Question

How to convert set to string in Java

Answer 1

import java.util.Arrays; 
import java.util.Set; 
import java.util.HashSet; 
import java.util.stream.Collectors;
 
public class ConvertSetToString_Java {
    public static void main(String args[]) {
        Integer arr[] = {5, 2, 1, 3, 7, 8, 6, 0};
         
        Set<Integer> set = new HashSet(Arrays.asList(arr));
        
        String str = set.stream().map(String::valueOf).collect(Collectors.joining(" "));
         
        System.out.println(str);
    }
}
   
   
   
   
/*
run:
   
0 1 2 3 5 6 7 8
   
*/

 

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Answer 2

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

public class ConvertSetToString_Java {
    public static void main(String args[]) {
        Integer arr[] = {5, 2, 1, 3, 7, 8, 6, 0};
         
        Set<Integer> set = new HashSet(Arrays.asList(arr));
        
        String str = set.toString();
         
        System.out.println(str);
    }
}

   
   
   
/*
run:
   
[0, 1, 2, 3, 5, 6, 7, 8]
   
*/

 

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