package tom.jiafei;
class Lader{
double upbottom,lobottom,height;
Lader(double a,double b,double c){
upbottom=a;
lobottom=b;
height=c;}
public double f(){
return (upbottom+lobottom)*height/2;}}
class Circle{
double radiues;
Circle(double a){
radiues=a;}
public double getArae(){
return 3.14*radiues*radiues;}
public double getLenght(){
return 3.14*2*radiues;}}
import tom.jiafei.*;
public class getLaderAndCircle{
public static void main(String args[]){
Lader l=new Lader(3,5,6);
Circle c=new Circle(3.5);
System.out.printf("圆的面积为%f",c.getArae());
System.out.printf("圆的周长为%f",c.getLenght());
System.out.printf("梯形的面积为%f",l.f());}}
这些函数都忘记加上public了
另外还有,你的英语太差了,length、area都拼写错了
http://blog.csdn.net/com_stu_zhang/article/details/25112591
个人认为跟你的包有关系。
报错的地方没错,,这样输出可以的,,,,,新手起始用集成开发工具好点,,,cmd这种,是装逼用的( ▼-▼ )
System.out.printf("圆的面积为%f",c.getArae());
System.out.printf("圆的周长为%f",c.getLenght());
System.out.printf("梯形的面积为%f",l.f());}}
【追加】
【追加】,,上面那张忽略,,,( ▼-▼ )
整个eclipse吧,对自己好点,问题也好定位