Java 这个程序给了我一个无限的菜单（DoWhile）

我是新来的。我试图运行一个程序，每当我试图执行它时，它总是给我一个无限的菜单循环。任何帮助都将不胜感激

public void show()throws IOException
 {
                   BufferedReader z=new BufferedReader(new InputStreamReader(System.in));
                     int ch;
                     input();
                     calculate();

                         System.out.println(" 1.Print the names of Employees having more than average salary");
                         System.out.println(" 2.Find the maximum and minimum gross salary ");
                         System.out.println(" 3.To find the net salaries of employees in ascending order");
                         System.out.println(" 4.To print the name of employee having the longest name");
                         System.out.println(" 5.To find the reverse names of the employees");
                         System.out.println(" 6.To find the reverse of employee's name");
                         System.out.println(" 7.Exit");
                         System.out.println("Enter your choice");
                         ch=Integer.parseInt(z.readLine());


                         switch(ch)
                         {
                            case 1:calc_avg();
                            break;
                            case 2:max_and_min();
                            break;
                            case 3:sort();
                            break;
                            case 4:vowel();
                            break;
                            case 5:longest();
                            break;
                            case 6:reverse_name();
                            break;
                            case 7:
                            System.out.println("Close");
                            break;
                            default:System.out.println("Wrong choice ! ");
                            }
                            }
                            while(ch>=1&&ch<=7);

} }

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这总是给我一个无限循环。如何修复此问题？

以下是如何正确修复此问题

public void show()throws IOException {
        BufferedReader z=new BufferedReader(new InputStreamReader(System.in));
        int ch=0;
        input();
        calculate();
        System.out.println(" 1.Print the names of Employees having more than average salary");
        System.out.println(" 2.Find the maximum and minimum gross salary ");
        System.out.println(" 3.To find the net salaries of employees in ascending order");
        System.out.println(" 4.To print the name of employee having the longest name");
        System.out.println(" 5.To find the reverse names of the employees");
        System.out.println(" 6.To find the reverse of employee's name");
        System.out.println(" 7.Exit");
        System.out.println("Enter your choice :");
        ch=Integer.parseInt(z.readLine());
        while(!(ch>=1&&ch<=7)){
            System.out.println("Wrong choice ! Please enter a good choice :");
            ch=Integer.parseInt(z.readLine());
        }

        switch(ch){
        case 1:
            calc_avg();
            break;
        case 2:
            max_and_min();
            break;
        case 3:
            sort();
            break;
        case 4:
            vowel();
            break;
        case 5:
            longest();
            break;
        case 6:
            reverse_name();
            break;
        case 7:
            System.out.println("Close");
            break;
        }
    }

---

您的示例不完整，但根据您发布的内容：whilech>=1&&chThanks获得回复。我该如何修复它？你忘记粘贴代码了还是什么…循环从哪里开始？？默认语句中断在哪里？欢迎使用堆栈溢出！看起来您需要学习使用调试器。请随便吃点。如果你以后仍然有问题，请随时回来提供更多细节。是的，我粘贴了整个代码，他们说了一些关于格式的事情。我很抱歉我是个笨蛋。但是我已经发布了default或break语句，甚至dowhile循环。我需要粘贴更多的东西吗？检查它以接受好的答案，这样，您就不用客气了；