import java.util.Scanner;
public class xt2_21 {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        System.out.print("Enter investment amount: ");
        double touzizonge = input.nextDouble();
        System.out.print("Enter annual interest rate in percentage: ");
        double nianlilv = input.nextDouble();    // 注意此处需要除以1200而不是12，因为用户输入的年利率是不带百分号的
double yuelilv = nianlilv / 1200;
 System.out.print("Enter number of years: ");
    double year = input.nextDouble();
    double year12 = year * 12;
    double weilaijine = touzizonge * Math.pow(1 + yuelilv,year12);
    System.out.println("Accumulated value is $" + weilaijine);

    }
}
ITPub博客

请问如何使输出的weilaijine的值保留两位小数

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