12 replies to this topic

[Paulo André]

olá,
como eu faria um laço de repetição (while) pra verificar se uma entrada no JOptionPane é um número inteiro?

em java..

Vlw...
Até mais

[Felipe Pena]

Exemplo:

   firstNumber = JOptionPane.showInputDialog("Entre com o 1° numero:");
    if (firstNumber instanceof Number) { ... }

[Paulo André]

mas se eu fizer somente isso e eu informar uma palavra ele da erro e vai embora no codigo... como eu colocaria um while caso nao for um inteiro?

e deu erro nesse if..

Inconvertilbe types

obrigado..
Até mais

Edição feita por: HellBurn, 02/03/2006, 17:01.

[MACUL]

Qualquer número divido por 1 o resto deve ser 0

if ( x % 1) == 0
{
//inteiro
}
else
{
//Não inteiro
}

EM VB

if (x mod 1) = 0 then
'inteiro
else
'não inteiro
end if

Edição feita por: MACUL, 10/02/2010, 11:19.

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