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Java Java Objects (Retired) Creating the MVP Comparing Characters

David Barnes
David Barnes
919 Points
Posted by David Barnes
David Barnes
919 Points

error: entered Zimmerman and expected to get back line2 as Z comes after M

Why did I get a 'entered Zimmerman and expected to get back line 2 as 2 comes after M' error message? I entered the following code inside the method: int line = 0; if(lastName.indexOf(0) <= 'M'){ line=1; return line; } if(lastName.indexOf(0) > 'M'){ line=2; }

return 0;
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;
    if(lastName.indexOf(0) <= 'M'){
      line=1;
      return line;
    }
    if(lastName.indexOf(0) > 'M'){
      line=2;
    }

    return 0;
  }

}

2 Answers

deckey
deckey
14,630 Points
deckey
deckey
14,630 Points

Hi David, your mistake is at lastName.indexOf(0) method... String.indexOf(Char) method is searching for a first occurence of that letter within a string. So, in your case, lastName.indexOf(0) is actually searching for zero which is wrong to begin with.

What you wanted to use I guess is String.charAt(Index) method.

good luck! Deckey

deckey
deckey
14,630 Points
deckey
deckey
14,630 Points

Also, you won't need two 'if' statements, maybe if - else could do the trick. good luck!

Matthew Barrus
Matthew Barrus
16,731 Points
Matthew Barrus
Matthew Barrus
16,731 Points

also, when line equals 2, that is never being returned. It is instead returning 0. You could change "return 0;" to "return line;" and remove the return statement in the first if. Or to make it real succinct: 

public class ConferenceRegistrationAssistant {

public int getLineFor(String lastName) {
    if (lastName.charAt(0) <= 'M') return 1;

    return 2;
}