CollectionAll.java Source code

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Here is the source code for CollectionAll.java

Source

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.SortedMap;
import java.util.SortedSet;
import java.util.TreeMap;
import java.util.TreeSet;

public class CollectionAll {
    public static void main(String[] args) {
        List list1 = new LinkedList();
        list1.add("list");
        list1.add("dup");
        list1.add("x");
        list1.add("dup");
        traverse(list1);
        List list2 = new ArrayList();
        list2.add("list");
        list2.add("dup");
        list2.add("x");
        list2.add("dup");
        traverse(list2);
        Set set1 = new HashSet();
        set1.add("set");
        set1.add("dup");
        set1.add("x");
        set1.add("dup");
        traverse(set1);
        SortedSet set2 = new TreeSet();
        set2.add("set");
        set2.add("dup");
        set2.add("x");
        set2.add("dup");
        traverse(set2);
        LinkedHashSet set3 = new LinkedHashSet();
        set3.add("set");
        set3.add("dup");
        set3.add("x");
        set3.add("dup");
        traverse(set3);
        Map m1 = new HashMap();
        m1.put("map", "Java2s");
        m1.put("dup", "Kava2s");
        m1.put("x", "Mava2s");
        m1.put("dup", "Lava2s");
        traverse(m1.keySet());
        traverse(m1.values());
        SortedMap m2 = new TreeMap();
        m2.put("map", "Java2s");
        m2.put("dup", "Kava2s");
        m2.put("x", "Mava2s");
        m2.put("dup", "Lava2s");
        traverse(m2.keySet());
        traverse(m2.values());
        LinkedHashMap /* from String to String */ m3 = new LinkedHashMap();
        m3.put("map", "Java2s");
        m3.put("dup", "Kava2s");
        m3.put("x", "Mava2s");
        m3.put("dup", "Lava2s");
        traverse(m3.keySet());
        traverse(m3.values());
    }

    static void traverse(Collection coll) {
        Iterator iter = coll.iterator();
        while (iter.hasNext()) {
            String elem = (String) iter.next();
            System.out.print(elem + " ");
        }
        System.out.println();
    }

}