if you want to do a simple, it will be like this
// 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 locate the maximum value
public static void main(String[] args)
{
// 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);
}
// returns the maximum of its three double parameters
public static 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 class MaximumFinder
and the output will be something like this
Enter three floating-point values separated by spaces: 9.35 2.74 5.1
Maximum is: 9.35
References Java™ How To Program (Early Objects), Tenth Edition