利用Java bean 求梯形面积，梯形上下底和高由表单输入。

public class Trapezoidal {

private float top;
private float bottom;
private float height;
private float area;
public float getTop() {
return top;
}
public void setTop(float top) {
this.top = top;
}
public float getBottom() {
return bottom;
}
public void setBottom(float bottom) {
this.bottom = bottom;
}
public float getHeight() {
return height;
}
public void setHeight(float height) {
this.height = height;
}
public float getArea(){
this.area=((getTop()+getBottom())*getHeight())/2;
return area;
}
}

java bean 很好写的啊

梯形表单，也很好写的啊，

return area=(a+b)*h/2 按照这个公式写吧，相信有点基础都能写得出来。加油