// Fig. 22.20: Generator.java
// Web service that generates random equations
package com.deitel.jhtp7.ch28.equationgenerator;

import java.util.Random;
import javax.jws.WebService;
import javax.jws.WebMethod;
import javax.jws.WebParam;

@WebService( name = "EquationGenerator", 
   serviceName = "EquationGeneratorService" )
public class EquationGenerator
{ 
   private int minimum;
   private int maximum;
   
   // generates a math equation and returns it as an Equation object
   @WebMethod( operationName = "generateEquation" )
   public Equation generateEquation( 
      @WebParam( name = "operation" ) String operation, 
      @WebParam( name = "difficulty" ) int difficulty )
   {
      minimum = ( int ) Math.pow( 10, difficulty - 1 );
      maximum = ( int ) Math.pow( 10, difficulty );
      
      Random randomObject = new Random();
      
      return new Equation(
         randomObject.nextInt( maximum - minimum ) + minimum,
         randomObject.nextInt( maximum - minimum ) + minimum, operation );
   } // end method generateEquation
} // end class EquationGenerator

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 * (C) Copyright 1992-2007 by Deitel & Associates, Inc. and               *
 * Pearson Education, Inc. All Rights Reserved.                           *
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 * development, research, and testing of the theories and programs        *
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