FileOutputStream.write(byte[])处理问题

Question

那个 FileOutputStream.write(byte[])这个方法，底层是单个字节循环 还是一次性批量写入流？

最好能有源码之类的东西瞧瞧！

Answer 1

源码
   public void write(byte b[]) throws IOException {
        Object traceContext = IoTrace.fileWriteBegin(path);
        int bytesWritten = 0;
        try {
            writeBytes(b, 0, b.length, append);
            bytesWritten = b.length;
        } finally {
            IoTrace.fileWriteEnd(traceContext, bytesWritten);
        }
    }