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POFirst, last and sometime middle name detection Java
 

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  1. POFirst, last and sometime middle name detection Java
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    <p>I am trying to write a code to give off the user's name in different formats after they enter it. However, if a user does not have a middle name, the system should print that there was an error. I have it so it works perfectly if the user enters three names but does not work if the user enters two names. Here is my code:</p> <pre><code>import java.util.Scanner; public class Assignment3 { public static void main(String[] args) { String fullName; Scanner in = new Scanner(System.in); System.out.print ("What are your first, middle, and last names? "); fullName = in.nextLine(); System.out.println(fullName); if (fullName.contains(" ")) { String[] nameParts = fullName.split(" "); String firstInitial = nameParts[0].substring(0,1).toUpperCase(); String secondInitial = nameParts[1].substring(0,1).toUpperCase(); String thirdInitial = nameParts[2].substring(0,1).toUpperCase(); if (nameParts[2].isEmpty()) { System.out.println("No Middle Name Detected"); } else { System.out.println ("Your initials are: " + firstInitial + secondInitial + thirdInitial); String lastVariationOne = nameParts[2].substring(0, nameParts[2].length()); lastVariationOne = lastVariationOne.toUpperCase(); String firstVariationOne = nameParts[0].substring(0, nameParts[0].length()); firstVariationOne = firstVariationOne.substring(0,1).toUpperCase() + firstVariationOne.substring(1, nameParts[0].length()); System.out.println("Variation One: " + lastVariationOne + ", " + firstVariationOne + " " + secondInitial + "."); String lastVariationTwo = nameParts[2].substring(0, nameParts[2].length()); lastVariationTwo = lastVariationTwo.substring(0,1).toUpperCase() + lastVariationTwo.substring(1, nameParts[2].length()); System.out.println("Variation Two: " + lastVariationTwo + ", " + firstVariationOne); } } else { System.out.println("Wrong. Please enter your name properly."); } } } </code></pre>
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    1. COIf the user only enters two names, then the length of the `nameParts` array will only be 2, not 3...
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    2. COMy father doesn't have a middle name, does that make him an error?
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    3. COWhat are you having trouble with? If the user does not supply a middle name, nameParts[2] will throw an ArrayIndexOutOfBounds, probably.
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