How do i view this type of application?

Question

I copied this example code from a book, but i dont know how to view it as a running program:
public class PondVolume {
     public static void main(String[] args) {
          if (args.length != 3) {
          System.out.println("Usage: java Pondvolume Length Width Depth");
          System.exit(0);
     float length = Float.valueOf(args[0]).floatValue();
     float width = Float.valueOf(args[1]).floatValue();
     float depth = Float.valueOf(args[2]).floatValue();
     float volume = length * width * depth * 7.5f;
     System.out.println("Pond length = " + length + " feet");
     System.out.println("Pond width = " + width + " feet");
     System.out.println("Pond depth = " + depth + " feet");
     System.out.println("Pond volume = " + volume + " gallons");
is there anything wrong with this code, and how should i run it?
Thanks

Answer 1

At the command prompt you type "javac PondVolume.java" to compile and then to run type "java PondVolume x y z" where x is the length of your pond, y is the width, and z is the depth. The program will print the results to the screen.
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