圆面积计算器 : double « 数据类型 « Java

En
Java
1. 图形用户界面
2. 三维图形动画
3. 高级图形
4. 蚂蚁编译
5. Apache类库
6. 统计图
7. 类
8. 集合数据结构
9. 数据类型
10. 数据库JDBC
11. 设计模式
12. 开发相关类
13. EJB3
14. 电子邮件
15. 事件
16. 文件输入输出
17. 游戏
18. 泛型
19. GWT
20. Hibernate
21. 本地化
22. J2EE平台
23. 基于J2ME
24. JDK-6
25. JNDI的LDAP
26. JPA
27. JSP技术
28. JSTL
29. 语言基础知识
30. 网络协议
31. PDF格式RTF格式
32. 映射
33. 常规表达式
34. 脚本
35. 安全
36. Servlets
37. Spring
38. Swing组件
39. 图形用户界面
40. SWT-JFace-Eclipse
41. 线程
42. 应用程序
43. Velocity
44. Web服务SOA
45. 可扩展标记语言
Java 教程
Java » 数据类型 » double屏幕截图 
圆面积计算器
  


import java.util.Scanner;

public class CircleAreaApp {
  static Scanner sc = new Scanner(System.in);

  public static void main(String[] args) {
    System.out.print("Enter the radius of your circle: ");
    double r = sc.nextDouble();
    double area = Math.PI * (r * r);
    System.out.println("The area is " + area);
  }
}

   
  
Related examples in the same category
1. Double class creates primitives that wrap themselves around data items of the double data type
2. Min and Max values of data type double
3. Java double: double is 64 bit double precision type and used when fractional precision calculation is required.
4. Use toString method of Double class to convert Double into String.
5. Use Double constructor to convert double primitive type to a Double object.
6. Convert java Double to numeric primitive data types
7. Java的字符串转换为双
8. Java的比较
9. Create a Double object using one of the below given constructors
10. Java Double isInfinite
11. Java Double isNaN method
12. Compare Two Java double Arrays
13. Convert from double to String
14. Convert from String to double
15. Converting a String to a double type Number
16. Ternary operator on double value
17. 二进制搜索
18. Linear Searching double Arrays
19. A Program That Uses the Mathematical Methods of the Math Class
20. A Program That Uses the Rounding Methods of the Math Class
21.  Get Double Number
22. Compute the value of 2/3 of 5Compute the value of 2/3 of 5
23. Show INFINITY and NaN
24. 双数组
25. 取得整数和小数部分
www.java2java.com | Contact Us
Copyright 2010 - 2030 Java Source and Support. All rights reserved.
All other trademarks are property of their respective owners.