1 import static java.lang.System.out; 2 3 import java.util.ArrayList; 4 import java.util.Collection; 5 import java.util.HashMap; 6 import j ...
1 import static java.lang.System.out; 2 3 import java.util.ArrayList; 4 import java.util.Collection; 5 import java.util.HashMap; 6 import java.util.HashSet; 7 import java.util.LinkedHashMap; 8 import java.util.LinkedHashSet; 9 import java.util.LinkedList;10 import java.util.Map;11 import java.util.TreeMap;12 import java.util.TreeSet;13 14 public class ContainerFramework {15 16 static Collection fill(Collection<String> collection) {17 collection.add("rat");18 collection.add("cat");19 collection.add("dog");20 collection.add("dog");21 return collection;22 }23 24 static Map fill(Map<String, String> map) {25 map.put("rat", "Fuzzy");26 map.put("cat", "Rags");27 map.put("dog", "Bosco");28 map.put("dog", "Spot");29 return map;30 }31 public static void main(String[] args) {32 out.println(fill(new ArrayList<String>()));33 out.println(fill(new LinkedList<String>()));34 out.println(fill(new HashSet<String>()));35 out.println(fill(new TreeSet<String>()));36 out.println(fill(new LinkedHashSet<String>()));37 out.println(fill(new HashMap<String, String>()));38 out.println(fill(new TreeMap<String, String>()));39 out.println(fill(new LinkedHashMap<String, String>()));40 }41 }
原标题:JAVA编程思想(第四版)学习笔记
关键词:JAVA
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