actionformbeans.java

这是一个关于J2EE的开源包common里的许多组件的示例应用程序,可以借鉴.

package collections;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.io.Serializable;
import java.lang.reflect.InvocationTargetException;

import org.apache.commons.beanutils.BeanComparator;
import org.apache.commons.beanutils.PropertyUtils;
import org.apache.commons.collections.FastHashMap;

/**
 * Title : Base Dict Class
 * Description : here Description is the function of class, here maybe multirows    
 * @author        <a href="mailto:[e-mail]">kevin</a> 
 * @Version       1.0 
 */

/**
 * Class description goes here.
 * @version 1.0  2005-9-22 
 * @author kevin
 */
public class ActionFormBeans implements Serializable
{
	protected FastHashMap formBeans = new FastHashMap();

	public boolean getFast()
	{

		return (formBeans.getFast());

	}

	public void setFast(boolean fast)
	{

		formBeans.setFast(fast);
	}

	public void addFormBean(ActionFormBean formBean)
	{

		formBeans.put(formBean.getName(), formBean);

	}

	public ActionFormBean findFormBean(String name)
	{

		return ((ActionFormBean)formBeans.get(name));

	}

	public String[] findFormBeans()
	{

		return ((String[])formBeans.keySet().toArray(new String[formBeans.size()]));

	}

	public void removeFormBean(ActionFormBean formBean)
	{

		formBeans.remove(formBean.getName());

	}

	public static void sortBean()
	{
		Country c1 = new Country("China");
		Country c2 = new Country("America");
		Country c3 = new Country("England");
		Country c4 = new Country("Italy");
		List people = new ArrayList();
		People p = new People(33, "Jake", c2);
		people.add(p);
		p = new People(28, "Sam", c3);
		people.add(p);
		p = new People(25, "Sunpeng", c1);
		people.add(p);
		p = new People(29, "Kevin", c4);
		people.add(p);
		p = new People(30, "Susan", c3);
		people.add(p);

		BeanComparator comp = new BeanComparator("age");
		Collections.sort(people, comp);
		int i = 0;
		System.out.println("Sort by age====");
		for(i = 0; i < people.size(); i++)
		{
			System.out.println("           ====" + ((People)people.get(i)).getName() + " || age=" + ((People)people.get(i)).getAge());
		}
		comp = new BeanComparator("name");
		Collections.sort(people, comp);
		System.out.println("Sort by name====");
		for(i = 0; i < people.size(); i++)
		{
			System.out.println("           ====" + ((People)people.get(i)).getName());
		}
		comp = new BeanComparator("country");
		Collections.sort(people, comp);
		System.out.println("Sort by country====");
		try
		{
			for(i = 0; i < people.size(); i++)
			{

				System.out.println("           ====" + ((People)people.get(i)).getName() + " || country.name=" + PropertyUtils.getNestedProperty((People)people.get(i), "country.name"));

			}

		}
		catch(IllegalAccessException e)
		{
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		catch(InvocationTargetException e)
		{
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		catch(NoSuchMethodException e)
		{
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	public static void fastMap()
	{
		ActionFormBean formBean;
		ActionFormBeans formBeans = new ActionFormBeans();
		formBeans.setFast(false);
		for(int i = 0; i < 22; i++)
		{
			formBean = new ActionFormBean();
			formBean.setName(i + "=>[Test]");
			formBeans.addFormBean(formBean);
		}
		String[] names = formBeans.findFormBeans();
		for(int j = 0; j < names.length; j++)
		{
			System.out.println(j + "===" + names[j]);
		}
	}

	public static void main(String[] args)
	{
		sortBean();
	}
}