41 lines
1.1 KiB
Java
41 lines
1.1 KiB
Java
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//: holding/PrintingContainers.java
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// Containers print themselves automatically.
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import java.util.*;
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import static net.mindview.util.Print.*;
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public class PrintingContainers {
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static Collection fill(Collection<String> collection) {
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collection.add("rat");
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collection.add("cat");
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collection.add("dog");
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collection.add("dog");
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return collection;
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}
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static Map fill(Map<String,String> map) {
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map.put("rat", "Fuzzy");
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map.put("cat", "Rags");
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map.put("dog", "Bosco");
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map.put("dog", "Spot");
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return map;
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}
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public static void main(String[] args) {
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print(fill(new ArrayList<String>()));
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print(fill(new LinkedList<String>()));
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print(fill(new HashSet<String>()));
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print(fill(new TreeSet<String>()));
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print(fill(new LinkedHashSet<String>()));
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print(fill(new HashMap<String,String>()));
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print(fill(new TreeMap<String,String>()));
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print(fill(new LinkedHashMap<String,String>()));
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}
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} /* Output:
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[rat, cat, dog, dog]
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[rat, cat, dog, dog]
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[dog, cat, rat]
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[cat, dog, rat]
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[rat, cat, dog]
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{dog=Spot, cat=Rags, rat=Fuzzy}
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{cat=Rags, dog=Spot, rat=Fuzzy}
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{rat=Fuzzy, cat=Rags, dog=Spot}
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*///:~
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