解析字符串以浮动

public class ValueOfDemo {

    public static void main(String[] args) {
    /*
    N o w  J a v a  .   c o m
    */


        // this program requires two 

        // arguments on the command line 

        if (args.length == 2) {

            // convert strings to numbers

            float a = (Float.valueOf(args[0])).floatValue();

            float b = (Float.valueOf(args[1])).floatValue();


            // do some arithmetic

            System.out.println("a + b = " + (a + b));
            /**
             * 时 代      J a v a   公   众 号 - nowjava.com 提 供 
            **/

            System.out.println("a - b = " + (a - b));

            System.out.println("a * b = " + (a * b));

            System.out.println("a / b = " + (a / b));

            System.out.println("a % b = " + (a % b));

        } else {

            System.out.println("This program "

                    + "requires two command-line arguments.");

        }

    }

}