Question

How to create a set from an array of characters in Java

Answer 1

import java.util.ArrayList;
import java.util.HashSet;
import java.util.Arrays;
 
public class Program {
    public static void main(String[] args) {
        ArrayList<String> arr = new ArrayList<>(Arrays.asList("j", "a", "v", "a", "j", "a"));
 
        HashSet<String> st = new HashSet<>(arr);
 
        System.out.println(st);
    }
}
  
   
   
/*
run:
   
[a, v, j]
   
*/

 

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Answer 2

import java.util.ArrayList;
import java.util.HashSet;
import java.util.Arrays;
import java.util.Set;

public class Program {
    public static void main(String[] args) {
        ArrayList<String> arr = new ArrayList<>(Arrays.asList("j", "a", "v", "a", "j", "a"));

        Set<String> st = new HashSet<String>(arr);

        System.out.println(st);
    }
}
 
  
  
/*
run:
  
[a, v, j]
  
*/

 

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