| Documentation Contents

# Preferences API

> Applications require preference and configuration data to adapt to the needs of different users and environments. The java.util.prefs package provides a way for applications to store and retrieve user and system preference and configuration data. The data is stored persistently in an implementation-dependent backing store. There are two separate trees of preference nodes, one for user preferences and one for system preferences.

### Overview

- Overview - An overview of the Preferences API.

### API Specification

- java.util.prefs package

### More Information

- Design FAQ - Answers to frequently asked questions concerning the Preferences API.

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