Cannot find file after decompressing from archive in Android

I am using ZipInputStream and BufferedOutputStream to decompress a file from a zip archive in Android 1.6. The code runs without exceptions, but when I check the existance of the file, I can't find it. I am just looking for the filename. Is there an application directory that stores this file? Do I need to specify 开发者_如何转开发a directory?

Check Context.getFilesDir().