93 lines
1.5 KiB
Java
93 lines
1.5 KiB
Java
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// understandingcollections/SetOrder.java
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// (c)2016 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://OnJava8.com for more book information.
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import java.util.*;
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import onjava.HTMLColors;
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public class SetOrder {
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static String[] sets = {
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"java.util.HashSet",
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"java.util.TreeSet",
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"java.util.concurrent.ConcurrentSkipListSet",
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"java.util.LinkedHashSet",
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"java.util.concurrent.CopyOnWriteArraySet",
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};
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static List<String> RLIST =
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new ArrayList<>(HTMLColors.LIST);
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static {
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Collections.reverse(RLIST);
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}
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public static void
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main(String[] args) throws Exception {
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for(String type: sets) {
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System.out.format("[-> %s <-]\n",
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type.substring(type.lastIndexOf('.') + 1));
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@SuppressWarnings("unchecked")
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Set<String> set = (Set<String>)
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Class.forName(type).newInstance();
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set.addAll(RLIST);
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set.stream()
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.limit(10)
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.forEach(System.out::println);
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}
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}
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}
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/* Output:
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[-> HashSet <-]
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MediumOrchid
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PaleGoldenRod
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Sienna
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LightSlateGray
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DarkSeaGreen
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Black
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Gainsboro
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Orange
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LightCoral
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DodgerBlue
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[-> TreeSet <-]
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AliceBlue
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AntiqueWhite
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Aquamarine
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Azure
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Beige
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Bisque
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Black
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BlanchedAlmond
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Blue
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BlueViolet
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[-> ConcurrentSkipListSet <-]
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AliceBlue
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AntiqueWhite
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Aquamarine
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Azure
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Beige
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Bisque
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Black
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BlanchedAlmond
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Blue
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BlueViolet
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[-> LinkedHashSet <-]
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YellowGreen
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Yellow
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WhiteSmoke
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White
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Wheat
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Violet
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Turquoise
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Tomato
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Thistle
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Teal
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[-> CopyOnWriteArraySet <-]
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YellowGreen
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Yellow
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WhiteSmoke
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White
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Wheat
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Violet
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Turquoise
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Tomato
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Thistle
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Teal
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*/
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