Topic: jbuilder中怎么判断一个文本框中输入的数字还是字母啊?

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1.jbuilder中怎么判断一个文本框中输入的数字还是字母啊? Copy to clipboard
Posted by: lixaohan
Posted on: 2005-09-26 10:39

jbuilder中怎么判断一个文本框中输入的数字还是字母啊?
谁能告诉我啊。谢谢了

2.Re:jbuilder中怎么判断一个文本框中输入的数字还是字母啊? [Re: lixaohan] Copy to clipboard
Posted by: anbothwell
Posted on: 2005-09-27 18:57

接受得到的只是字符,需要转换才可以得到数字。

3.Re:jbuilder中怎么判断一个文本框中输入的数字还是字母啊? [Re: lixaohan] Copy to clipboard
Posted by: gsl9322
Posted on: 2005-09-28 23:37

用下面这个类就可以了
public Character(char value)
Constructs a newly allocated Character object that represents the specified char value.
static boolean isDigit(char ch)
Determines if the specified character is a digit.
static boolean isLetter(char ch)
Determines if the specified character is a letter.


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