关于继承抽象父类的问题啊！！！
[code=Java][/code]
public abstract class s {
  public abstract void gets();
}
class Sanjiao extends s{
  double l,h;
  Sanjiao(double l,double h){
  this.l=l;
  this.h=h;
  }
  public void gets(){
  System.out.println(0.5*l*h);
  }
  public static void main(String[] args) {
  Sanjiao p=new Sanjiao(2.1,3.5);
  gets();//就是这一行有问题
  }  
}

------解决方案--------------------
Sanjiao p=new Sanjiao(2.1,3.5);
Sanjiao q=new Sanjiao(210,350);
p.gets();
q.gets();
这样就好理解点了吧