Convert a List to a Set in Java

In order to convert a List to a Set in Java, we can create an ArrayList and pass the List as an argument in the parameterized constructor of an HashSet. This can be done as follows −

List l = new ArrayList();
Set s = new HashSet(l);

Let us see a program to convert a list to a set in Java −

Example

 Live Demo

import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import java.util.HashSet;
public class Example {
   public static void main(String[] args) {
      List l = new ArrayList();
      l.add("Good");
      l.add("Morning");
      l.add("Morning");
      Set s = new HashSet(l);
      System.out.println(s);
   }
}

Output

[Morning, Good]

Chandu yadav

Updated on 25-Jun-2020 14:44:09

• Related Questions & Answers
• Java Program to convert a List to a Set
• How to convert a Java list to a set?
• Convert a Set into a List in Java
• Can we convert a list to a Set in Java?
• Convert List to Set in Java
• Can we convert a List to Set and back in Java?
• Program to convert Set to List in Java
• Convert set into a list in Python
• What is the easiest way to convert a List to a Set in Java?
• Convert a Queue to a List in Java
• Java Program to convert a list to a read-only list
• How can we convert list to Set in Java?
• Convert an Iterator to a List in Java
• Convert a String to a List of Characters in Java
• Program to convert a Vector to List in Java