title: NullPointerException when accessing array of JTextAreas
body: <p>I'm making an assignment planner, where one enters the assignment for the day in a JTextArea. I made the JTextAreas static, so I could access them outside the class. To clean up my code, I decided to use for loops and put the JTextAreas into static instance variable- arrays. But, when I try to access a JTextArea through an array, I get a NullPointerException. Here is an example of the declaration of a JTextArea:</p>
  
  <pre><code>static JTextArea MondayEng;
  </code></pre>
  
  <p>The arrays (one per subject) are declared as so:</p>
  
  <pre><code>static JTextArea[] Eng =  new JTextArea[]{
      MondayEng,
      TuesdayEng,
      WednesdayEng,
      ThursdayEng,
      FridayEng
  };
  </code></pre>
  
  <p>And then there is a <code>JTextArea[][]</code> which contains the arrays:</p>
  
  <pre><code>static JTextArea[][] subjs = new JTextArea[][] {Eng, Hist, Math, Sci, Lang};
  </code></pre>
  
  <p>The JTextAreas are instantiated inside the JFrame (Called PWin), like this:</p>
  
  <pre><code>MondayEng = new JTextArea();
  MondayEng.setBounds(664, 68, 153, 100);
  contentPane.add(MondayEng);
  </code></pre>
  
  <p>I'll try to get the contents of the JTextAreas like this:</p>
  
  <pre><code>for (int i = 0; i &lt; PWin.subjs.length; i++) { // Iterate through subjects
          String sub = subjects[i]; // Store the current subject in a variable
          for (int y = 0; y &lt; days.length; y++) { // Iterate through days in week             
              String day = days[y]; // Store the current day in a variable                
              String str = PWin.subjs[i][y].getText(); // Get the text of the JTextArea currently selected, plop it in a string
  </code></pre>
  
  <p>The this is exception when saving files:</p>
  
  <pre><code>Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
      at PSave.&lt;init&gt;(PSave.java:19)
      at PWin$1.actionPerformed(PWin.java:262)
      at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2028)
      at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2351)
      at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
      at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
      at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
      at java.awt.Component.processMouseEvent(Component.java:6373)
      at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
      at java.awt.Component.processEvent(Component.java:6138)
      at java.awt.Container.processEvent(Container.java:2085)
      at java.awt.Component.dispatchEventImpl(Component.java:4735)
      at java.awt.Container.dispatchEventImpl(Container.java:2143)
      at java.awt.Component.dispatchEvent(Component.java:4565)
      at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4621)
      at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4282)
      at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4212)
      at java.awt.Container.dispatchEventImpl(Container.java:2129)
      at java.awt.Window.dispatchEventImpl(Window.java:2478)
      at java.awt.Component.dispatchEvent(Component.java:4565)
      at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:679)
      at java.awt.EventQueue.access$000(EventQueue.java:85)
      at java.awt.EventQueue$1.run(EventQueue.java:638)
      at java.awt.EventQueue$1.run(EventQueue.java:636)
      at java.security.AccessController.doPrivileged(Native Method)
      at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
      at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
      at java.awt.EventQueue$2.run(EventQueue.java:652)
      at java.awt.EventQueue$2.run(EventQueue.java:650)
      at java.security.AccessController.doPrivileged(Native Method)
      at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
      at java.awt.EventQueue.dispatchEvent(EventQueue.java:649)
      at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
      at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
      at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
      at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
      at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
      at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
  </code></pre>
  
  <p>Any help will be appreciated a lot!</p>