Java 如何退出switch语句并返回While循环？

所以我尝试的是，在我通过其中一个搜索得到足够的结果后，转到另一个搜索。换句话说，我想退出switch语句并返回while循环。我该怎么做

我将此作为代码：

public static void main(String[] args) throws FileNotFoundException {


    String input = "";
    Scanner scan = new Scanner(System.in);
    System.out.println("Hello, input witch method you shall use(name, amount or date): ");
    input = scan.next();

    Warehouse storage = new Warehouse();
    //todo while loop kad amzinai veiktu. Ar to reikia ?
    while (!input.equals("quit")) {
        switch (input) {
            case "name":
                storage.searchByName();
                break;
            case "amount":
                storage.searchByAmount();
                break;
            default:
                System.out.println("Wrong input!");

        }

    }
}

---

一旦你进入你的循环，你就永远不会更新

输入

，因此你会在

循环时（无限）返回到你的
。有几种方法可以做到这一点，一种是DoWhile循环。像

String helloMsg = "Hello, input which method you shall use(name, amount or date): ";
Scanner scan = new Scanner(System.in);
Warehouse storage = new Warehouse();
String input;
do {
    System.out.println(helloMsg);
    input = scan.next();
    switch (input) {
    case "name":
        storage.searchByName();
        break;
    case "amount":
        storage.searchByAmount();
        break;
    default:
        System.out.println("Wrong input!");
    }
} while (!input.equals("quit"));

另一个是无限循环，您可以使用
quit
来中断它。像

String helloMsg = "Hello, input which method you shall use(name, amount or date): ";
Scanner scan = new Scanner(System.in);
Warehouse storage = new Warehouse();
loop: while (true) {
    System.out.println(helloMsg);
    String input = scan.next();
    switch (input) {
    case "name":
        storage.searchByName();
        break;
    case "amount":
        storage.searchByAmount();
        break;
    case "quit":
        break loop;
    default:
        System.out.println("Wrong input!");
    }
}

注意：事实并非如此。
一旦你进入循环，你永远不会更新
输入
，因此你会在
循环（无限）时返回到
。有几种方法可以做到这一点，一种是DoWhile循环。像

String helloMsg = "Hello, input which method you shall use(name, amount or date): ";
Scanner scan = new Scanner(System.in);
Warehouse storage = new Warehouse();
String input;
do {
    System.out.println(helloMsg);
    input = scan.next();
    switch (input) {
    case "name":
        storage.searchByName();
        break;
    case "amount":
        storage.searchByAmount();
        break;
    default:
        System.out.println("Wrong input!");
    }
} while (!input.equals("quit"));

另一个是无限循环，您可以使用
quit
来中断它。像

String helloMsg = "Hello, input which method you shall use(name, amount or date): ";
Scanner scan = new Scanner(System.in);
Warehouse storage = new Warehouse();
loop: while (true) {
    System.out.println(helloMsg);
    String input = scan.next();
    switch (input) {
    case "name":
        storage.searchByName();
        break;
    case "amount":
        storage.searchByAmount();
        break;
    case "quit":
        break loop;
    default:
        System.out.println("Wrong input!");
    }
}

注意：它不是。
哦，很好，我没有想到在开关本身中使用“退出”！谢谢你的更正！哦，太好了，我没想到在开关本身中使用“退出”这个词！谢谢你的更正！