Commenting try catch statements

Question

What is the proper place to explain error handling in a try-catch statement? It seems like you could put explanatory comments at either the beginning of the try block or the catch block.

// Possible comment location 1
try
{   
    // real code
}
// Possible comment location 2
catch
{
    // Possible comment location 3

    // Error handling code

}

Answer 1

I usually do the following. If there's only one exception being handled, I usually don't bother since it should be self-documenting.

try
{   
    real code // throws SomeException
    real code // throws SomeOtherException
}
catch(SomeException se)
{
    // explain your error handling choice if it's not obvious
}
catch(SomeOtherException soe)
{
    // explain your error handling choice if it's not obvious
}