求一个判断金额的正则

[mynameisdoudou]

例如0.0,0.00000的判断

[花谢尊前不敢香]

没明白什么意思。

[tianma630]

String reg1 = "^[0-9]*\\.[0-9]*$";
System.out.println("0.0".matches(reg1));

[那些年一起放的鸽子]

String reg = "^[+\\-]?\\d+(\\.\\d+)?$";
System.out.println("55".matches(reg));
System.out.println("55.00".matches(reg));
System.out.println("-55.00".matches(reg));