如何抛出 IOException? [英] how to throw an IOException?

问题描述

public class ThrowException {
    public static void main(String[] args) {
        try {
            foo();
        }
        catch(Exception e) {
             if (e instanceof IOException) {
                 System.out.println("Completed!");
             }
          }
    }
    static void foo() {
        // what should I write here to get an exception?
    }
}

嗨！我刚开始学习异常，需要抓住一个expetion，所以请谁能给我一个解决方案?我会很感激.谢谢！

Hi! I just started learning exceptions and need to catch an expetion, so please can anybody provide me with a solution? I'd be very grateful. Thanks!

推荐答案

static void foo() throws IOException {
    throw new IOException("your message");
}

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