(财务应用程序：计算利息）如果知道收支余额和年利率的百分比

import java.util.Scanner;
/*
(财务应用程序：计算利息）如果知道收支余额和年利率的百分比，就可以使用下面的公式计算 下个月要支付的利息额：
 利息额 = 收支余额 x (年利率 / 1200) 
 编写程序，读取收支余额和年百分利率，显示两个版本的下月利息。下面是一个运行示例： 
 */
public class NKTest {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
//        输入资金和利率    
        System.out.print("Enter balance and interest rate (e.g., 3 for 3%)");
        double balance = sc.nextDouble();
        double interestRate = sc.nextDouble();
//         利息额 = 收支余额 x (年利率 / 1200)
        double interestCost = balance * (interestRate / 1200);
System.out.print("The interest is:"+ String.format("%.5f", interestCost));
    }
}

package ab;
import java.util.Scanner;
public class As {
    public static void main(String[] args) {
        double a,b;
        System.out.print("Enter balance and interest rate (e.g., 3 for 3%):");
        Scanner in=new Scanner(System.in);
        a=in.nextDouble();
        b=in.nextDouble();
        double c;
        c=a*(b/1200);
        System.out.print("The interest is"+" "+String.format("%.5f",c));
    }

}