Help with scanner method

[kormath]

To start off, I'm trying to write a simple java program to catch the keyboard input and display a result for a school assignment. I know, I say school and everyone thinks I want them to write the program for me. Not the case here, I have the program written, but i'm getting an error I don't know how to fix.

I'm using NetBeans IDE 7.2.1 creating a java project to calculate the annual commission of a salesman.

I tried using some examples from the college text, the lines I wrote read:

//Scanner used to catch keyboard input
Scanner keyboard = new Scanner(System.in);

When i did that NetBeans made another class called scanner.java and when I test the program i get this error:
run:
What are the total sales?
Exception in thread "main" java.lang.UnsupportedOperationException: Not yet implemented
at comp.Scanner.nextDouble(Scanner.java:19)
at comp.comp.main(comp.java:27)
Java Result: 1
BUILD SUCCESSFUL (total time: 0 seconds)

Scanner.java line 19 reads - throw new UnsupportedOperationException("Not yet implemented"); and I don't know why that was created.
comp.java line 27 reads - sales = keybaord.nextDouble ();

Here is the comp.java program:

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package comp;

/**
 *
 * @author Tracy
 */
public class comp {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here

   double sales; //To hold the sales numbers
   double salary = 60000;
   double commission = 0.025;
   
   //Scanner object catches keyboard input
   Scanner keyboard = new Scanner(System.in);
   
   //Get the sales numbers
   System.out.println("What are the total sales? ");
   sales = keyboard.nextDouble ();
   
   //Equation for the annual commission is 60k + .025 x S (where S = Sales).
   double result = salary + (commission * sales);
   
   //Display shown for annual commission
   System.out.println("The annual commision for the salesman is " + Double.toString(result)); 
        }
}

And the scanner.java that NetBeans created:

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package comp;

import java.io.InputStream;

/**
 *
 * @author Tracy
 */
class Scanner {

    public Scanner(InputStream in) {
    }

    double nextDouble() {
        throw new UnsupportedOperationException("Not yet implemented");
    }
    
}

Any help would be appreciated.

[Fubarable]

NetBeans only made the Scanner class when you told it to. It in fact told you that it could not find Scanner because you didn't provide an import statement to the core Java class, java.util.Scanner. Since it could not tell what class you meant, it suggested creating a new class called Scanner, but that's the wrong way to go about solving this. Delete that class and all traces of it, and instead add the critical import to your original program so that you can use the core class.

[wfsteadman]

I agree with Fubarable. In the examples you looked at, look near the top of the code and you might see some of the imports he speaks of. Remember you are using a Class that was created by Java already so you have to get it into the application you are building, hence the import.

Happy Coding
Wally

[kormath]

I agree with Fubarable. In the examples you looked at, look near the top of the code and you might see some of the imports he speaks of. Remember you are using a Class that was created by Java already so you have to get it into the application you are building, hence the import.

Happy Coding
Wally

Thanks guys, I'll go back to the books and see if i can find more references to this scanner class.

Is there an easier way to capture the keyboard input and use it in the equation to produce the desired results?

[Fubarable]

I think that Scanner is about as easy as they come.