What is a File System

Definition:

• FileSystem is a way of storing data in documents instead of key-value mapping mechanism.
• Using this mechanism, we can fetch, add, delete, and move it to a different location.
• We use it to store large size of data like images, audio, video and so on.
• We can store the data here instead of shared preferences or local database.

How to use the file system

• We need to get access to the root-file or root-directory.
• Once we have the access, we can add more children files within the accessed location.
• The file is created with a name using the stream

How the streams work

• Stream is a pipe that can send data in one direction, or receive the data from the other direction.
• We have two types of streams an input stream and an output stream.
  • Input streams ---> Used for reading data from a file.
  • Output streams --> Used for writing data to a file.
• We get a reference to file or directory, Then Using that obtained reference create an input stream or the output stream. Then using the particular stream we modify or read the data.