Tuesday, June 01, 2010

Impossible Things

"Why, sometimes I've believed as many as six impossible things before breakfast." Alice in Wonderland

I was testing jSuneido on a Windows system and I got:

        at java.nio.MappedByteBuffer.force0(Native Method)
        at java.nio.MappedByteBuffer.force(MappedByteBuffer.java:154)

So I went to add a try-catch to log this error. But Eclipse told me MappedByteBuffer.force doesn't throw IOException

I check the documentation but it didn't mention IOException either.

This is a "checked" exception, meaning you can't throw it without declaring that you throw it, and you can't call something that may throw it without catching it.

But I guess all that goes out the window when you get down to native methods.

I just caught the more general base Exception instead.

PS. I wasn't able to recreate the error, I just hope it won't come back to haunt me.

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