How do you store and retrieve data from a text file in Java / Android?

Question

The question is in the title.

Answer 1

This isn't specific to Android, but you'd want to create a java.io.File and perhaps use a java.util.Scanner to read it (if it's text). Otherwise you'll create java.io.InputStream and work from that.

Depending on what format you want to use and the nature of the data, you can also use things like java.util.Properties, XML, etc.

See also

• Java Tutorial - Essential Classes - Basic I/O
  • I/O Streams
    • Byte streams
    • Character streams
    • Buffered streams
    • Scanning and formatting

developer.android.com links

• package java.io at developer.android.com
• Developer's guide
  • Application resources
  • Data Storage
    • Shared Preferences/Internal Storage/External Storage
    • SQLite Databases/Network Connection