java - 预期 token 存在语法错误

Question

我正在尝试解决问题

syntax error on token "}" , { expected.

该程序应该能够计算输入金额的税费。

import javax.swing.JOptionPane;
public class Accounting {

/**
 * @param args
 */

public static void main(String[] args) {
    // TODO Auto-generated method stub

    //declare variables 
    int accountNumber;
    int age=0;
    int months=0;
    double amount=0.0;
    double increasedAmount=0.0;
    double incomeTax=0.0;
    double newAmount=0.0;
    char letter;
    double rate=0.03;
    double interest=0.0;
    double tax=0.40;
    double income=0.0;


    //get input 
    accountNumber=Integer.parseInt(JOptionPane.showInputDialog(null, "Please enter the account number (Type 999 to exit "));
    age=Integer.parseInt(JOptionPane.showInputDialog(null, "Enter the age "));
    amount=Double.parseDouble(JOptionPane.showInputDialog(null, "Enter the amount "));
    months=Integer.parseInt(JOptionPane.showInputDialog(null, "Enter the number of months "));

    letter=(JOptionPane.showInputDialog(null, "--- --- Main Menu --- --- --- " + 
    "\n A. Seniors Account " + "\n B. Income Tax " + "\n C. Special Accounts " + 
            "\n Please select a letter from the menu ( Type X to exit the Menu)")).charAt(0);



    //call function

    interest=amount*rate*months;

    income=amount*tax;

    increasedAmount=calcSenior(amount, interest);

    incomeTax=calcTax(amount, income );


    //display results 
    JOptionPane.showMessageDialog(null, "The increased amount is " + increasedAmount);
    JOptionPane.showMessageDialog(null, "The income tax is " + incomeTax);}



    public static void displayHeading()
    {
        JOptionPane.showMessageDialog(null, "############################# ");  
        JOptionPane.showMessageDialog(null, "Als Accounting Services       ");
        JOptionPane.showMessageDialog(null, "Your success is our business. ");
        JOptionPane.showMessageDialog(null, "############################# ");

    }



// code methods 

    //case 1:
    public static double calcSenior (double amt, double intest)
    {
        double cost; 
        cost=amt+intest;
        return cost;

    }

    //case 2:
    public static double calcTax(double amot, double inc)
    {
        double cost1;
        cost1=amot+inc;
        return cost1;

    }

    //case 3:
    public static void makeDeductions (int age, double amount)
    {
        double newAmount;
        if (age > 40)
        {
          newAmount=amount-100;
          JOptionPane.showMessageDialog(null, "Amount " + amount);
        }
        else 
        {
            JOptionPane.showMessageDialog(null, "No deductions at this time ");
        }
                 }
           } - error

    while (accountNumber != 999)
       {
          Accounting.displayHeading();

          switch (accountNumber)
          {
          case 1:
              calcSenior();
             break;

          case 2:
          calcTax();
          break;    

          case 3:
              makeDeductions();
              break;
              default: JOptionPane.showMessageDialog(null, "Bye! Have a nice day ");

          }//end switch

       }
      }
      }

Answer 1

问题是，你的 while 循环超出了类定义的主体......

public class Accounting {
    //...
} // End of class..

while...

这在 Java 中是非法的。您必须将 while 循环放置在执行上下文中，例如方法或静态初始化程序 block ...