java 模拟贷款实现等额本息还款

还是菜鸟的我，在学习完java面向对象的思想后编写了一个模拟贷款的程序！！

一.首先创建一个类用于给变量赋值和输出。

代码如下：

public class Loan {
	private  double monthlyrate;//月利率
	private  int summonth;	//贷款总月数
	private  double loanmount;//贷款本金
	public Loan(double yearrate,double loans,int year){
	this.monthlyrate=yearrate/(12*100);
	this.summonth=year*12;
	this.loanmount=loans;
	}
	public double getMonthlyPayment() {
		return (loanmount*monthlyrate*Math.pow(1+monthlyrate,summonth))/(Math.pow(1+monthlyrate,summonth)-1);
	}
	public double getTotalPayment() {
		return getMonthlyPayment()*summonth;
	}
	

}

二.再在同一个包下新建一个类用于输出还款总额。

代码如下：

import java.text.DecimalFormat;
import java.util.Scanner;

public class Loanmain {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		double yearrate;double loans ;
		int year;
		Scanner in =new Scanner (System.in);
		System.out.println("请输入贷款年利率:");
		yearrate=in.nextDouble();
		System.out.println("请输入贷款年限:");
		year=in.nextInt();
		System.out.println("请输入贷款总金额");
		loans=in.nextDouble();
		Loan a=new Loan(yearrate,loans,year);
		DecimalFormat df=new DecimalFormat("#.00");
		System.out.println("等额本息的情况下每个月的还款额是"+a.getMonthlyPayment()+"元");
		System.out.println("等额本息情况下总的还款额是"+df.format(a.getTotalPayment())+"元");
		
	}

}

三.运行结果如下：

标签：等额,double,year,System,summonth,yearrate,本息,java,public
来源： https://blog.csdn.net/weixin_46351306/article/details/110943252