testhashtale.java

来自「这是自定义工作流的图形定义部分」· Java 代码 · 共 54 行

import java.util.Hashtable;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.Date;

/**
 * Created by IntelliJ IDEA.
 * User: smallbeetle
 * Date: Mar 17, 2005
 * Time: 4:51:59 PM
 * To change this template use Options | File Templates.
 */
public class TestHashTale
{
    public static void main(String[] args)
    {
        //活动线程队列，记载所有正在活动的线程
        Hashtable activeMap = new Hashtable();
        for (int i = 0; i < 50; i++)
        {
            activeMap.put(""+i,new Integer(i));
        }
        Enumeration colloect = activeMap.elements();
        while (colloect.hasMoreElements())
        {
            Integer temp =(Integer) colloect.nextElement();
            if (temp.intValue() % 10 ==0)
            {
               activeMap.remove(""+temp.intValue());
            }
        }

        int i =0;
        Iterator colloectset = activeMap.keySet().iterator();
        while (colloectset.hasNext())
        {
            i++;
            System.out.println(activeMap.get(colloectset.next()));
        }

        System.out.println("i = " + i);

        String sr = ""+new Date();
        System.out.println("new Date() = " + new Date()+ "    length="+sr.length());
        Enumeration er = System.getProperties().keys();
        while(er.hasMoreElements())
        {
            String trmp = (String) er.nextElement();
            System.out.println(trmp +"=" + System.getProperties().getProperty(trmp));
        }
    }
}