Я хотел бы знать, как загрузить файл lol.txt
из src
в мой метод закрытия. Код до сих пор:Загрузите файл из папки src в считыватель
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();
}
}
}
Консоль вывода ошибок при инициировании:
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at java.io.Reader.<init>(Unknown Source)
at java.io.InputStreamReader.<init>(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)
Если вы просто хотите прочитать файл, это выглядит хорошо. Если вы хотите использовать эти файлы как классы Java или что-то в этом роде, скорее всего, больше. – MathSquared
Что содержит файл .txt? Обычный текст или определение класса? –
'Класс # getResourceAsStream (String)' –