Web Reference: 76 You should add "throws IOException" to your main method: public static void main(String[] args) throws IOException { You can read a bit more about checked exceptions (which are specific to Java) in JLS. Feb 15, 2024 · An IOException in Java occurs when we try to perform some input or output tasks and then some issues occur. Programmers need to handle this issue explicitly with a piece of code that executes when an issue occurs. Jan 16, 2026 · If you’ve ever tried to read a file in Java—whether to count lines, parse data, or process text—you’ve likely encountered the frustrating compile-time error: “Unhandled exception type IOException; must be caught or declared to be thrown”.
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