Java实现的贷款金额计算功能示例

/*
*Copyright (c)2015,西南大学计信院
*All rights reserved.
*文件名称：Helloworld.java
*作  者：高硕
*完成日期：2015年10月15日
*版 本 号：v1.0
*问题描述：通过年利率等来计算月支付额和支付总额。
*程序输入：年利率、时间、金额。
*程序输出：月支付额和总支付额。
*/
package practice_01;
import java.util.Scanner;
public class ComputeLoan {
  public static void main(String[] args) {
    // TODO Auto-generated method stub
    System.out.println("编程小技巧测试结果：");
    Scanner input=new Scanner(System.in);
    System.out.println("please input the yearly rate");
    double yearlyrate =input.nextDouble();
    double monthlyrate=yearlyrate/1200;
    System.out.println("please input the number of years");
    int number =input.nextInt();
    System.out.println("please input the amount");
    double amount =input.nextDouble();
    double monthlypayment=amount* monthlyrate/1-1/Math.pow(1+monthlyrate,number*12);
    double totalpayment=monthlypayment*number*12;
    System.out.println("the monthly payment is " + (int)(monthlypayment*100) /100.0) ;
    System.out.println("the total payment is " + (int)(totalpayment)*100 ) ;
  }
}