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Java Tutorial/Collections/Prebuilt Collections - История изменений
2026-04-05T20:27:38Z
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Admin: 1 версия
2010-06-01T05:05:00Z
<p>1 версия</p>
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Admin
http://jexp.ru/index.php?title=Java_Tutorial/Collections/Prebuilt_Collections&diff=4719&oldid=prev
в 17:44, 31 мая 2010
2010-05-31T17:44:27Z
<p></p>
<p><b>Новая страница</b></p><div>== Empty Collections ==<br />
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<p>The Collections class provides three constants to represent empty collections</p><br />
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<source lang="java"><br />
public static final List EMPTY_LIST<br />
public static final Map EMPTY_MAP<br />
public static final Set EMPTY_SET</source><br />
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<!-- end source code --><br />
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== Singleton Collections ==<br />
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<source lang="java"><br />
import java.util.Collections;<br />
public class MainClass{<br />
public static void main(String[] a){<br />
System.out.println(Collections.singletonList("a")); <br />
System.out.println(Collections.singleton("a"));<br />
System.out.println(Collections.singletonMap("a","b"));<br />
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}<br />
}</source><br />
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<!-- end source code --><br />
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<pre class=codeResult>[a]<br />
[a]<br />
{a=b}</pre></div>