[Java] 容器-06 TestArgsWords / BasicGeneric

import java.util.*;

public class TestArgsWords {
    private static final int ONE = 1;

    public static void main(String args[]) {
        Map<String, Integer> m = new HashMap<String, Integer>();
        for (int i = 0; i < args.length; i++) {

            if (!m.containsKey(args[i])) {
                m.put(args[i], ONE);
            } else {
                int freq = m.get(args[i]);
                m.put(args[i], freq + 1);
            }

        }
        System.out.println(m.size() + " distinct words detected:");
        System.out.println(m);
    }
}

import java.util.*;

public class BasicGeneric {
    public static void main(String[] args) {
        List<String> c = new ArrayList<String>();
        c.add("aaa");
        c.add("bbb");
        c.add("ccc");
        for (int i = 0; i < c.size(); i++) {
            String s = c.get(i);
            System.out.println(s);
        }

        Collection<String> c2 = new HashSet<String>();
        c2.add("aaa");
        c2.add("bbb");
        c2.add("ccc");
        for (Iterator<String> it = c2.iterator(); it.hasNext();) {
            String s = it.next();
            System.out.println(s);
        }
    }
}

class MyName implements Comparable<MyName> {
    int age;

    public int compareTo(MyName mn) {
        if (this.age > mn.age)
            return 1;
        else if (this.age < mn.age)
            return -1;
        else
            return 0;
    }
}