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Java Java Objects Creating the MVP Conference Registration Assistant

can someone help me with this please... I dont even know where to begin..

I cant even work out what they are asking for... this is a big step up from the other tasks.. can someone help me with how to structure this from the beginning..

thanks

ConferenceRegistrationAssistant.java
public class ConferenceRegistrationAssistant {

  /**
   * Assists in guiding people to the proper line based on their last name.
   *
   * @param lastName The person's last name
   * @return The line number based on the first letter of lastName
   */ 

   public int getLineNumberFor(String lastName) {
    int lineNumber = 0;
         ConferenceRegistrationAssistant assistant = new ConferenceRegistrationAssistant();
             lineNumber = assistant.getLineNumberFor();


                if ()


     /*
      lineNumber should be set based on the first character of the person's last name
      Line 1 - A thru M
      Line 2 - N thru Z

     */
    return lineNumber;
  }

}
Example.java
public class Example {

  public static void main(String[] args) {
    /*
      IMPORTANT:  You can compare characters using <, >. <=, >= and == just like numbers
     */
    if ('C' < 'D') {
      System.out.println("C comes before D");
    }

    if ('B' > 'A') {
      System.out.println("B comes after A");
    }

    if ('E' >= 'E') {
      System.out.println("E is equal to or comes after E");
    }

    // This code is here for demonstration purposes only...
    ConferenceRegistrationAssistant assistant = new ConferenceRegistrationAssistant();
    /*
      Remember that there are 2 lines.
      Line #1 is for A-M
      Line #2 is for N-Z
     */
    int lineNumber = 0;
    /*
      This should set lineNumber to 2 because
      The last name is Zimmerman which starts with a Z.
      Therefore it is between N-Z
     */
    lineNumber = assistant.getLineNumberFor("Zimmerman");

    /*
      This method call should set lineNumber to 1, because 'A' from "Anderson" is between A-M.
     */
    lineNumber = assistant.getLineNumberFor("Anderson");

    /*
      Likewise Charlie Brown's 'B' is between 'A' and 'M', so lineNumber should be set to 1
     */
    lineNumber = assistant.getLineNumberFor("Brown");
  }

}

1 Answer

Tony Gemenie
Tony Gemenie
3,781 Points

Alright man here we go... what you need to do is compare the letters using <, >, =. You're able to do this because Java uses ASCI coding to give back a number when you put in a letter, So Á = 65, Z=97, a=98... Ok so now we want to compare where those groups go. I'd do something like this

char c = lastName.startsWith().toUpperCase;
if( c >= 'A' && c<= 'M') {
  lineNumber =  1;
}
if ( c >= 'N' && c<= 'Z') {
  lineNumber = 2;
}
return lineNumber;