cron과 같이 동작하는 java 프로그램

유닉스의 cron과 같이 특정한 시간에 어떠한 일을 할 수 있도록해주는 java 프로그램입니다. 이걸 가지고 1분 또는 10분마다 생성된 이미지를 Flickr에 올리면 끝!!
import java.util.*; import java.text.*; /** * @author Hong Chang Bum (hongiiv@gmail.com) * * TODO To change the template for this generated type comment go to * Window - Preferences - Java - Code Style - Code Templates * This application works like cron. * */ public class SystemBackup { public static void main(String[] args) { //TimeZone을 한국(KST)로 설정한다. final int millisPerHout = 60 * 60 * 1000; SimpleTimeZone timeZone = new SimpleTimeZone(9 * millisPerHout,"KST"); long lTime1 = 0; long lTime2 = 0; //long lMtime1 = 0; //long lMtime2 = 0; String strTime = ""; //String strOldDay = ""; //String strNewDay = ""; Date ntime; SimpleDateFormat dfDate = new SimpleDateFormat("yyyy-MM-dd HH:mm"); SimpleDateFormat dfTime = new SimpleDateFormat("HH"); SimpleDateFormat dfDir = new SimpleDateFormat("yyyyMMdd"); dfDate.setTimeZone(timeZone); dfTime.setTimeZone (timeZone); dfDir.setTimeZone(timeZone); //String BACKUP_DIR = "/data01/BackupDaily"; //String SRC_DIR = "/var/log"; //lMtime1 = 10000L; //10 second //lMtime2 = 20000L; //20 second try{ if(args.length < 2){ System.out.println("----------------------------------------------------"); System.out.println("Set parameter to execute backup"); System.out.println("Parameter is exection time and interval"); System.out.println(""); System.out.println("java SystemBackup time interval"); System.out.println(""); System.out.println(" 1) java SystemBackup 10 d"); System.out.println (" 2) java SystemBackup 22 w"); System.out.println(" 3) java SystemBackup 10 m"); System.out.println("----------------------------------------------------"); } else{ System.out.println("----------------------------------------------------"); System.out.println("System Backup Start Up!!"); System.out.println(""); //3600 if(args[1].equals("d")){ lTime1 = 3600000L; //1hour lTime2 = 600000L; //10min }else if(args[1].equals("w")){ lTime1 = 3600000*12; //12hour lTime2 = 600000L; }else if(args[1].equals("m")){ lTime1 = 3600000*30; //30hour lTime2 = 600000L; } // while (true) { ntime = new Date(); strTime = String.valueOf(dfTime.format(ntime)); //debug System.out.println("current time is : " + strTime); //first arguemnt is 24hour format time if(strTime.equals(args[0])){ // //Runtime.getRuntime().exec("/data01/backup_script.sh"); Runtime.getRuntime().exec("/data01/backup_script_01.sh"); System.out.println("----------------------------------------------------"); System.out.println("Batch backup successed!!"); System.out.println("Batch Date ; " + String.valueOf(dfDate.format(ntime))); System.out.println("----------------------------------------------------"); //원하는 시간이면 백업을 수행하고 일/주/월 단위로 정해진 시간을 sleep한다. Thread.sleep(lTime1); }else{ System.out.println("sleep start"); //System.out.println(lMtime1); //10분간격으로 시간 체크 Thread.sleep(lTime2); //Thread.sleep(lMtime1); System.out.println("sleep end"); } } } } catch (Exception err){ System.out.println("Excepitn Error :[" + err + "]"); } finally{ System.out.println ("shutdown~~"); System.out.println("----------------------------------------------------"); } } }