public class Strings {

public static void main (String [] args) {

String name = "Hector";

var surname = new String("Varon");

// Operacione básicas

// Concatenación

System.out.println(name + " " + surname);

// Longitud

System.out.println(name.length());

// Obtener caracter

System.out.println(name.charAt(name.length()-1));

// Subcadena

System.out.println(name.substring(1));

System.out.println(name.substring(1, 5));

// Mayúsculas y minúsculas

System.out.println(name.toUpperCase());

System.out.println(name.toLowerCase());

// Comprobar si contiene

System.out.println("Hola, Java".contains("Hector"));

System.out.println("Hola, Java".toUpperCase().contains("AVA"));

// Comparación

System.out.println(name.equals("hector"));

System.out.println(name.equalsIgnoreCase("hector"));

// Trim

System.out.println(" Hola, me llamo hector ".trim());

//Replace

System.out.println("Hola, me llamo Fabio". replace("Fabio", "Hector"));

// Format

var age = 42;

System.out.println(String.format("Hola soy %s y tengo %d", name, age));

}

}