如何判断输入的是不是数字呀？# Java - 爪哇娇娃
t*o
1 楼
In Java, how to validate whether the input is a number or not? Thanks.
g*g
2 楼
What kind of Number? For simple one, a try and catch
Integer/Double of parseInt/parseDouble may be enough,
for complicated one, check NumberFormat
【在 t****o 的大作中提到】
: In Java, how to validate whether the input is a number or not? Thanks.
Integer/Double of parseInt/parseDouble may be enough,
for complicated one, check NumberFormat
【在 t****o 的大作中提到】
: In Java, how to validate whether the input is a number or not? Thanks.
a*e
3 楼
boolean isDigit(char)
【在 t****o 的大作中提到】
: In Java, how to validate whether the input is a number or not? Thanks.
【在 t****o 的大作中提到】
: In Java, how to validate whether the input is a number or not? Thanks.
c*z
4 楼
use regular expression
【在 t****o 的大作中提到】
: In Java, how to validate whether the input is a number or not? Thanks.
【在 t****o 的大作中提到】
: In Java, how to validate whether the input is a number or not? Thanks.
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