交互式Java程序

Question

    double hourlyrateofpay ;
   int numberofhoursworked ;
   double moneymade = hourlyrateofpay * numberofhoursworked;

   JOptionPane.showInputDialog("Enter your hourly rate of pay");
   JOptionPane.showInputDialog("Enter number of hours worked");
   JOptionPane.showInputDialog("You worked \t" + numberofhoursworked + "\t"                         
  + "hours" +"with an hourly rate of pay \t" + hourlyrateofpay + " and    
   made\t" + moneymade);

这个代码有什么问题^^^^^^^^^^^^

Answer 1

忽略从JOptionPane调用返回的结果。将这些结果放入变量中

注

JOptionPane.showInputDialog("Enter Foo");

但是

String foo = JOptionPane.showInputDialog("Enter Foo");

或

String foo = JOptionPane.showInputDialog("Enter some int");
int someInt = Integer.parseInt(foo);

您似乎还试图在获取用户输入之前进行计算。直觉上你不应该这么认为，对吧