squareproperties.java

Java程序设计技巧与开发实例附书源代码。

public class SquareProperties
{  public static double computeArea (double side)
   {  return side * side; }
   public static double computePerimeter(double side)
   {  return 4.0 * side;  }
   public static void main(String args[])
   {  double side = 10.0;
      double area = computeArea(side);
      double perim = computePerimeter(side);
      System.out.println("Side: " + side);
      System.out.println("Area: " + area);
      System.out.println("Perimeter: " + perim);
   }
}