Possible Duplicate:
Limiting and formatting a JTextfield
我有一个JTextfield,用户进入“社会保障号码”。 国家安全局有9位数和2位数,共11个。
How do I limit the JTextField to 11 characters and also have 2 dashes in the textfield at the 4th and 7th position of the 11 characters?
一种想法, i 正在使用国际红十字与红新月联会的一份声明,其中表示,在确定时,必须大于或等于000001,少于或等于999999999999。 可将第0-2级职位的叙级推为可变的,而“-”则为第3-4级职位设立另一个分级,并按先前的变量计算,加上最后的“-”,然后完成投入。
is that possible? does that make logical sense?
JFormattedTextField may seem helpful, but trust me, it s not. It s overly complicated and arcane to try and properly configure.
Instead, look into extending Document. By overriding insertString, replace, and delete, you can control what characters are entered where.
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