Newbie help Temperature converter

Question

I hva a proble with this, when I complie and then execute the file, DOS comes up (which is what I want for now) but I can't enter a number . this is what is tells me when I execute the file.
//DOS output: "Centigrade equivalent =37.0
press any key to continue..."
This is the source:
class FahrenheitToCentigrade
     double ConvertTemp ( double fahrenheit )
          double centigrade =  (double) 5/9 * ( fahrenheit - 32 );
                                 // typecast to double..why ?
          return centigrade;
     public static void main ( String[] args)
        FahrenheitToCentigrade x = new FahrenheitToCentigrade();
        double p = x.ConvertTemp(98.6 );
        System.out.println("Centigrade equivalent = " + p);
} // end of class FahrenheitToCentigrade

Answer 1

if you want to input a number then you can convert your existing main() to this:
import java.io.*;   //<<--- DONT FORGET TO ADD THIS!
public static void main ( String[] args){
      try{
        FahrenheitToCentigrade x = new FahrenheitToCentigrade();
           DataInputStream in = new DataInputStream(System.in); // add this....
            System.out.print("Enter temperature: ");
        double p = x.ConvertTemp(Double.parseDouble(args[0]) );  // then this.....
        System.out.println("Centigrade equivalent = " + p);
       catch(Exception e){}
}