Signos del zodiaco, java.

import java.util.Scanner;

public class signos {
public static void main (String args[]){
int a,b;
System.out.println("Ingrese el día y el mes de su nacimiento");
System.out.print("Dia = ");
Scanner dia= new Scanner(System.in);
a= dia.nextInt();
System.out.print("Mes = ");
Scanner mes= new Scanner(System.in);
b= mes.nextInt();
if (a>=22&&b==12){
System.out.println("Su signo es capricornio");}
if (a<20&&b==1){
System.out.println("Su signo es capricornio");}
if (a>=21&&b==1){
System.out.println("Su signo es acuario");}
if (a<=20&&b==2){
System.out.println("Su signo es acuario");}
if (a>=21&&b==2){
System.out.println("Su signo es piscis");}
if (a<=20&&b==3){
System.out.println("Su signo es piscis");}
if (a>=21&&b==3){
System.out.println("Su signo es aries");}
if (a<=19&&b==4){
System.out.println("Su signo es aries");}
if (a>=20&&b==4){
System.out.println("Su signo es tauro");}
if (a<=20&&b==5){
System.out.println("Su signo es tauro");}
if (a>=21&&b==5){
System.out.println("Su signo es geminis");}
if (a<=21&&b==6){
System.out.println("Su signo es geminis");}
if (a>=22&&b==6){
System.out.println("Su signo es cancer");}
if (a<=21&&b==7){
System.out.println("Su signo es cancer");}
if (a>=22&&b==7){
System.out.println("Su signo es leo");}
if (a<=21&&b==8){
System.out.println("Su signo es leo");}
if (a>=22&&b==8){
System.out.println("Su signo es Virgo");}
if (a<=22&&b==9){
System.out.println("Su signo es Virgo");}
if (a>=23&&b==9){
System.out.println("Su signo es Libra");}
if (a<=21&&b==10){
System.out.println("Su signo es Libra");}
if (a>=22&&b==10){
System.out.println("Su signo es Escorpio");}
if (a<=21&&b==11){
System.out.println("Su signo es Escorpio");}
if (a>=22&&b==11){
System.out.println("Su signo es Sagitario");}
if (a<=21&&b==12){
System.out.println("Su signo es Sagitario");}

}
}