JFileChooser
не будет работать, я получил ошибку на линии:Как добавить изображение в JButton с помощью JFileChooser
btnNewButton.setIcon(new ImageIcon(ImageIO.read(file)));
Пожалуйста, помогите мне, я новичок. Это дает мне эту ошибку:
Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: input == null! at javax.imageio.ImageIO.read(Unknown Source) at RecordManagementSystem.addRecord$1.actionPerformed(addRecord.java:185) at javax.swing.AbstractButton.fireActionPerformed(Unknown Source) at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.setPressed(Unknown Source) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source) at java.awt.Component.processMouseEvent(Unknown Source) at javax.swing.JComponent.processMouseEvent(Unknown Source) at java.awt.Component.processEvent(Unknown Source) at java.awt.Container.processEvent(Unknown Source) at java.awt.Component.dispatchEventImpl(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source) at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source) at java.awt.LightweightDispatcher.dispatchEvent(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$1.run(Unknown Source) at java.awt.EventQueue$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source) at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source) at java.awt.EventQueue$2.run(Unknown Source) at java.awt.EventQueue$2.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessControlContext$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)
Код:
btnNewButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
JFileChooser fc = new JFileChooser();
File file = fc.getSelectedFile();
int result = fc.showOpenDialog(null);
if (result == JFileChooser.APPROVE_OPTION) {
try {
btnNewButton.setIcon(new ImageIcon(ImageIO.read(file)));
} catch (IOException e) {
JOptionPane.showMessageDialog(null, e);
}
}
}
});
Могу ли я рекомендую вам пересмотреть свою ошибку ловля стратегии вместо того, чтобы просто бросали ошибку в 'JOptionPane', рассмотрит протоколирование ошибки таким образом, что вы можете просмотреть его , В моих приложениях я хочу узнать около 110% ошибок, которые вызывают. – ryvantage
спасибо за рекомендацию =) – dens14345