JAVA 时间工具类

package org.loushang.workflow.util;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import org.loushang.next.i18n.ResourceBundle;
import org.loushang.workflow.engine.common.BspAddDate;

public class TimeUtils
{

    public TimeUtils()
    {
    }

    public static String getCurrentDateTime()
    {
        return sdf.format(Calendar.getInstance().getTime());
    }

    public static String getCurrentDate()
    {
        return sdf.format(Calendar.getInstance().getTime());
    }

    public static String formatTime(long l)
    {
        return sdf.format(new Date(l));
    }

    public static long parseLong(String s)
    {
        long l = 0L;
        if(s != null && !"".equals(s))
            try
            {
                Date date = sdf.parse(s);
                l = date.getTime();
            }
            catch(ParseException parseexception) { }
        return l;
    }

    public static long calcTimeDiff(String s, String s1)
    {
        return parseLong(s1) - parseLong(s);
    }

    public static String convertMillsTimeDiffToDisplayTimeStr(long l)
    {
        long l1 = 0L;
        long l2 = 0L;
        long l3 = 0L;
        long l4 = 0L;
        boolean flag = false;
        boolean flag1 = false;
        l /= 1000L;
        l1 = l / 86400L;
        l2 = l / 3600L - l1 * 24L;
        l3 = l / 60L - l1 * 1440L - l2 * 60L;
        l4 = l - l1 * 86400L - l2 * 3600L - l3 * 60L;
        StringBuffer stringbuffer = new StringBuffer();
        if(l1 > 0L)
        {
            stringbuffer.append(l1);
            stringbuffer.append(ResourceBundle.getPackageBundle("bpm.common").getLocaleMsg("BPM.COMMON.006", "\u5929"));
            flag = true;
        }
        if(l2 > 0L || l2 == 0L && flag)
        {
            stringbuffer.append(l2);
            stringbuffer.append(ResourceBundle.getPackageBundle("bpm.common").getLocaleMsg("BPM.COMMON.007", "\u5C0F\u65F6"));
            flag1 = true;
        }
        if(l3 > 0L || l3 == 0L && flag1)
        {
            stringbuffer.append(l3);
            stringbuffer.append(ResourceBundle.getPackageBundle("bpm.common").getLocaleMsg("BPM.COMMON.008", "\u5206"));
        }
        if(l4 >= 0L)
        {
            stringbuffer.append(l4);
            stringbuffer.append(ResourceBundle.getPackageBundle("bpm.common").getLocaleMsg("BPM.COMMON.009", "\u79D2"));
        }
        return stringbuffer.toString();
    }

    public static long getLimitTime(String s, String s1, int i)
    {
        BspAddDate bspadddate = new BspAddDate();
        return bspadddate.getBspDateTime(s1, new Date(parseLong(s)), i);
    }

    public static long getWarnTime(String s, String s1, int i, int j)
    {
        BspAddDate bspadddate = new BspAddDate();
        return bspadddate.getBspDateTime(s1, new Date(parseLong(s)), i - j);
    }

    public static String getLimitTimeStr(int i, String s)
    {
        StringBuffer stringbuffer = new StringBuffer();
        stringbuffer.append(i);
        String s1 = "";
        if("Y".equals(s))
            s1 = ResourceBundle.getPackageBundle("bpm.common").getLocaleMsg("BPM.COMMON.010", "\u5E74");
        else
        if("M".equals(s))
            s1 = ResourceBundle.getPackageBundle("bpm.common").getLocaleMsg("BPM.COMMON.011", "\u6708");
        else
        if("D".equals(s))
            s1 = ResourceBundle.getPackageBundle("bpm.common").getLocaleMsg("BPM.COMMON.006", "\u5929");
        else
        if("h".equalsIgnoreCase(s))
            s1 = ResourceBundle.getPackageBundle("bpm.common").getLocaleMsg("BPM.COMMON.007", "\u5C0F\u65F6");
        else
        if("m".equals(s))
            s1 = ResourceBundle.getPackageBundle("bpm.common").getLocaleMsg("BPM.COMMON.008", "\u5206");
        else
        if("s".equals(s))
            s1 = ResourceBundle.getPackageBundle("bpm.common").getLocaleMsg("BPM.COMMON.009", "\u79D2");
        stringbuffer.append(s1);
        return stringbuffer.toString();
    }

    public static long getLimitTimeInt(int i, String s)
    {
        long l = 0L;
        if("Y".equals(s))
            l = i * 365 * 24 * 60 * 60 * 1000;
        else
        if("M".equals(s))
            l = i * 30 * 24 * 60 * 60 * 1000;
        else
        if("D".equals(s))
            l = i * 24 * 60 * 60 * 1000;
        else
        if("h".equalsIgnoreCase(s))
            l = i * 60 * 60 * 1000;
        else
        if("m".equals(s))
            l = i * 60 * 1000;
        else
        if("s".equals(s))
            l = i * 1000;
        return l;
    }

    private static final SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd HH:mm:ss");

}