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stoi cercando di implementare un WindowListener:
ma dà questo errore:codice:import java.util.*; import java.sql.*; import java.awt.*; import javax.swing.*; import java.awt.event.*; import java.awt.Dialog.*; public class loginManager extends JFrame implements ActionListener, WindowListener { ... public void windowIconified(WindowEvent e) { System.out.println("WindowListener method called: windowIconified."); } // Costruttore public loginManager() { super("Login manager"); this.setSize(300, 200); this.setLocation(400, 300); this.setResizable(false); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //riga spezzata per esigente di layout del forum this.setIconImage(java.awt.Toolkit.getDefaultToolkit().getImage (this.getClass().getResource("agenda.gif"))); this.getContentPane().setLayout(null); ... this.addWindowListener(this); this.setVisible(true); } public static void main (String[] args) { JFrame.setDefaultLookAndFeelDecorated(true); loginManager lm = new loginManager(); } }
come mai?loginManager.java:10: loginManager is not abstract and does not override abstract meth
public class loginManager extends JFrame implements ActionListener, WindowListener
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1 error