Clase Leer En Java

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/**
 *
 * @author saul aponte
 */
 
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;
        }
    }
}

/** * * @author saul aponte */ 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; } } }

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public class Claseleer {
 
    public static void main(String[] args) {        
        int numero;
 
        System.out.print("Ingresa el entero: ");
        numero = Leer.datoInt(); //usando el metodo de la clase leer
        System.out.println("El numero que has ingresado es:  "+numero);        
    }    
}

public class Claseleer { public static void main(String[] args) { int numero; System.out.print("Ingresa el entero: "); numero = Leer.datoInt(); //usando el metodo de la clase leer System.out.println("El numero que has ingresado es: "+numero); } }