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Start your free trialkeller greathouse
4,901 PointsI don't understand any of this
Help, I don't understand any of this and I don't think my code works. At all.
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;
lineNumber = get.lineNumber( firstLetter >m); then
{ System.out.printf("go to line 2"); } else { (firstLetter !>m) then
System.out.printf ("go to line 1"); }
/*
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;
}
}
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
Steven Parker
231,272 PointsHere's a few hints:
- the instructions say to make the function return either 1 or 2 — you won't need to print anything
- Java doesn't use a "then" keyword for conditionals — are you studying other languages at the same time?
- there's no
!>
operator — the opposite of>
is<=
- you haven't defined a "firstLetter", but you won't need it if you use the string method for isolating characters
- remember to quote literal characters — see the examples in the Example.java code
- you will only need one test, because if it fails you can assume the other condition