righttriangledemo.java

Java类的继承示例

public class RightTriangleDemo
{
  public static void main(String[] args)
  {
    RightTriangle r=new RightTriangle(3,4);
    r.toString(8);
    System.out.println("the area is "+r.getArea(base,height));
    System.out.println("the number of sides is "+r.getNumberOfSides());
  }
}