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PrintingContainers.java
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47 lines (41 loc) · 1.39 KB
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package holding;
/**
* RUN:
* javac holding/PrintingContainers.java && java holding.PrintingContainers
* OUTPUT:
* [rat, cat, dog, dog]
* [rat, cat, dog, dog]
* [cat, dog, rat]
* [cat, dog, rat]
* [rat, cat, dog]
* {cat=Rags, dog=Spot, rat=Fuzzy}
* {cat=Rags, dog=Spot, rat=Fuzzy}
* {rat=Fuzzy, cat=Rags, dog=Spot}
*/
import java.util.*;
public class PrintingContainers {
static Collection fill(Collection<String> collection) {
collection.add("rat");
collection.add("cat");
collection.add("dog");
collection.add("dog");
return collection;
}
static Map fill(Map<String, String> map) {
map.put("rat", "Fuzzy");
map.put("cat", "Rags");
map.put("dog", "Bosco");
map.put("dog", "Spot");
return map;
}
public static void main(String[] args) {
System.out.println(fill(new ArrayList<String>()));
System.out.println(fill(new LinkedList<String>()));
System.out.println(fill(new HashSet<String>()));
System.out.println(fill(new TreeSet<String>()));
System.out.println(fill(new LinkedHashSet<String>()));
System.out.println(fill(new HashMap<String,String>()));
System.out.println(fill(new TreeMap<String,String>()));
System.out.println(fill(new LinkedHashMap<String,String>()));
}
}