triangle.java

Java类的继承示例

public class Triangle extends Polygon
{
  public int base;
  public int height;
  public Triangle(int base,int height)
  {
    super(3);
    System.out.println("Inside Triangle constructor");
  }
  public void toString(int b,int h)
  {
    base=b;
    height=h;
    System.out.println("The triangle's base is "+base+"height is "+height);
  }
  public double getArea(int b,int h)
  {
    area=(b*h)/2;
    return area;
  }
}