Ciao a tutti... rieccomi per l'ennesimo problema con java :asd: Semplicemente, non riesco ad implementare KeyListener... questo il sorgente:
codice:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Erasechar extends JFrame implements ActionListener,KeyListener
{
	private JTextField rigaIns;
	private JTextField rigaEle;
	private JTextField rigaFin;
	private String stringa;
	private int el;
	public Erasechar()
	{
		super("Elimina carattere");
		setSize(200,115);
		setLocationRelativeTo(null);
		setResizable(false);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setLayout(new FlowLayout());
		
		MouseHandler handler = new MouseHandler();
		
		rigaIns = new JTextField("Inserisci stringa",15);
		rigaIns.addMouseListener(handler);
		rigaIns.addKeyListener(this);
		add(rigaIns);
		
		rigaEle = new JTextField("Inserisci elemento da eliminare",15);
		rigaEle.addActionListener(this);
		rigaEle.addMouseListener(handler);
		add(rigaEle);
		
		rigaFin = new JTextField(15);
		rigaFin.setEditable(false);
		rigaFin.setDisabledTextColor(Color.BLACK);
		add(rigaFin);
		
		setVisible(true);
	}
	public void keyPressed(KeyEvent event)
	{
		stringa = rigaIns.getText();
		if (event.getSource() == rigaIns)
		{
			if (stringa.equals(""))
			{
				rigaIns.setText("");
			}
		}
	}
	public void actionPerformed(ActionEvent event)
	{
		if (event.getSource() == rigaEle)
		{
			el = Integer.valueOf(rigaEle.getText()).intValue();
			stringa = rigaIns.getText();
			stringa = stringa.substring(0,el-1) + stringa.substring(el+1,stringa.length());

			rigaFin.setText(stringa);
		}
	}
	private class MouseHandler extends MouseAdapter
	{
		public void mousePressed(MouseEvent event)
		{
			if (event.getSource() == rigaIns)
			{
				rigaIns.setText("");
			}
			else if (event.getSource() == rigaEle)
			{
				rigaEle.setText("");
			}
		}
	}
	public static void main(String[] args)
	{
		new Erasechar();
	}
}
Mi da il seguente errore quando tento di compilare: "Erasechar is not abstract and does not override abstract method keyReleased(java.awt.event.KeyEvent) in java.awt.event.KeyListener"

Dandomi errore alla riga 4 che ho evidenziato in grassetto... qualcuno mi aiuta?? ^^