public class Converter {
private Integer counter=0;
private String value=""; 
private String nombreDeMoneda;

public Converter()
{
nombreDeMoneda = "PESOS";
} 
public String getStringOfNumber(Integer $num){
this.counter = $num;
return doThings($num);
}

public void setNombreMoneda(String nombre)
{
nombreDeMoneda = nombre;
}

/** Con formato centavos/100MN **/
public String getStringOfNumber(float $num){
// this.counter = $num; 
int _counter = (int) $num;
float resto = $num - _counter; //Almaceno la parte decimal 
//Redondeo y convierto a entero puedo tener problemas
int fraccion = Math.round(resto * 100); 

return doThings(_counter) + " " + nombreDeMoneda + " " + fraccion + "/100 MN.";
}

private String doThings(Integer _counter){
//Limite
if(_counter >2000000)
return "DOS MILLONES";

switch(_counter){
case 0: return "CERO";
case 1: return "UN"; //UNO
case 2: return "DOS";
case 3: return "TRES";
case 4: return "CUATRO";
case 5: return "CINCO"; 
case 6: return "SEIS";
case 7: return "SIETE";
case 8: return "OCHO";
case 9: return "NUEVE";
case 10: return "DIEZ";
case 11: return "ONCE"; 
case 12: return "DOCE"; 
case 13: return "TRECE";
case 14: return "CATORCE";
case 15: return "QUINCE";
case 20: return "VEINTE";
case 30: return "TREINTA";
case 40: return "CUARENTA";
case 50: return "CINCUENTA";
case 60: return "SESENTA";
case 70: return "SETENTA";
case 80: return "OCHENTA";
case 90: return "NOVENTA";
case 100: return "CIEN";

case 200: return "DOSCIENTOS";
case 300: return "TRESCIENTOS";
case 400: return "CUATROCIENTOS";
case 500: return "QUINIENTOS";
case 600: return "SEISCIENTOS";
case 700: return "SETECIENTOS";
case 800: return "OCHOCIENTOS";
case 900: return "NOVECIENTOS";

case 1000: return "MIL";

case 1000000: return "UN MILLON";
case 2000000: return "DOS MILLONES";
}
if(_counter<20){
//System.out.println(">15");
return "DIECI"+ doThings(_counter-10);
}
if(_counter<30){
//System.out.println(">20");
return "VEINTI" + doThings(_counter-20);
}
if(_counter<100){
//System.out.println("<100"); 
return doThings( (int)(_counter/10)*10 ) + " Y " + doThings(_counter%10);
} 
if(_counter<200){
//System.out.println("<200"); 
return "CIENTO " + doThings( _counter - 100 );
} 
if(_counter<1000){
//System.out.println("<1000");
return doThings( (int)(_counter/100)*100 ) + " " + doThings(_counter%100);
} 
if(_counter<2000){
//System.out.println("<2000");
return "MIL " + doThings( _counter % 1000 );
} 
if(_counter<1000000){
String var="";
//System.out.println("<1000000");
var = doThings((int)(_counter/1000)) + " MIL" ;
if(_counter % 1000!=0){
//System.out.println(var);
var += " " + doThings(_counter % 1000);
}
return var;
}
if(_counter<2000000){
return "UN MILLON " + doThings( _counter % 1000000 );
} 
return "";
} 
}