Java受注番号生成ツール(実装一)オブジェクトロックベース

import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * @ClassName: MakeOrderNum
 * @CreateTime 2015 9 13    4:51:02
 * @author : mayi
 * @Description:        ，        ，    1  1000 ，   
 *
 */
public class MakeOrderNum {
	/**
	 *    ，       
	 */
	private static Object lockObj = "lockerOrder";
	/**
	 *         
	 */
	private static long orderNumCount = 0L;
	/**
	 *              
	 */
	private int maxPerMSECSize=1000;
	/**
	 *         ，    1  1000 ，   
	 * @param tname    
	 */
	public void makeOrderNum(String tname) {
		try {
			//         
			String finOrderNum = "";
			synchronized (lockObj) {
				//                   ，     
				long nowLong = Long.parseLong(new SimpleDateFormat("yyyyMMddHHmmssSSS").format(new Date()));
				//          ，     ，  1      1000 ，1 100 
				if (orderNumCount > maxPerMSECSize) {
					orderNumCount = 0L;
				}
				//     
                String countStr=maxPerMSECSize +orderNumCount+"";
                finOderNum=nowLong+countStr.substring(1);
				orderNumCount++;
				System.out.println(finOrderNum + "--" + Thread.currentThread().getName() + "::" + tname );
				// Thread.sleep(1000);
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	public static void main(String[] args) {
		//               
		try {
			for (int i = 0; i < 200; i++) {
				Thread t1 = new Thread(new Runnable() {
					public void run() {
						MakeOrderNum makeOrder = new MakeOrderNum();
						makeOrder.makeOrderNum("a");
					}
				}, "at" + i);
				t1.start();

				Thread t2 = new Thread(new Runnable() {
					public void run() {
						MakeOrderNum makeOrder = new MakeOrderNum();
						makeOrder.makeOrderNum("b");
					}
				}, "bt" + i);
				t2.start();
			}
		} catch (Exception e) {
			e.printStackTrace();
		}

	}

}