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<?xml version="1.0" encoding="UTF-8" standalone="no"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 11. Core Utilities</title><link rel="stylesheet" href="core.css" type="text/css"/><meta name="generator" content="DocBook XSL Stylesheets V1.74.0"/></head><body><div class="chapter" title="Chapter 11. Core Utilities"><div class="titlepage"><div><div><h1 class="title"><a id="learnjava3-CHP-11"/>Chapter 11. Core Utilities</h1></div></div></div><p>In this chapter, we’ll continue our look at the core Java APIs, covering more of the tools of the <code class="literal">java.util</code> package. The <a id="I_indexterm11_id735950" class="indexterm"/><code class="literal">java.util</code> package includes a wide range of utilities including tools for mathematical operations, fundamental data structures (collections), working with dates and times, storing user preference data, and logging.</p></div></body></html>