throws statement for handled exceptions -- Java

Question

Suppose the following code:

public static void somMethod() throws IOException {

try {
    // some code that can throw an IOException and no other checked exceptions
} catch (IOException e) {
        // some stuff here -- no exception thrown in this block
}

}

someMethod throws an IOException, and no other checked exception, and handles that exception itself.

What exactly

throws IOException

in its declaration is bringing in? From what I know, it is making it possible for the methods calling someMethod() handle that IOException themselves.

is anything else happening here?

If the `catch` block is rethrowing the exception, the `throws IOException` is necessary for any code calling the method. — Sotirios Delimanolis, Aug 31 '13 at 20:51
I wish I can answer this, but I can't understand your question. Could you please rephrase or add more detail? Thanks. — Nayuki, Aug 31 '13 at 20:54
@Nayuki Minase rather asking for verification-- not a Q per se. as plain as it seems, nothing behind it. — Roam, Aug 31 '13 at 20:58

Konstantin Yovkov · Accepted Answer · 2013-08-31T21:05:13.977

2

If the catch block doesn't throw IOException, the throws IOException part in the method signature is not necessary. And also, every time the someMethod() is invoked, there has to be provided a catch block for a possible exception that actually never occurs.

edited Aug 31 '13 at 21:05

answered Aug 31 '13 at 20:54

Konstantin Yovkov

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throws statement for handled exceptions -- Java

1 Answers1