Code to read a file and get the file with a certain pattern

package edu.scjp.regex;

import java.io.*;

import java.util.regex.*;

import java.util.Calendar;

import java.util.GregorianCalendar;

public class FindFiles {

     

      @SuppressWarnings("deprecation")

      public static void main(String args[]){

           

            // variable to hold the file data

            String data = null;

            String[] line = null;

           

            Calendar cal = new GregorianCalendar();

           

            int currentYear =  cal.get(Calendar.YEAR);

          int currentDate =  cal.get(Calendar.DATE);

            int currentMonth = cal.get(Calendar.MONTH);

           

            //String sCurrentDate = currentDate.t

            String currentDateFormat_1 = Integer.toString(currentMonth)+ Integer.toString(currentDate)+ Integer.toString(currentYear);

            String currentDateFormat_2 = Integer.toString(currentYear)+ Integer.toString(currentMonth)+ Integer.toString(currentDate);

           

            System.out.println(currentDateFormat_1);

            System.out.println(currentDateFormat_2);

           

            try {

                  // create a file reader handle

                  FileReader fileReader = new FileReader("C:\\view\\test.txt");

                 

                  BufferedReader bufferedReader = new BufferedReader(fileReader);

                 

                  while((data = bufferedReader.readLine())!= null)

                  {

                        line = data.split(",");

                       

                        for (int i = 0 ; i < line.length; i++)

                        {

                              Pattern pattern_1 = Pattern.compile("CTRAX_NL_SCAN_Roanoke_"+currentDateFormat_1);

                              Pattern pattern_2 = Pattern.compile("NEW_FORMATTED_ROANOKE_"+currentDateFormat_2);

                              Pattern pattern_3 = Pattern.compile("PAID_FORMATTED_ROANOKE_"+currentDateFormat_2);

                             

                              Matcher     matcher_1 = pattern_1.matcher(line[i]);

                              Matcher     matcher_2 = pattern_2.matcher(line[i]);

                              Matcher     matcher_3 = pattern_3.matcher(line[i]);

                       

                       

                        while(matcher_1.find())

                        {

                              System.out.println(line[i]);

                        }

                       

                        while(matcher_2.find())

                        {

                              System.out.println(line[i]);

                        }

                       

                        while(matcher_3.find())

                        {

                              System.out.println(line[i]);

                        }

                  }

                  }    

                 

                  }catch(IOException ioe) {

                  ioe.printStackTrace();

            }

     

      }

}

Code to Convert Date into dd/mm/yyyy Format

package com.prokarma.calendar;

import java.util.Calendar;

import java.util.GregorianCalendar;

public class CalendarString {

     

      public static void main(String[] args) {

      Calendar cal = new GregorianCalendar();

      String date = "";

      String month = "";

     

      int year = cal.get(Calendar.YEAR);

      int month_1 = cal.get(Calendar.MONTH);

      int date_1 = cal.get(Calendar.DATE);

     

      if ( date_1 < 10 )

            date = "0" + date_1;

      else

            date = Integer.toString(date_1);

      if ( month_1 < 10 )

            month = "0" + month_1;

      else

            month = Integer.toString(month_1);

      String currentDate =  date + "/" + month + "/" + year ;

     

      System.out.println("Current Date(dd/mm/yyyy): " + currentDate);

   }

}

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