How to Measure Code Lines in a Project (cursory)

Just change projectFolderPath variable's value

import java.io.File;
import java.io.FileFilter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.LineNumberReader;

public class LineCounter {

private static String projectFolderPath = "/home/anyuser/projectFolder"; //"C:\\projectFolder";

private static int totalLineCount = 0;

public static void main(String[] args) {
 File projectFolder = new File(projectFolderPath);
 lineCountFromFile(projectFolder);
 System.out.println(totalLineCount);

}

public static int lineCountFromFile(File file) {

 int linecount = 0;

 if (file.isFile() && file.canRead() && !file.isHidden()) {
  try {
   FileReader fr = new FileReader(file);

   LineNumberReader ln = new LineNumberReader(fr);

   while (ln.readLine() != null) {
    linecount++;
   }

   ln.close();
   fr.close();

  } catch (FileNotFoundException e) {
   e.printStackTrace();
  } catch (IOException e) {
   e.printStackTrace();
  }

 } else {

  File[] files = file.listFiles(new LineCounter.ProjectFileFilter());

              for (int i = 0; i < files.length; i++) {
    lineCountFromFile(files[i]);
   }

 }
 System.out.println(file.getAbsoluteFile() +"'s line count \t"+ linecount);
 totalLineCount += linecount;
 return linecount;
}

static class ProjectFileFilter implements FileFilter {

 private final String[] okFileExtensions = new String[] { "java",
   "jspx", "jspa","xhtml", "xml" };

 @Override
 public boolean accept(File file) {
  for (String extension : okFileExtensions) {
   if (file.getName().toLowerCase().endsWith(extension)
     || file.isDirectory()) {
    return true;
   }
  }
  return false;
 }
}
}