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package KienTrucCollections;

import java.util.HashSet;

import java.util.Set;

public class DemoSet {

public static void main(String[] args) {

//Khai báo đối tượng thuộc kiểu HashSet trong bộ Set

Set<String> hashSet = new HashSet<String>();

//Thêm giá trị vào HashSet

hashSet.add("PHP");

hashSet.add("Python");

hashSet.add("Java");

hashSet.add("Java");

hashSet.add("C++");

System.out.println("Các phần tử của Set");

System.out.print("\t" + hashSet + "\n");

System.out.println(hashSet.size());

//Duyệt giá trị trong Collection

for (String programmingName : hashSet){

System.out.println(programmingName);

}

}

}