格式标志转换不匹配异常

Question

编写一个程序，输入三件物品的名称、数量和价格。名称可能包含空格。输出税率为 6.25% 的票据。所有价格都应输出到小数点后两位。帐单格式为列式，名称为 30 个字符，数量为 10 个字符，价格为 10 个字符，总数为 10 个字符。示例输入和输出如下所示：import java.util.Scanner;public class ProjectLab {    public static final double SALES_TAX = 8.625;    public static void main(String[]args) {        Scanner input = new Scanner(System.in);        String item1, item2, item3;        int quantity1, quantity2, quantity3;        double price1, price2, price3;        //Input for the first Item        System.out.println("Input the name of item 1: ");        item1 = input.nextLine();        System.out.println("Input quantity of item 1: ");        quantity1 = input.nextInt();        System.out.println("Input price of item 1: ");        price1 = input.nextDouble();        String junk = input.nextLine(); //Junk Line        //Input for the second Item        System.out.println("Input name of item 2: ");        item2 = input.nextLine();        System.out.println("Input quantity of item 2: ");        quantity2 = input.nextInt();        System.out.println("Input price of item 2: ");        price2 = input.nextDouble();        String junk2 = input.nextLine(); //Junk line 2        //Input for the third item        System.out.println("Input name of item 3: ");        item3 = input.nextLine();        System.out.println("Input quantity of item 3: ");        quantity3 = input.nextInt();        System.out.println("Input price of item 3: ");        price3 = input.nextDouble();        double subtotal1 = price1 * quantity1;        double subtotal2 = price2 * quantity2;    }}

Answer 1

你需要用另一个 % 来逃避你的 %

System.out.printf("8.265%% Sales tax %.2f\n        ", tax);