// Fig. 29.20: ValidateInput.java
// Valida informações de usuário utilizando expressões regulares.

public class ValidateInput  
{
   // valida nome
   public static boolean validateFirstName( String firstName )
   {
      return firstName.matches( "[A-Z][a-zA-Z]*" );
   } // fim do método validateFirstName

   // valida sobrenome
   public static boolean validateLastName( String lastName )
   {
      return lastName.matches( "[a-zA-z]+([ '-][a-zA-Z]+)*" );
   } // fim do método validateLastName 

   // valida endereço
   public static boolean validateAddress( String address )
   {
      return address.matches(                          
         "\\d+\\s+([a-zA-Z]+|[a-zA-Z]+\\s[a-zA-Z]+)" );
   } // fim do método validateAddress

   // valida cidade
   public static boolean validateCity( String city )
   {
      return city.matches( "([a-zA-Z]+|[a-zA-Z]+\\s[a-zA-Z]+)" );
   } // fim do método validateCity

   // valida estado
   public static boolean validateState( String state )
   {
      return state.matches( "([a-zA-Z]+|[a-zA-Z]+\\s[a-zA-Z]+)" ) ;
   } // fim do método validateState

   // valida CEP
   public static boolean validateZip( String zip )
   {
      return zip.matches( "\\d{5}" );
   } // fim do método validateZip

   // valida telefone
   public static boolean validatePhone( String phone )
   {
      return phone.matches( "[1-9]\\d{2}-[1-9]\\d{2}-\\d{4}" );
   } // fim do método validatePhone
} // fim da classe ValidateInput 


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