English | 简体中文 | 繁體中文 | Русский язык | Français | Español | Português | Deutsch | 日本語 | 한국어 | Italiano | بالعربية

Tutoriel de base Java

Java 流程控制

Java 数组

Java 面向对象(I)

Java 面向对象(II)

Java 面向对象(III)

Gestion des exceptions Java

Java 列表(List)

Java Queue(队列)

Java Map集合

Java Set集合

Java 输入输出(I/O)

Java Reader/Writer

Java 其他主题

Java 程序计算单利和复利

    Java instance大全

在此示例中,我们将学习Java中的计算单利和复利。

要理解此示例,您应该了解以下Java编程主题:

示例1:Java程序计算单利

import java.util.Scanner;
class Main {
  public static void main(String[] args) {
    //创建一个Scanner类的对象
    Scanner input = new Scanner(System.in);
    //接受用户的输入
    System.out.print("输入本金: \u00A0");
    double principal = input.nextDouble();
    System.out.print("输入利率: \u00A0");
    double rate = input.nextDouble();
    rate = rate/100;
    System.out.print("输入时间: \u00A0");
    double time = input.nextDouble();
    double interest = (principal * time * rate) / 100;
    System.out.println("Principal: " + principal);
    System.out.println("Interest rate: " + rate);
    System.out.println("Time: " + time);
    System.out.println("单利: \u00A0" + interest);
    input.close();
  }
}

Output result

Enter the principal: 1000
Enter the interest rate: 8
Enter the time: 2
Principal: 1000.0
Interest rate: 8.0
Time: 2.0
单利: 160.0

在上面的示例中,我们使用了Scanner类来接收来自用户的输入的 principalratetime。然后,我们使用单利率公式来计算单利。

单利 = (Principal * Rate * Time) / 100

示例2:Java计算复利

import java.util.Scanner;
class Main {
  public static void main(String[] args) {
    //创建一个Scanner类的对象
    Scanner input = new Scanner(System.in);
    //接受用户的输入
    System.out.print("输入本金: \u00A0");
    double principal = input.nextDouble();
    System.out.print("输入利率: \u00A0");
    double rate = input.nextDouble();
    System.out.print("输入时间: \u00A0");
    double time = input.nextDouble();
    System.out.print("输入复利次数: \u00A0");
    int number = input.nextInt();
    double interest = principal * (Math.pow((1 + rate/100), (time * number))) - principal;
    System.out.println("Principal: " + principal);
    System.out.println("Interest rate: " + rate);
    System.out.println("Time: " + time);
    System.out.println("Number of compound interest periods: " + number);
    System.out.println("Compound interest: " + interest);
    input.close();
  }
}

Output result

Enter the principal: 1000
Enter the interest rate: 10
Enter the time: 3
Enter the number of compound interest periods: 1
Principal: 1000.0
Interest rate: 10.0
Time: 3.0
Number of compound interest periods: 1
Compound interest: 331.00000000000045

In the above example, we use the compound interest formula to calculate compound interest.

Here, we useMath.pow()A method to calculate the power of a number.

Java instance大全