How to get value of xml tags from a File

Hi Friends,

Sometime back I cam across situation where I had a very big file(it was log file actually) having multiple xml requests on multiple lines,so that means one xml request per line and I wanted to get values from one particular tag from each request.So I wrote program mentioned in below post,which gave me FileNames from each request.

Let us see now how we can get value of  xml tags from a big file.
Prerequisite :
IDE : Eclipse or any other IDE for java development.
JDK : I used JDK6
commons-lang.jar(I have used commons-lang-2.6.jar)

Step 1 : 

Create a new java project in eclipse as below :

Step 2 : 

Create package with name "com.gb.action".

Step 3 : 

Create Class TestTagValue 

Step 4 : 

Remove the above code and paste following code :

package com.gb.action;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;

import org.apache.commons.lang.StringUtils;

public class TestTagValue {

    public static void main(String args[]) {
        // Open the file
        FileInputStream fstream = null;
        try {
            fstream = new FileInputStream(
                    "C:/Users/testTagValue/abc.xml");
            BufferedReader br = new BufferedReader(new InputStreamReader(
                    fstream));
            String strLine;

            // Read File Line By Line
            while ((strLine = br.readLine()) != null) {
                String fileName = StringUtils.substringBetween(strLine,
                        "<FileName>", "</FileName>");
                // Print the content on the console
                System.out.println(fileName);
            }
            br.close();
        } catch (FileNotFoundException e2) {
            e2.printStackTrace();
        } catch (IOException e1) {
            e1.printStackTrace();
        }
    }
}

Step 5 : 

You will following compilation errors :

Step 6 : 

Add commons-lang jar on build path and errors will be gone.

Step 7 : 

Place  your abc.xml file at C:/Users/testTagValue or your preferred location(but same path you need to mention in the program above)

Sample Content of abc.xml :

<FileName>def.xml</FileName><DateTimeFile>20141126002523</DateTimeFile><DateTimeMessage>20141126002523</DateTimeMessage><MessageID>006743663</MessageID>
<FileName>ghi.xml</FileName><DateTimeFile>20141126011537</DateTimeFile><DateTimeMessage>20141126011537</DateTimeMessage><MessageID>006757690</MessageID>
<FileName>jkl.xml</FileName><DateTimeFile>20141126011535</DateTimeFile><DateTimeMessage>20141126011535</DateTimeMessage><MessageID>006757686</MessageID>
<FileName>mno.xml</FileName><DateTimeFile>20141126011538</DateTimeFile><DateTimeMessage>20141126011538</DateTimeMessage><MessageID>006757700</MessageID>

Step 8: 

Right click anywhere on the class and select Run As -> Java Application.

It will give you content of tags <FileName> in console.

Output :

def.xml
ghi.xml
jkl.xml
mno.xml

Note : If you want to have content of some other tag ,you just need to change the tag name in above program.

Any feedback ,suggestions ,questions on the post are welcome.