Question

I have next code:

InputStream is = new FileInputStream("test.txt");
// do something
try {
    is.close();
} catch(IOException ex) {
    // do nothing
    // or
    // NOP
    // or something else?
}

The question is is there any convention in Java world for comment that tells do nothing? Like in my case I want to do nothing if it is not possible to close InputStream.
Is the “NOP” comment acceptable? It is from Assembler and it means “no operation”.

Answer 1

try {
    ...
} catch (IOException ignored) {}

is complete, clear and succinct.

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But you should be using something like Apache Commons IO IOUtils.closeQuietly(InputStream).