工具类：DateUtils：long型与日期时间型、String相互转换

package utils;


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


public class DateUtils {

    
    public static Date getTimeYMDHHmmss(long longtime) throws ParseException {
        SimpleDateFormat sd = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        //long转Date
        Date date = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse(sd.format(new Date(longtime)));
        return date;

    }

    
 public static String getcst(Date da) throws ParseException {
     SimpleDateFormat sim1 = new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy", Locale.US);
     SimpleDateFormat sim2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
     String s1 = String.valueOf(da);
     Date dates = sim1.parse(s1);
     String f = sim2.format(dates);
     return f;

    }
    
    public static Long getLongDate(String formatTime) {
        long time = 0;
        try {
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            Date parse = sdf.parse(formatTime);

            time = parse.getTime();
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return time;
    }

    
    public static Date StringToDate(String str) throws ParseException{
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date date = (Date) formatter.parse(str);
        return date;
    }
    
    public static long curTimeMillis() {
                return System.currentTimeMillis();
           }


}