java - Java计算器删除第一行

我需要为我的Java类创建一个抵押计算器，并且整天都在思考如何删除结果的第一行。我需要用Java（没有图形用户界面）编写一个程序，使用200,000美元的贷款，利率为5.75％，期限为30年。然后，我需要显示抵押付款金额，然后列出贷款期限和在贷款期限内为每笔付款支付的利息。

如何使它计算从第1个月开始而不是从0个月开始的每月付款？我要删除第一行$0, $0, $200,000.

import java.text.*;     // Import text formatting classes

public class MortgageCalculator {

    public static void main(String arguments[]) {

        //Variables
        double loanAmount = 200000; // Amount borrowed
        int loanTerm = 360; // Total months of term
        double loanInterest = 0.0575;   // Yearly interest in decimal form

        double monthlyRate = (loanInterest / 12);   //calculate monthly rate

        DecimalFormat df = new DecimalFormat("$###,###.00");    //Formatting the results to decimal form

        // Assign calculation result to monthlyPayment
        double monthlyPayment =
            loanAmount *
            (monthlyRate * Math.pow((1 + monthlyRate), loanTerm)) /
            (Math.pow((1 + monthlyRate), loanTerm) - 1);

        //Print Loan Amount, Interest Rate, Loan Term and Monthly Payment
        System.out.println("The loan amount is: " +
                df.format(loanAmount));

        System.out.println("The intrest rate is: " +
                loanInterest * 100 + "%");

        System.out.println("The term of the loan is: " +
                loanTerm / 12 + " years" + "\n");

        System.out.println("Monthly Payment: " +
                df.format(monthlyPayment) + "\n");

        // New variables

        double balance = loanAmount;
        double monthlyInterest = 0;
        double principal = 0;

        // display 20 lines of results at one time

        // provides columns
        System.out.println("\n\n\nPrincipal\tInterest\tBalance");
        System.out.println("Payment\t\tPayment\t\tRemaining");
        System.out.println("--------- \t--------- \t---------");

        // Start Looping

        int i;

        while (balance > 0) {

            for (i = 1; i < 10; i++) {

                // Display interest, principal, and balance
                System.out.println(df.format(principal) +
                           "\t\t" +
                           df.format(monthlyInterest) +
                           "\t\t" + df.format(balance));

                // New calculations
                monthlyInterest = (balance * monthlyRate);
                principal = (monthlyPayment - monthlyInterest);
                balance = (balance - principal);

            }   // end loop i
            //Pauses screen
            try {
                Thread.sleep(1500);
            }
            catch(InterruptedException e) {
            }
        }       // end while statement

        //Stops loop statement
        if (balance <= 0) {
            System.out.println("The loan balance is: $0.00");
        }
    }
}

最佳答案

要删除第一行，只需在调用println方法之前进行计算即可。

例如：

         for (i = 1; i<10; i++) {

             // New calculations
             monthlyInterest = (balance * monthlyRate);
             principal = (monthlyPayment - monthlyInterest);
             balance = (balance - principal);

             // Display interest, principal, and balance
             System.out.println(df.format(principal) + "\t\t" + df.format(monthlyInterest) + "\t\t" + df.format(balance));

         } // end loop i

您还需要在for循环中相应地调整i。我想这就是你要问的吗？

关于java - Java计算器删除第一行，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/6499957/