萬花筒

import java.util.Scanner;

public class MaximumFinder

{

   public void determineMaximum()

   {

      Scanner input = new Scanner ( System.in );

      System.out.println("輸入四個數字");

      double number1 = input.nextDouble();

      double number2 = input.nextDouble();

      double number3 = input.nextDouble();

      double number4 = input.nextDouble();

      double result = maximum ( number1 , number2 , number3 , number4);

      System.out.printf("最大數為：" + result);

   }

   public double maximum( double a , double b , double c , double d )

   {

      double maximumValue = a ;

      if ( b > maximumValue )

         maximumValue = b ;

      if ( c > maximumValue )

         maximumValue = c ;

      if ( d > maximumValue )

         maximumValue = d ;

      return maximumValue;

   }

}