Question

我真的不知道如何解决这个问题。帮助我

这里是我正在做的代码。我非常清楚我的代码是正确的，但是当我尝试编译它时。它继续上去＆＃39;找不到符号错误＆＃39;

systemfinal.java:10 error: cannot find symbol
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

systemfinal.java：

import java.util.*;

public class systemfinal {
    public static void main(String[] args) throws Exception {

        String order, again;
        int quantity, total, loop1, quantity1, quantity2 = 0;
        int price1, price2;

        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        System.out.println(" ");
        System.out.println("\t\t   Welcome to Karenderya ni Ineng!\t\t");
        System.out.println(" ");
        System.out.println(" ");
        System.out.println("\t\t\t\tMENU\t\t\t\t");
        System.out.println(" ");
        System.out.println("   Order code\t\t Meal\t\t\t\t Price ");
        System.out.println(" ");
        System.out.println("      Meals: ");
        System.out.println("      (A1)   \t\t Sisig\t\t\t\t P50");
        System.out.println("      (A2)   \t\t Sisig at Lechon\t\t P60");
        System.out.println("      (A3)   \t\t Lechon\t\t\t\t P50");
        System.out.println("      (A4)   \t\t Pancit Canton\t\t\t P35");
        System.out.println("      (A5)   \t\t Adobong manok\t\t\t P40");
        System.out.println("      (A6)   \t\t Inihaw na Bangus\t\t P60");
        System.out.println("      (A7)   \t\t Sinigang na Bangus\t\t P60");
        System.out.println("      (A8)   \t\t Inihaw na Pusit\t\t P60");
        System.out.println("      (A9)   \t\t Chicken Inasal\t\t\t P60");
        System.out.println("      (A10)   \t\t Fried Chicken\t\t\t P50");
        System.out.println("      Rice: ");
        System.out.println("      (B1)   \t\t Plain Rice \t\t\t P10");
        System.out.println("      (B2)   \t\t Java Rice\t\t\t P10");
        System.out.println("      (B3)   \t\t Fried Rice\t\t\t P10");
        System.out.println("      Drinks: ");
        System.out.println("      (C1)   \t\t Iced tea\t\t\t P15");
        System.out.println("      (C2)   \t\t Softdrinks\t\t\t P25");
        System.out.println("      (C3)   \t\t Water\t\t\t\t P10");
        System.out.println("      (C4)   \t\t Juice\t\t\t\t P20");
        System.out.println("      Desserts: ");
        System.out.println("      (D1)   \t\t Halo-Halo\t\t\t P40");
        System.out.println("      (D2)   \t\t Buko Pie (per box)\t\t P150");
        System.out.println("      (D2)   \t\t Pitchi pitchi (per box)\t P100");
        System.out.println(" ");
        System.out.println(" ");

        do {
            System.out.println("");
            System.out.print("Enter Code Order: ");
            order = br.readLine();
            if (order.equalsIgnoreCase("A1")) {
                price1 = 50;
                System.out.println("Order Description: Sisig ");
            }
            else if (order.equalsIgnoreCase("A2")) {
                price1 = 60;
                System.out.println("Order Description: Sisig at Lechon ");
            }

            System.out.print("Enter Quantity: ");
            quantity1 = Integer.parseInt(br.readLine());

            total += price1 * quantity1;

            System.out.print("Another Order?  (Y/N) : ");
            again = br.readLine();
            if (again.equalsIgnoreCase("y")) {
                loop1 = loop1 + 1;
            }
            else {
                loop1 = loop1 - 100;
            }
        } while (loop1 == 1);

        System.out.println(" ");
        System.out.println("Total Price: " + price2);

    }
}

Answer 1

不要忘记导入您在代码中使用的课程。 BufferedReader和InputStreamReader未包含在java.util中，但在java.io

中

import java.io.BufferedReader;
import java.io.InputStreamReader;

或分组导入

import java.io.*;

Answer 2

BufferReader类位于java.io.BufferedReader中所以你需要在程序开头导入它

将其置于

之下

import java.io.BufferedReader

Answer 3

您必须添加以下导入语句。

  public static boolean add(int newPosition, String newEntry)
  {
    if (newPosition >= 1 && newPosition <= mySize) {
//      ensureCapacity(newPosition);//should you not pass in the index so that the function knows how big the array should be
      int startIndex = newPosition-1;
      mySize++;
      while (startIndex <= mySize)
      {
        String tempEntry = myArray[startIndex];
        myArray[startIndex] = newEntry;
        startIndex++;
        newEntry = tempEntry;
      }
      return true;
    }
    return false;
  }

并将变量import java.io.BufferedReader; import java.io.InputStreamReader;初始化为0。

它一直在找不到符号＆＃39;错误

3 个答案: