Thread: Display output from a file using regular expression

Purchase Items
Order 458
Invoice No

Date Bill noBill DateDescriptionPurpose Qty Rate/unitAmt Remark
12/05/05 152 11/06/08 abc xyz 12 15 250 Abcef
11/05/05 2561 12/07/08 wtc prvn 25 2 2530 good
12/05/05 8695 05/05/08 pen Abcd 12 21 24 Bad
12/05/08 8956 06/05/08 Pencil Drawing 5 2 10 good

Team member: 5 Authorised By: praveen
Employee ID & Signature: 1478 praveen Signature
Team Leader: abcd Accountant:ramu
Received Date:12/05/08

I am in need of

12/05/05 152 11/06/08 abc xyz 12 15 250 Abcef
11/05/05 2561 12/07/08 wtc prvn 25 2 2530 good
12/05/05 8695 05/05/08 pen Abcd 12 21 24 Bad
12/05/08 8956 06/05/08 Pencil Drawing 5 2 10 good

But as per My code out put is this format

12/05/05 152 11/06/08 abc xyz 12 15 250 Abcef
11/05/05 2561 12/07/08 wtc prvn 25 2 2530 good
12/05/05 8695 05/05/08 pen Abcd 12 21 24 Bad
12/05/08 8956 06/05/08 Pencil Drawing 5 2 10 good
Team member: 5 Authorised By: praveen
Employee ID & Signature: 1478 praveen Signature
Team Leader: abcd Accountant: ramu
Received Date:12/05/08

My code

class purchasevchr {

public static String inputFile = "purchase.txt";//Input file
purchase pfr = new purchase();

public void formatFile() {
{

try {
FileInputStream in = new FileInputStream(inputFile);
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String strLine;

String regEx1 = "(\\d+/)";//date format is matched here
Pattern regEx1P = Pattern.compile(regEx1);


while ((strLine = br.readLine()) != null) {

System.out.println(strLine);//line by line printing
}

} catch (Exception e) {
System.out.println("Exception " + e);
}
}

}

public class sample{

public static void main(String args[]){
purchasevchr ob=new purchasevchr();
ob.formatFile();
}
}

i tried with the code given by you..

/*


import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class expense1 {

public static String inputFile = "expense.txt";

public void formatFile() {

try
{
FileInputStream in = new FileInputStream(inputFile);
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String strLine;

String regEx1 = "([0-9]/)";
Pattern regEx1P = Pattern.compile(regEx1);

System.out.println("Date " + "Bill " + "noBill" + "DateDescription" + " Purpose" +
"Qty" + "Dist " + "Rate/unitAmt" + "Remark");

while((strLine = br.readLine())!= null)
{
Matcher match1 = regEx1P.matcher(strLine);

if (match1.find())
{
System.out.println(strLine);
}

//System.out.println(strLine);
}
}
catch (Exception e)
{
System.out.println("Ouch! " + e);
}
}

public static void main(String[] args) {
expense1 exp = new expense1();
exp.formatFile();

}
}

output i am getting is:

Date Bill noBillDateDescription PurposeQtyDist Rate/unitAmtRemark
12/05/05 152 11/06/08 abc xyz 12 15 250 Abcef
11/05/05 2561 12/07/08 wtc prvn 25 2 2530 good
12/05/05 8695 05/05/08 pen Abcd 12 21 24 Bad
12/05/08 8956 06/05/08 Pencil Drawing 5 2 10 good
Received Date:12/05/08

at the end i am also getting the "Received Date:12/05/08".i dnt want this

can you help me in this..

thanks in advance.