Java-Collection-Framework-and-Java-Set/HashSetDemo19.java at main · AvinandanBose/Java-Collection-Framework-and-Java-Set · GitHub

31 lines (24 loc) · 727 Bytes

import java.util.HashSet;

public class HashSetDemo19 {

public static void main(String[] args) {

HashSet<String> set = new HashSet<>();

set.add("A");

set.add("a");

set.add("B");

set.add("b");

System.out.println(set);

Object[] arr = set.toArray();

for (Object o : arr) {

System.out.println(o);

}

System.out.println("");

for (int j = 0; j < arr.length; j++) {

System.out.println(arr[j]);

}

System.out.println("");

String[] arr2 = set.toArray(new String[set.size()]);

for (String s : arr2) {

System.out.println(s);

}

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