Formatos

Lección

Primer contacto con Java

Ejercicio

Objetivo

Escriba un programa en java para pedir al usuario un número y muestre ir cuatro veces seguidas, separadas con espacios en blanco y, a continuación, cuatro veces en la fila siguiente, sin separación. Debe hacerlo dos veces: primero usando Console.Write y luego usando {0}.

Código de Ejemplo

Mostrar Código

// Importing the Scanner class to handle input from the useimport java.util.Scanner;  // Import Scanner class for input

public class Program {
    // Main entry point of the program
    public static void main(String[] args) {
        // Create a scanner object to read user input
        Scanner scanner = new Scanner(System.in);

// Ask the user to input a number
        System.out.print("Enter a number: ");
        // Read the user's input as an integer
        int number = scanner.nextInt();

// Print the number four times in a row, separated by spaces using System.out.print
        System.out.print(number + " " + number + " " + number + " " + number);
        System.out.println();  // Move to the next line

// Print the number four times in a row, without any separation using System.out.print
        System.out.print(Integer.toString(number) + Integer.toString(number) + Integer.toString(number) + Integer.toString(number));
        System.out.println();  // Move to the next line

// Print the number four times in a row, separated by spaces using String.format
        System.out.println(String.format("%d %d %d %d", number, number, number, number));

// Print the number four times in a row, without any separation using String.format
        System.out.println(String.format("%d%d%d%d", number, number, number, number));

// Close the scanner to free up resources
        scanner.close();
    }
}

// Importing the Scanner class to handle input from the useimport java.util.Scanner;  // Import Scanner class for input

public class Program {
    // Main entry point of the program
    public static void main(String[] args) {
        // Create a scanner object to read user input
        Scanner scanner = new Scanner(System.in);

        // Ask the user to input a number
        System.out.print("Enter a number: ");
        // Read the user's input as an integer
        int number = scanner.nextInt();

        // Print the number four times in a row, separated by spaces using System.out.print
        System.out.print(number + " " + number + " " + number + " " + number);
        System.out.println();  // Move to the next line

        // Print the number four times in a row, without any separation using System.out.print
        System.out.print(Integer.toString(number) + Integer.toString(number) + Integer.toString(number) + Integer.toString(number));
        System.out.println();  // Move to the next line

        // Print the number four times in a row, separated by spaces using String.format
        System.out.println(String.format("%d %d %d %d", number, number, number, number));

        // Print the number four times in a row, without any separation using String.format
        System.out.println(String.format("%d%d%d%d", number, number, number, number));

        // Close the scanner to free up resources
        scanner.close();
    }
}