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Copy pathSet.java
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67 lines (44 loc) · 1.45 KB
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import java.util.HashSet;
public class Set {
public static void main(String[] args) {
// Declaracion y creación
HashSet<String> names = new HashSet<>();
var numbers = new HashSet<Integer>();
// Tamaño
System.out.println(names.size());
// Añadir elementos
names.add("Hector");
names.add("Fabio");
names.add("hfvaron");
System.out.println(names.size());
System.out.println(names);
numbers.add(1);
numbers.add(2);
numbers.add(4);
// Eliminar elementos
names.remove("Fabio");
System.out.println(names.size());
// Buscar elementos
System.out.println(names.contains("Brais"));
System.out.println(names.contains("Hector"));
System.out.println(names);
names.add("Hector");
names.add("Hector");
names.add("Hector");
// Conjuntos
// names.addAll(numbers); Error
// Acceder a los elementos
var countries = new HashSet<String>();
countries.add("Colombia");
countries.add("Venezuela");
countries.add("Ecuador");
countries.add("hfvaron");
names.addAll(countries);
System.out.println(names);
// names.removeAll(countries);
System.out.println(names);
names.retainAll(countries);
System.out.println(names);
}
}