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PONeed Help fixing NullPointerException
 

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  1. PONeed Help fixing NullPointerException
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    <p>This is hangman. When I run the code I get a couple of null pointer exceptions and have no idea how to fix this. </p> <p>This is what the compile error says exactly:</p> <pre><code> Exception in thread "main" java.lang.NullPointerException at hangmanrevised.createGame(hangmanrevised.java:66) at hangmanrevised.&lt;init&gt;(hangmanrevised.java:35) at hangmanrevised.main(hangmanrevised.java:202) </code></pre> <p>Any help is appreciated.</p> <pre><code>import java.awt.*; import java.awt.event.*; import java.util.Random; import java.lang.reflect.Array; import javax.swing.*; public class hangmanrevised extends JFrame implements ActionListener { private int wrongs; private String right; private StringBuffer guess; private TextField Letter; private String message; private String information; private JButton button; private final int hung = 11; public hangmanrevised() { setSize(600,400); setLocationRelativeTo(null); setDefaultCloseOperation(EXIT_ON_CLOSE); setLayout(new FlowLayout()); ImageIcon background = new ImageIcon("nightsky.png"); TextField Letter = new TextField(); JLabel label = new JLabel("pick a Letter"); Button button = new Button("Enter"); add(label); add(button); add(Letter); button.addActionListener(this); createGame(); } public void createGame(){ wrongs = 0; String word = "school|java|programming|science|computer"; String[] temp; String delimiter = "\\|"; temp = word.split(delimiter); Random randomPicker = new Random(); int randomWord = randomPicker.nextInt(temp.length); right = new String(temp[randomWord]); char positions[] = new char[right.length()]; for (int i = 0; i &lt; right.length(); i++) { positions[i] = '-'; } String s = new String(positions); guess = new StringBuffer(s); Letter.setText(""); message=""; information = ""; repaint(); } public void paint(Graphics g) { super.paint(g); //g.drawImage(background, 0, 156, Color.green, Enter); int baseY = 350; g.setColor(Color.lightGray); g.drawRect(0, baseY,400,baseY); g.fillRect(0, baseY,400,baseY); g.setColor(Color.darkGray); //g.drawRect(250,50,125,50); //g.fillRect(250,50,125,50); if (wrongs &gt; 0){ g.drawLine(125,baseY,125,baseY-100); g.drawLine(123,baseY,123,baseY-100); } if (wrongs &gt; 1){ g.drawLine(110,baseY,125,baseY-15); g.drawLine(108,baseY,122,baseY-15); } if (wrongs &gt; 2){ g.drawLine(140,baseY,125,baseY-15); g.drawLine(138,baseY,122,baseY-15); } if (wrongs &gt; 3){ g.drawLine(125,baseY-100,175,baseY-100); g.drawLine(125,baseY-98,175,baseY-98); } if (wrongs &gt; 4){ g.drawLine(175,baseY-100,175,baseY-75); } if (wrongs &gt; 5){ g.drawOval(170,baseY-75,10,12); } if (wrongs &gt; 6){ g.drawOval(160,baseY-65,15,25); g.fillOval(160,baseY-65,15,25); } if (wrongs &gt; 7){ g.drawLine(150,baseY-65,170,baseY-60); } if (wrongs &gt; 8){ g.drawLine(173,baseY-60,193,baseY-65); } if (wrongs &gt; 9){ g.drawLine(155,baseY-30,170,baseY-45); } if (wrongs &gt; 10){ g.drawLine(173,baseY-45,193,baseY-30); } g.drawString( message, 60, baseY+25 ); g.drawString( information, 25, baseY+45 ); g.drawString( new String (guess), 110, 60); //listener(); } public void actionPerformed(ActionEvent e){ if (e.getSource() == button){ processTurn(); Letter.setText(""); repaint(); } } private void processTurn(){ String s, t; char a; s = Letter.getText(); a = s.charAt(0); if (!Character.isLetter(a)){ message="Letters only"; return; } if (s.length()&gt;1){ message="Enter 1 letter only"; return; } t = new String(guess); if (t.indexOf(s) != -1){ JOptionPane.showMessageDialog(null, "LETTER USED ALREADY"); return; } if (right.indexOf(s) == -1){ message=""; wrongs++; if (wrongs == hung){ JOptionPane.showMessageDialog(null, "YOU LOST!"); } return; } for (int i = 0; i &lt; right.length(); i++){ if (right.charAt(i) == a){ guess.setCharAt(i, a); } } t = new String(guess); if (t.indexOf('-') == -1){ JOptionPane.showMessageDialog(null, "YOU WIN!"); message="You win!"; return; } message=""; repaint(); } public static void main(String[] args) { hangmanrevised f = new hangmanrevised(); f.setVisible(true); } } </code></pre>
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    1. USAnthony Lagarrigue
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    1. COHow to debug: http://stackoverflow.com/questions/2140959/java-error-exception-in-thread-main-java-lang-nullpointerexception/2141013#2141013
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