Question

How to convert set of Strings to set of Integers in Java

Answer 1

import java.util.*; 
import java.util.stream.*; 

public class MyClass {
    public static void main(String args[]) {
        Set<String> sets = new HashSet<>(Arrays.asList("1", "2", "3", "4", "5", "6")); 

        Set<Integer> seti = sets.stream().map(s -> Integer.parseInt(s)) 
                                         .collect(Collectors.toSet()); 
  
        System.out.println(seti); 
    }
}



/*
run:

[1, 2, 3, 4, 5, 6]

*/

 

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