Comparing two files and extract the difference

[trkece]

Hi all,

I want code/soltn for comparing two files and extract the difference write it to the new file

Line1 in file1 compares with all the lines in file2 and similarly for all the lines ....
it's not line by line, each line in file1 compares it to the all the lines in file2


Thanx
RK

[Junky]

Hi all,

I want code/soltn

No problems. You relax and put your feet up while I write the code for you.

[trkece]

if u can provide code that wil be fine dats y i have mentioned solution also

[Zack]

I'm sure someone here will be happy to provide all the code for you. No one on this forum has that kind of time to put toward your project.

If you want to actually learn to write the code, then start with some tutorials and come here with specific questions.

[trkece]

import java.io.*;
public class FileExample {
public static void main(String[] args) throws IOException {

String actualFile = "write.txt";
String expectedFile = "kk.txt";

String descptnFile = "Write2.txt";

try{

// Create FileReader & Writer Objects.

FileReader actualFileReader = new FileReader(actualFile);

FileReader expctdFileReader = new FileReader(expectedFile);

FileWriter resultDesc = new FileWriter(descptnFile);



// Create Buffered Object.

BufferedReader actlFileBufRdr = new BufferedReader(actualFileReader);
BufferedReader expcFileBufRdr = new BufferedReader(expctdFileReader);
BufferedWriter resultFileBufWrtr = new BufferedWriter(resultDesc);
// Get the file contents into String Variables.
String actlFileContent = actlFileBufRdr.readLine();

String expctdFileContent = expcFileBufRdr.readLine();



// Compare the Contents of the files.
String startOfComparision = "---------START----------";

//resultFileBufWrtr.write(startOfComparision);

// resultFileBufWrtr.newLine();

System.out.println(startOfComparision);



boolean isDifferent = false;

int lineNumber = 1;

if (actlFileContent != null || expctdFileContent != null) {


// Check whether Actual file contains data or not

while((actlFileContent!=null) ){

// Check whether Expected file contains data or not

if (((expctdFileContent )!=null)) {

// Check whether both the files have same data in the lines

if (!actlFileContent.equals(expctdFileContent)) {

resultFileBufWrtr.write(""+actlFileContent+":"+exp ctdFileContent);

resultFileBufWrtr.newLine();

System.out.println("Difference in Line "+lineNumber+" :- Actual File contains :"+actlFileContent+", Expected File Contains : "+expctdFileContent);

isDifferent = true;

}

lineNumber = lineNumber+1;
expctdFileContent= expcFileBufRdr.readLine();

}
else{

resultFileBufWrtr.write(""+actlFileContent+":"+exp ctdFileContent);

resultFileBufWrtr.newLine();

System.out.println("Difference in Line "+lineNumber+" :- Actual File contains :"+actlFileContent+", Expected File Contains - "+expctdFileContent);

isDifferent = true;

lineNumber = lineNumber+1;

}

actlFileContent=actlFileBufRdr.readLine();

}

// Check for the condition : if Actual File has Data & Expected File doesn't contain data.

while ((expctdFileContent!=null)&&(actlFileContent==null )) {

resultFileBufWrtr.write(""+actlFileContent+":"+exp ctdFileContent);

resultFileBufWrtr.newLine();

System.out.println("Difference in Line "+lineNumber+" :- Actual File contains :"+actlFileContent+", Expected File Contains - "+expctdFileContent);

isDifferent = true;
lineNumber = lineNumber+1;

expctdFileContent= expcFileBufRdr.readLine();

}

}
else{

// Mention that both the files don't have Data.

resultFileBufWrtr.write(""+actlFileContent+":"+exp ctdFileContent);
resultFileBufWrtr.newLine();

System.out.println("Difference in Line "+lineNumber+" :- Actual File contains :"+actlFileContent+", Expected File Contains - "+expctdFileContent);

isDifferent = true;

}



// Check is there any difference or not.

String endOfComparision = "-----------END----------";

if (isDifferent) {

//resultFileBufWrtr.append(endOfComparision);

System.out.println(endOfComparision);

}
else{

resultFileBufWrtr.append("No difference Found");

resultFileBufWrtr.newLine();

resultFileBufWrtr.append(endOfComparision);



System.out.println("No difference Found");

System.out.println(endOfComparision);

}

actualFileReader.close();

expctdFileReader.close();

resultFileBufWrtr.close();

actlFileBufRdr.close();

expcFileBufRdr.close();

}

catch( FileNotFoundException e )
{

e.printStackTrace();

}

}



}


I wrote this code and pls tell me the modifications in this......

It's not printing difference b/w two files