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Java Java Objects (Retired) Creating the MVP Comparing Characters

Posted by Mark John
Mark John
Courses Plus Student 771 Points

java challenge question help

this is the question ==>i have modeled an assistant for a tech conference. Since there are so many attendees, registration is broken up into two lines. Lines are determined by last name, and they will end up in line 1 or line 2. Please help me fix the getLineFor method.

NEW INFO: chars can be compared using the > and < symbols. For instance 'B' > 'A' and 'R' < 'Z'........plz i need your help

ConferenceRegistrationAssistant.java 
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;
    return line;
  }

}

2 Answers

Grigorij Schleifer
Grigorij Schleifer
10,365 Points
Grigorij Schleifer
Grigorij Schleifer
10,365 Points

Hi Mark,

look here:

public class ConferenceRegistrationAssistant {

  public int getLineFor(String lastName) {
// the method takes the last name as argument 
// and you need the first character of the last name 
// so you can use the charAt() method 
// inside () of charAt you need to tell the compiler which place (index) of the String you need to look at
// the index is 0, means first place of your name or name of the attendee

    int line = 0;
// you need a variable for the line number
// you can change the number of the line, depending on the first character of the &quot;lastName&quot;

    if (lastName.charAt(0) > 'M') {
// here you are looking at the first character
// (0) is the first char, because String lastName is a concatenation of chars
// and this concatenation is 0 based
// the first character is on place (0)
// the second character of the would be  lastName.charAt(1) and so on ...
::::::::::::::::::::::::::::::::::

// so the if statement is looking:
// if the char at place 0 (first character) is greater then 'M' then 
// line = 2
      line = 2;
    } else {
// if not greater then `M``
      line = 1;
    }
    return line;
// return the number of the line
  }
}

Makes sense?

Grigorij

Mark John
PLUS
Mark John
Courses Plus Student 771 Points
Mark John
Mark John
Courses Plus Student 771 Points

thanks! i appreciate1