//using java package quetion5; import java.util.LinkedList; import java.util.NoS

Question

 //using java package quetion5;  import java.util.LinkedList; import java.util.NoSuchElementException;  /**  *    This program has two example methods. Both throw exceptions when you run the code.    Fix by adding a try-catch block in each method.  Don't modify any of the existing code. Here, you will be adding new code.    For the printLanguageList method, add try-catch statements.  In the catch block, print a message that the LinkedList is empty. You don't need to do anything else, just let the method return.    For the wordCount method, add try-catch statements so the NullPointerException thrown when the list is empty, is caught.  In the catch block, return 0. So if the sentence is null, your method will return 0.    */ public class Question_5_Add_Exception_Handling {      public static void main(String[] args) {                  Question_5_Add_Exception_Handling q5 = new Question_5_Add_Exception_Handling();                  // Test the printLanguageList() method         q5.printLanguageList();                  // Test the wordCount() method         String sentence1 = "This is an example sentence.";         String sentence2 = null;         int words1 = q5.wordCount(sentence1);         int words2 = q5.wordCount(sentence2);              System.out.println(sentence1 + " has this many words: " + words1);         System.out.println(sentence2 + " has this many words: " + words2);              }          /* Adds some example programming languages to a LinkedList, and then prints them in reverse order.      */          //Start of printLanguageList. Don't change or move this comment. The Autograder needs it.          public void printLanguageList() {                  // TODO stop this code crashing by adding exception handling to the method.         // Don't modify any of the code or change what is printed.         // Add a try-catch block to catch the NoSuchElementException that's thrown.         // Your code should still print all the languages, but not crash.                  LinkedList<String> languages = new LinkedList<String>();                  languages.push("Python");         languages.push("Swift");         languages.push("C#");              while (true) {             String             System.out.println(oneLanguage);         }     }          //End of printLanguageList. Don't change or move this comment. The Autograder needs it.               /* A very simple word count function.          This function should return the number of words in a string.     For this program, each word is assumed to be separated by a single space character.     If the String sentence is null, this method should return 0.          Counting words in real-world applications can be a much trickier     problem, with various special cases to consider.     For example, is "sugar-free" one word, or two? How many words in "D. B. Cooper" ? */          //Start of wordCount. Don't change or move this comment.  The Autograder needs it.          public int wordCount(String sentence) {              // TODO This code throws a NullPointerException if the String sentence is null.         // Add a try-catch block to catch the NullPointerException, so and return 0 if the String sentance is null.         // Don't modify any of the code that's here already.              String[] words = sentence.split(" ");         return words.length;     }          //End of wordCount. Don't change or move this comment.  The Autograder needs it.           } 

Explanation / Answer

public void printLanguageList() {

LinkedList<String> languages = new LinkedList<String>();

languages.push("Python");

languages.push("Swift");

languages.push("C#");

try {

while (true) {

String>