Java – why can’t I get filechannel from filewriter?

I wonder why getchannel is only implemented in fileoutputstream instead of filewriter

Is there any real reason? Is there a way to lock the filewriter in another way?

Thank you

Solution

I suspect it's an oversight - note that filewriter is a subclass of outputstreamwriter and does nothing but pass fileoutputstream to the superclass constructor

Also note that you should hardly use filewriter because it does not allow you to specify encoding Instead, wrap fileoutputstream "manually" in outputstreamwriter – then you can also get the corresponding locked channel