seahi/Java2024
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases 1 Wiki Activity

用户管理高级版

Browse Source
This commit is contained in:
seahi
2024-10-29 09:17:12 +08:00
parent 761fcb4905
commit 87f3d76415
5 changed files with 53 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/chapter4/demo45/Main.java
View File

@@ -16,7 +16,8 @@ public class Main {
case 1: // 圆形
System.out.print("请输入圆形的半径：");
double radius = sc.nextDouble();
Shape circle = new Circle(radius);
Circle circle = new Circle(radius);
// Shape circle = new Circle(radius);
ShapeCalculate.printArea(circle);
ShapeCalculate.printPerimeter(circle);
break;
@@ -24,7 +25,8 @@ public class Main {
System.out.print("请输入长方形的长和宽：");
double length = sc.nextDouble();
double width = sc.nextDouble();
Shape rectangle = new Rectangle(length, width);
// Shape rectangle = new Rectangle(length, width);
Rectangle rectangle = new Rectangle(length, width);
ShapeCalculate.printArea(rectangle);
ShapeCalculate.printPerimeter(rectangle);
break;

27
src/chapter4/demo45/ShapeCalculate.java
View File

@@ -13,12 +13,33 @@ public final class ShapeCalculate {
// 打印图形面积
public static void printArea(Shape shape) {
System.out.println("面积："+shape.getArea());
if (shape instanceof Rectangle) {
System.out.println("正方形面积："+shape.getArea());
} else if (shape instanceof Circle) {
System.out.println("圆形面积："+shape.getArea());
} else {
System.out.println("未知图形面积：" + shape.getArea());
}
}
// 打印图形周长
public static void printPerimeter(Shape shape) {
System.out.println("周长："+shape.getPerimeter());
// public static void printPerimeter(Shape shape) {
// if (shape instanceof Rectangle) {
// System.out.print("长方形");
// } else if (shape instanceof Circle) {
// System.out.print("圆形");
// } else {
// System.out.print("未知图形");
// }
// System.out.println("周长："+shape.getPerimeter());
// }
public static void printPerimeter(Circle circle) {
System.out.println("圆形周长："+circle.getPerimeter());
}
public static void printPerimeter(Rectangle rectangle) {
System.out.println("长方形周长："+rectangle.getPerimeter());
}
// 打印计算器菜单