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PONULL Pointer exception trouble
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  1. PONULL Pointer exception trouble
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    copied!<p>So I'm making a <strong>PigLatin Converter</strong> and I'm having some <code>NullPointerException</code>. Now you might ask if I tried on my own to fx it and I my aswer to you is yes I have. Anyways here's my code: <strong>THE line CAUSING THE ERROR WILL END WITH "ERROR"</strong></p> <pre><code>package project.pkg16.pkg9; public class Project169_Data { private static String[] words; private static String pigLatinWords; public static void setWords( String input ) { words = input.split(" "); } public static String convertToPigLatin() { for (int i = 0; i &lt; words.length; i++) { String wordTemp = null; String word = words[i].toString(); char firstLetter = word.charAt(0); StringBuilder sb = new StringBuilder(word.toString()); sb.append( String.valueOf(firstLetter).toLowerCase() ); sb.deleteCharAt(0); sb.append("ay "); StringBuilder sb2 = new StringBuilder(wordTemp); LINE 24 ERROR sb2.append(sb.toString()); pigLatinWords = sb2.toString(); } return pigLatinWords; } } </code></pre> <p>And then here is the 2nd class: </p> <pre><code>package project.pkg16.pkg9; public class Project169_Main { public static Project169_Input project169_Input = new Project169_Input(); public static Project169_Data project169_Data = new Project169_Data(); public static void main(String[] args) { String userInput = Project169_Input.getInput(); project169_Data.setWords(userInput); String pigLatinString = project169_Data.convertToPigLatin(); LINE 14 ERROR } } </code></pre> <p>And finally class 3:</p> <pre><code>package project.pkg16.pkg9; import javax.swing.JFrame; import javax.swing.JOptionPane; public class Project169_Input { public static String getInput() { JFrame frame = new JFrame("English to Pig Latin"); String input = JOptionPane.showInputDialog(frame, "Enter the english words you wish to convert to Pig Latin."); return input; } //End of method... } //End of Class... </code></pre> <p>The error is: </p> <p>run:</p> <pre><code> Exception in thread "main" java.lang.NullPointerException at java.lang.StringBuilder.&lt;init&gt;(StringBuilder.java:92) at project.pkg16.pkg9.Project169_Data.convertToPigLatin(Project169_Data.java:24) at project.pkg16.pkg9.Project169_Main.main(Project169_Main.java:14) BUILD SUCCESSFUL (total time: 31 seconds) </code></pre>
 

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