Extract a portion from a text-file

[Prabh]

Hi,
Could anyone tell me how to do this in Java, please.
I need to extract a portion of a file.

File:
================================================
line1
line2
line3
Property1 = value1\
value2\
value3

line4
line5
================================================

I'd like to extract the "Property-value" portion.
Could someone give me any pointers, please.

For what its worth, I'd do this Perl as:
while (<>) {
print if (/^Property1(.*)$/ .. /^$/) =~ /^\d+$/;
}

Thanks,
Prabh

 

[Roedy Green]

I'd like to extract the "Property-value" portion.
Could someone give me any pointers, please.

read it line by line the use Regex to find and match.

See http://mindprod.com/fileio.html for how to read line by line.

see http://mindprod.com/jgloss/regex.html for how to analyse the line.

 

[Weichao Wang]

import java.io.*;
.......
try {
BufferedReader f = new BufferedReader(
new FileReader(theFileName)
);
String line;
while ((line = f.readLine()) != null)
if (line.startsWith("Property"))
System.out.println(line);
} catch (Exception e) {
System.out.println(e.toString());
}
.......
I haven't tested it. The logic must be so.

Weichao