How do I put them in line??

Hi, Dor.

How do I put the people in line 1 and line 2

You don't need to do that, this method getLineFor only determines whether a given lastName should belong to Line 1 or Line 2.

The Challenge gives you a hint. chars can be compared using the > and < symbols. For instance 'B' > 'A' and 'R' < 'Z', that, combines with the comments written on the code template, it's pretty good indication that you should probably use the charAt() method on String class to determine whether that particular character is less than 'M'.

public class ConferenceRegistrationAssistant {

  public int getLineFor(String lastName) {
    /* If the last name is between A thru M send them to line 1
       Otherwise send them to line 2 */
    int line = 0;

    if (lastName.charAt(0) < 'M') {  // compare if the first letter of lastName is less than M
      line = 1;
    } else {
      line = 2;
    }

    return line;
  }

}

Alternatively, you may write the whole if ... else clause in its shorthand form by using the ternary operator, if you've learned them during the lectures.

public class ConferenceRegistrationAssistant {

  public int getLineFor(String lastName) {
    /* If the last name is between A thru M send them to line 1
       Otherwise send them to line 2 */
    return (lastName.charAt(0) < 'M') ? 1 : 2;  // ternary operator
  }
}

Hope it helps.