输入值转为double型 下面是JDK中的原文 parseDouble public static double parseDouble(String s) throws NumberFormatExceptionReturns a new double initialized to the value represented by the specified String, as performed by the valueOf method of class Double. Parameters: s - the string to be parsed. Returns: the double value represented by the string argument. Throws: NumberFormatException - if the string does not contain a parsable double. Since: 1.2
下面是JDK中的原文
parseDouble
public static double parseDouble(String s)
throws NumberFormatExceptionReturns a new double initialized to the value represented by the specified String, as performed by the valueOf method of class Double. Parameters:
s - the string to be parsed.
Returns:
the double value represented by the string argument.
Throws:
NumberFormatException - if the string does not contain a parsable double.
Since:
1.2