单例（后半部分）

/**
     * 在jboss启动的时候获取第一次统计时间
     * @return date类型，第一次执行的整点时间
     */
    public static Date getFistStatistDate()
    {
        Calendar c = Calendar.getInstance();
        int hour = c.get(Calendar.HOUR);
        int min = c.get(Calendar.MINUTE);

        //如果当前是23点里面分两种情况
        if (hour == 23)
        {
            //是整点，返回整点
            if (min == 0)
            {
                c.set(Calendar.SECOND, 0);
                return c.getTime();
            }

            //不是整点，返回0点
            else
            {
                c.set(Calendar.HOUR, hour + 1);
                c.set(Calendar.MINUTE, 0);
                c.set(Calendar.SECOND, 0);
                return c.getTime();
            }

        }

        //如果当前不是23点，也分两种
        else
        {
            //如果是其他正点，返回整点
            if (min == 0)
            {
                c.set(Calendar.SECOND, 0);
                return c.getTime();
            }

            //否则返回下一个整点
            else
            {
                c.set(Calendar.HOUR, hour + 1);
                c.set(Calendar.MINUTE, 0);
                c.set(Calendar.SECOND, 0);
                return c.getTime();
            }
        }
    }


    /**
     * 获取下一个统计时间整点时刻,测试通过
     * @return
     */
    public static Date getNextStatistDate()
    {
        Calendar c = Calendar.getInstance();
        int hour = c.get(Calendar.HOUR);
        c.set(Calendar.HOUR, hour + 1);
        c.set(Calendar.MINUTE, 0);
        c.set(Calendar.SECOND, 0);
        return c.getTime();
    }


    private void beginStatist() throws Exception
    {
        try
        {
            DmfTransactionDelegate.beginTransaction();
            DmfStatistDelegate.statist();
            DmfTransactionDelegate.commit();
        }
        catch (Throwable e)
        {
            e.printStackTrace();
        }
    }

    /**
     * 获取所有统计到得数据
     * @throws Exception
     */
    public String printData() throws Exception
    {
        String rs = "statis error!   please check your code!";
        try
        {
            DmfTransactionDelegate.beginTransaction();
            rs = DmfStatistDelegate.printData();
            DmfTransactionDelegate.commit();
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
        return rs;
    }
}