Tratamento de erro [RESOLVIDO]

import java.awt.BorderLayout;  
import java.awt.event.KeyEvent;  
import java.awt.event.KeyListener;  
  
import javax.swing.JFrame;  
import javax.swing.JTextField;  
  
public class AddingActionCommandActionListenerSample {  
  public static void main(String args[]) {  
    JFrame frame = new JFrame("E");  
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);  
  
    final JTextField textField = new JTextField();  
    frame.getContentPane().add(textField, BorderLayout.NORTH);  
  
    KeyListener keyListener = new KeyListener() {  
      public void keyPressed(KeyEvent keyEvent) {  
      }  
      public void keyReleased(KeyEvent keyEvent) {  
        int keyCode = keyEvent.getKeyCode();  
        if(keyEvent.getKeyText(keyCode).equals("Quote")){  
            textField.setText(textField.getText().replaceAll("'", ""));  
        }  
      }  
      public void keyTyped(KeyEvent keyEvent) {  
      }  
    };  
    textField.addKeyListener(keyListener);  
      
    frame.setSize(250, 150);  
    frame.setVisible(true);  
  }  
}