Java并发编程从入门到精通

Hashtable；

/**
 * Hashtable的简单用法
 */
package thread03;

import java.util.Hashtable;

public class HashtableTest01
{
    public static void main(String[] args)
    {
        Hashtable<String,Integer> ht = new Hashtable<String,Integer>();
        ht.put("one", 1);
        ht.put("two", 2);
        ht.put("three", 3);
        
        Integer num = ht.get("two");
        if(null != num)
        {
            System.out.println("two = " + num);
        }
    }
}

ConcurrentHashMap；

/**
 * ConcurrentHashMap的简单用法
 */
package thread03;

import java.util.concurrent.ConcurrentHashMap;

public class ConcurrentHashMapTest01
{
    public static void main(String[] args)
    {
        ConcurrentHashMap<String,Integer> ch = new ConcurrentHashMap<String,Integer>();
        ch.put("one", 1);
        ch.put("two", 2);
        ch.put("three", 3);
        
        System.out.println(ch.get("two"));
        
        if(ch.containsKey("one") && ch.get("one").equals(1))
        {
            ch.remove("one");
        }
    }
}

CopyOnWriteArrayList；

/**
 * CopyOnWriteArrayList的简单用法
 */
package thread03;

import java.util.Iterator;
import java.util.concurrent.CopyOnWriteArrayList;

public class CopyOnWriteArrayListTest01
{
    public static void main(String[] args)
    {
        CopyOnWriteArrayList<String> cwal = new CopyOnWriteArrayList<String>();
        cwal.add("one");
        cwal.add("three");
        cwal.add(1, "two");
        
        System.out.println(cwal.get(1));
        
        if(cwal.contains("three"))
        {
            Iterator<String> it = cwal.iterator();
            while(it.hasNext())
            {
                System.out.println(it.next());
            }
        }
    }
}

CopyOnWriteArraySet；

/**
 * CopyOnWriteArraySet的简单用法
 */
package thread03;

import java.util.Iterator;
import java.util.concurrent.CopyOnWriteArraySet;

public class CopyOnWriteArraySetTest01
{
    public static void main(String[] args)
    {
        CopyOnWriteArraySet<String> cwas = new CopyOnWriteArraySet<String>();
        cwas.add("one");
        cwas.add("two");
        cwas.add("three");
        
        if(cwas.contains("three"))
        {
            Iterator<String> it = cwas.iterator();
            while(it.hasNext())
            {
                System.out.println(it.next());
            }
        }
    }
}

Vector；

/**
 * Vector的简单用法
 */
package thread03;

import java.util.Iterator;
import java.util.Vector;

public class VectorTest01
{
    public static void main(String[] args)
    {
        Vector<String> vector = new Vector<String>();
        vector.addElement("one");
        vector.addElement("two");
        vector.addElement("three");
        vector.removeElement("two");
        
        if(vector.contains("three"))
        {
            Iterator<String> it = vector.iterator();
            while(it.hasNext())
            {
                System.out.println(it.next());
            }
        }
    }
}

StringBuffer；