add("Apple");
        set.add("Banana");
        set.add("Strawberry");
        
        System.out.println(set);
    }
}


/*
run:

[Apple, Banana, Strawberry]

*/

 

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Answer 3

import java.util.LinkedHashSet;

public class Main {
    public static void main(String[] args) {
        LinkedHashSet<String> set = new LinkedHashSet<>();
        
        // Adding elements to the set
        set.add("Apple");
        set.add("Banana");
        set.add("Strawberry");
        
        System.out.println(set);
    }
}



/*
run:

[Apple, Banana, Strawberry]

*/

 

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