// Fig. 6.3: MaximumFinder.java
// Programmer-declared method maximum with three double parameters.
import java.util.Scanner;

public class MaximumFinder 
{
   // obtain three floating-point values and determine maximum value
   public void determineMaximum()
   {
      // create Scanner for input from command window
      Scanner input = new Scanner( System.in );

      // prompt for and input three floating-point values
      System.out.print( 
         "Enter three floating-point values separated by spaces: " );
      double number1 = input.nextDouble(); // read first double
      double number2 = input.nextDouble(); // read second double
      double number3 = input.nextDouble(); // read third double

      // determine the maximum value
      double result = maximum( number1, number2, number3 ); 

      // display maximum value 
      System.out.println( "Maximum is: " + result ); 
   } // end method determineMaximum

   // returns the maximum of its three double parameters
   public double maximum( double x, double y, double z )
   {
      double maximumValue = x; // assume x is the largest to start

      // determine whether y is greater than maximumValue
      if ( y > maximumValue )
         maximumValue = y; 

      // determine whether z is greater than maximumValue
      if ( z > maximumValue )
         maximumValue = z;

      return maximumValue;
   } // end method maximum
} // end class MaximumFinder

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