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POLoad a file from src folder into a reader
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  1. POLoad a file from src folder into a reader
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    copied!<p>I would like to know how can I load a file <code>lol.txt</code> from <code>src</code> folder into my close method. The code so far:</p> <pre><code> public void close() throws IOException { boolean loadFromClasspath = true; String fileName = "..."; // provide an absolute path here to be sure that file is found BufferedReader reader = null; try { if (loadFromClasspath) { // loading from classpath // see the link above for more options InputStream in = getClass().getClassLoader().getResourceAsStream("lol.txt"); reader = new BufferedReader(new InputStreamReader(in)); } else { // load from file system reader = new BufferedReader(new FileReader(new File(fileName))); } String line = null; while ( (line = reader.readLine()) != null) { // do something with the line here System.out.println("Line read: " + line); } } catch (IOException e) { JOptionPane.showMessageDialog(null,e.getMessage()+" for lol.txt","File Error",JOptionPane.ERROR_MESSAGE); } finally { if (reader != null) { reader.close(); } } } </code></pre> <p>Console error output on initiation:</p> <pre><code>Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at java.io.Reader.&lt;init&gt;(Unknown Source) at java.io.InputStreamReader.&lt;init&gt;(Unknown Source) at main.main.close(main.java:191) at main.main$1.windowClosing(main.java:24) at java.awt.Window.processWindowEvent(Unknown Source) at javax.swing.JFrame.processWindowEvent(Unknown Source) at java.awt.Window.processEvent(Unknown Source) at java.awt.Component.dispatchEventImpl(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Window.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.EventQueue.dispatchEventImpl(Unknown Source) at java.awt.EventQueue.access$000(Unknown Source) at java.awt.EventQueue$3.run(Unknown Source) at java.awt.EventQueue$3.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source) at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source) at java.awt.EventQueue$4.run(Unknown Source) at java.awt.EventQueue$4.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source) </code></pre>
 

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