Question

How to convert ArrayList to Set in Java

Answer 1

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

public class MyClass {
    public static void main(String args[]) {
        ArrayList<Integer> al = new ArrayList<Integer>(Arrays.asList(5, 2, 9, 7, 5, 1)); 
 
        Set<Integer> set = new HashSet<Integer>(al);
        
        
        for (Integer item : set){
        	System.out.println(item);
        }
    }
}
  
  
  
  
/*
run:
  
1
2
5
7
9

*/

 

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