juangonza

/**
 *
 * @author saul aponte
 */
package calc;

import java.io.*;
public class Leer {
    public static String dato(){
        String sdato = "";
        try {
            InputStreamReader isr = new InputStreamReader(System.in);
            BufferedReader flujoE = new BufferedReader(isr);
            sdato = flujoE.readLine();
        }
        catch (IOException e){
            System.err.println("Error: " + e.getMessage());
        }
        return sdato;
    }

    public static short datoShort(){
        try {
            return Short.parseShort(dato());
        }
        catch (NumberFormatException e){
            return Short.MIN_VALUE;
        }
    }

    public static int datoInt(){
        try {
            return Integer.parseInt(dato());
        }
        catch (NumberFormatException e){
            return Integer.MIN_VALUE;
        }
    }

    public static long datoLong(){
        try {
            return Long.parseLong(dato());
        }
        catch (NumberFormatException e){
            return Long.MIN_VALUE;
        }
    }

    public static float datoFloat(){
        try {
            Float f = new Float(dato());
            return f.floatValue();
        }
        catch (NumberFormatException e){
            return Float.NaN;
        }
    }

    public static double datoDouble(){
        try {
            Double d = new Double(dato());
            return d.doubleValue();
        }
        catch (NumberFormatException e){
            return Double.NaN;
        }
    }
}