import java.io.BufferedReader;
import java.io.FileReader;

public class Test {
   public static void main(String[] args) {
      int found=0;
      try {
         BufferedReader reader = new BufferedReader(new FileReader("c:\\myfile.txt"));
	 String line;
	 while ((line = reader.readLine()) != null) {
//	    if (line.contains("CP_NG")) {
//	       found++;
//          }
            if (line.matches(".*CP_NG.*")) {
	       found++;
	    }
	 }
	 reader.close();
      }
      catch (Exception e) {
         e.printStackTrace();
      }
      System.out.println("anzahl treffer:"+found);
   }
}