class Main
{
  public static void main (String[] args) throws java.lang.Exception
  {
        java.io.BufferedReader r = new java.io.BufferedReader(new java.io.InputStreamReader(System.in));
        System.out.println("Ingrese un numero...");
        String s = r.readLine();
        int numero = Integer.parseInt(s);
        if (numero < 0) {
            numero = Math.abs(numero);
        }
        System.out.println("el valor absoluto de " + s + " es " + numero);
  }
}

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LTU=

-5