Posts

Showing posts from July, 2016

Compare Text in 2 files and write the difference in a new file

Here I am reading 2 files, first file data is added to list.second file data is added to another list.Then converting 2 list to 2 Hashset. Then i am removing 1st hashset from the 2nd one.In this process all the common string will get removed and the new Hashset will have the difference data.
/**
 * Getting 2 text files with single column data in each, need to find out the difference and write the difference between the 2 files to a new file.
 */
public class CompareTwoFiles {
public static List readcsv(String filename) {
List l=new ArrayList();
String tempstr = "";
String dataStr = "";
int rownum = 0;
try {
BufferedReader br = new BufferedReader(new FileReader(filename));
try {
String line = "";
while ((line = br.readLine()) != null) {
l.add(line);
//System.out.println(dataStr);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return l;
}

   public…