public class MySearchClass {

  private List<String> mnTwins;
  private List<String> allStars;

  public static void main(String[] args) throws Exception {
      MySearchClass searchClass = new MySearchClass();
      searchClass.compareFiles(args);
  }
  
  private void compareFiles(String[] args) throws Exception {
    mnTwins = openAndReadFile(args[0]);
    allStars = openAndReadFile(args[1]);
    
    Collections.sort(mnTwins);
    Collections.sort(allStars);
    int twinsIndex = 0;
    int allStarIndex = 0;
    
    while(hasEntries(twinsIndex, allStarIndex)){
      String twinsPlayer = mnTwins.get(twinsIndex);
      String allStarName = allStars.get(allStarIndex);
      if(nameMatch(twinsIndex, allStarIndex)){
          System.out.println(twinsPlayer + "\t"+ allStarName);
          allStarIndex++;
      } else if(twinsPlayer.compareTo(allStarName) < 0) {
        twinsIndex++;
      } else {
        allStarIndex++;
      }
    }
  }

  private boolean nameMatch(int termedIndex, int activeIndex) {
    return allStars.get(activeIndex).startsWith(mnTwins.get(termedIndex));
  }

  private boolean hasEntries(int twinsIndex, int allStarIndex) {
    return twinsIndex < mnTwins.size() && allStarIndex < allStars.size();
  }

  private static List<String> openAndReadFile(String fileName) throws Exception {
    FileReader fileReader = new FileReader(fileName);
    BufferedReader bufferedReader = new BufferedReader(fileReader);
    
    String line = bufferedReader.readLine();
    List<String> names = new ArrayList<String>();
    while(line  != null){
      names.add(line);
      line = bufferedReader.readLine();
    }
    return names;
  }
}