?? circledemo3.java
字號:
class Circle {
final static double PI=3.14;
private double dbRadius=1;
public Circle(double dbRadius){
this.dbRadius=dbRadius;
}
public double Area(){
double area;
area=PI*dbRadius*dbRadius;
return area;
}
}
public class CircleDemo3{
public static void main(String[] args) {
Circle[] circleArray;
double dbSumArea=0.0;//保存圓面積的總面積
circleArray = new Circle[5];
for (int i = 1; i <= 5; i++) {
circleArray[i-1] = new Circle(i);
}
for (int i=0;i<circleArray.length;i++) {
System.out.println(circleArray[i].Area());
dbSumArea += circleArray[i].Area();
}
System.out.println("總面積為:" + dbSumArea);
}
}
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -