[Java]Visualizzazione dati JTable

[darksoullight88]

salve a tutti.
il mio problema è il seguente: dopo aver creato una JTable non riesco a visualizzare i dati contenuti nel vettore.
posto qui il codice.

----frame contentente la JTable con il relativo modello----
public class TabellaJFrame extends JFrame {

private static final long serialVersionUID = 1L;
private JPanel jContentPane = null;
private JScrollPane jScrollPane = null;
private JTable jTable = null;
private JPanel jPanel2 = null;
private JLabel nomeJL = null;
private JLabel cognomeJL = null;
private JLabel lavoroJL = null;
private JTextField nomeJTF = null;
private JTextField cognomeJTF = null;
private JTextField lavoroJTF = null;
private JButton okJB = null;
public Vector data = new Vector();

class MyTableModel extends AbstractTableModel {

private String[] columnNames = { "Nome", "Cognome", "Lavoro" };

public int getColumnCount() {
return columnNames.length;
}

public int getRowCount() {
return data.size();
}

public String getColumnName(int col) {
return columnNames[col];
}

public Object getValueAt(int row, int col) {
GenericBean gb = new GenericBean();
gb = (GenericBean) data.get(row);
switch (col) {
case 0:
return gb.getNome();
case 1:
return gb.getCognome();
case 2:
return gb.getLavoro();
default:
return "";
}
}

public void setValueAt(Object value, int row, int col) {
GenericBean gb = new GenericBean();
gb = (GenericBean) data.get(row);
switch (col) {
case 0:
gb.setNome((String) value);
break;
case 1:
gb.setCognome((String) value);
break;
case 2:
gb.setLavoro((String) value);
break;
default:
return;
}
fireTableCellUpdated(row, col);
}
}

/**
* This method initializes jScrollPane
*
* @return javax.swing.JScrollPane
*/
private JScrollPane getJScrollPane() {
if (jScrollPane == null) {
try {
jScrollPane = new JScrollPane();
jScrollPane.setBounds(new Rectangle(1, 1, 462, 231));
jScrollPane.setViewportView(getJTable());
} catch (java.lang.Throwable e) {
e.printStackTrace();
}
}
return jScrollPane;
}

/**
* This method initializes jTable
*
* @return javax.swing.JTable
*/
private JTable getJTable() {
if (jTable == null) {
try {
jTable = new JTable(new MyTableModel());
jTable.setAutoResizeMode(JTable.AUTO_RESIZE_SUBSEQ UENT_COLUMNS);
jTable.setCellSelectionEnabled(true);
jTable.setColumnSelectionAllowed(true);
jTable.setEnabled(true);
jTable.setGridColor(Color.black);
jTable.setShowGrid(true);
jTable.setBackground(Color.white);
jTable.setVisible(true);
} catch (java.lang.Throwable e) {
e.printStackTrace();
}
}
return jTable;
}

/**
* This method initializes jPanel2
*
* @return javax.swing.JPanel
*/
private JPanel getJPanel2() {
if (jPanel2 == null) {
try {
lavoroJL = new JLabel();
lavoroJL.setBounds(new Rectangle(325, 10, 120, 25));
lavoroJL.setName("lavoroJL");
lavoroJL.setPreferredSize(new Dimension(120, 25));
lavoroJL.setDisplayedMnemonic(KeyEvent.VK_UNDEFINE D);
lavoroJL.setText("Lavoro");
lavoroJL.setFont(new Font("Tahoma", Font.BOLD, 14));
cognomeJL = new JLabel();
cognomeJL.setBounds(new Rectangle(150, 10, 160, 25));
cognomeJL.setName("cognomeJL");
cognomeJL.setPreferredSize(new Dimension(160, 25));
cognomeJL.setDisplayedMnemonic(KeyEvent.VK_UNDEFIN ED);
cognomeJL.setText("Cognome");
cognomeJL.setFont(new Font("Tahoma", Font.BOLD, 14));
nomeJL = new JLabel();
nomeJL.setDisplayedMnemonic(KeyEvent.VK_UNDEFINED) ;
nomeJL.setName("nomeJL");
nomeJL.setFont(new Font("Tahoma", Font.BOLD, 14));
nomeJL.setSize(new Dimension(120, 25));
nomeJL.setLocation(new Point(15, 10));
nomeJL.setPreferredSize(new Dimension(120, 25));
nomeJL.setText("Nome");
jPanel2 = new JPanel();
jPanel2.setLayout(null);
jPanel2.setBounds(new Rectangle(1, 232, 462, 125));
jPanel2.setBackground(new Color(255, 255, 227));
jPanel2.add(nomeJL, null);
jPanel2.add(cognomeJL, null);
jPanel2.add(lavoroJL, null);
jPanel2.add(getNomeJTF(), null);
jPanel2.add(getCognomeJTF(), null);
jPanel2.add(getLavoroJTF(), null);
jPanel2.add(getOkJB(), null);
} catch (java.lang.Throwable e) {
e.printStackTrace();
}
}
return jPanel2;
}

/**
* This method initializes nomeJTF
*
* @return javax.swing.JTextField
*/
private JTextField getNomeJTF() {
if (nomeJTF == null) {
try {
nomeJTF = new JTextField();
nomeJTF.setBounds(new Rectangle(15, 45, 120, 25));
nomeJTF.setFont(new Font("Tahoma", Font.BOLD, 13));
nomeJTF.setName("nomeJTF");
nomeJTF.setPreferredSize(new Dimension(120, 25));
nomeJTF.setColumns(100);
} catch (java.lang.Throwable e) {
e.printStackTrace();
}
}
return nomeJTF;
}

/**
* This method initializes cognomeJTF
*
* @return javax.swing.JTextField
*/
private JTextField getCognomeJTF() {
if (cognomeJTF == null) {
try {
cognomeJTF = new JTextField();
cognomeJTF.setBounds(new Rectangle(150, 45, 160, 25));
cognomeJTF.setName("cognomeJTF");
cognomeJTF.setPreferredSize(new Dimension(160, 25));
cognomeJTF.setColumns(100);
cognomeJTF.setFont(new Font("Tahoma", Font.BOLD, 13));
} catch (java.lang.Throwable e) {
e.printStackTrace();
}
}
return cognomeJTF;
}

/**
* This method initializes lavoroJTF
*
* @return javax.swing.JTextField
*/
private JTextField getLavoroJTF() {
if (lavoroJTF == null) {
try {
lavoroJTF = new JTextField();
lavoroJTF.setBounds(new Rectangle(325, 45, 120, 25));
lavoroJTF.setName("lavoroJTF");
lavoroJTF.setPreferredSize(new Dimension(120, 25));
lavoroJTF.setColumns(100);
lavoroJTF.setFont(new Font("Tahoma", Font.BOLD, 13));
} catch (java.lang.Throwable e) {
e.printStackTrace();
}
}
return lavoroJTF;
}

/**
* This method initializes okJB
*
* @return javax.swing.JButton
*/
private JButton getOkJB() {
if (okJB == null) {
try {
okJB = new JButton();
okJB.setHorizontalTextPosition(SwingConstants.CENT ER);
okJB.setSize(new Dimension(130, 35));
okJB.setLocation(new Point(165, 80));
okJB.setName("okJB");
okJB.setPreferredSize(new Dimension(130, 35));
okJB.setText("OK");
okJB.setFont(new Font("Tahoma", Font.BOLD, 16));
okJB.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent e) {
processOK();
}
});
} catch (java.lang.Throwable e) {
e.printStackTrace();
}
}
return okJB;
}

/**
* @param args
*/
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
TabellaJFrame thisClass = new TabellaJFrame();
thisClass.setDefaultCloseOperation(JFrame.EXIT_ON_ CLOSE);
thisClass.setVisible(true);
}
});
}

/**
* This is the default constructor
*/
public TabellaJFrame() {
super();
initialize();
}

/**
* This method initializes this
*
* @return void
*/
private void initialize() {
this.setContentPane(getJContentPane());
this.setTitle("Tabella");
this.setResizable(false);
this.setPreferredSize(new Dimension(470, 350));
this.setName("frame");
this.setMinimumSize(new Dimension(470, 350));
this.setMaximumSize(new Dimension(470, 350));
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE );
this.setBounds(new Rectangle(0, 0, 470, 390));
this.setVisible(true);
}

/**
* This method initializes jContentPane
*
* @return javax.swing.JPanel
*/
private JPanel getJContentPane() {
if (jContentPane == null) {
jContentPane = new JPanel();
jContentPane.setLayout(null);
jContentPane.setName("jpanel");
jContentPane.setBackground(Color.white);
jContentPane.add(getJScrollPane(), null);
jContentPane.add(getJPanel2(), null);
}
return jContentPane;
}

private void processOK() {
GenericBean gb = new GenericBean();
gb.setNome(getNomeJTF().getText());
gb.setCognome(getCognomeJTF().getText());
gb.setLavoro(getLavoroJTF().getText());
data.add(gb);
}
}

------sorgente del bean utilizzato---

public class GenericBean {

private String nome = new String();
private String cognome = new String();
private String lavoro = new String();

/**
*
*/
public GenericBean(String nome, String cognome, String lavoro) {
super();
this.nome = nome;
this.cognome = cognome;
this.lavoro = lavoro;
}

public GenericBean() {
super();
}

/**
* @return the nome
*/
public String getNome() {
return nome;
}

/**
* @param nome
* the nome to set
*/
public void setNome(String nome) {
this.nome = nome;
}

/**
* @return the cognome
*/
public String getCognome() {
return cognome;
}

/**
* @param cognome
* the cognome to set
*/
public void setCognome(String cognome) {
this.cognome = cognome;
}

/**
* @return the lavoro
*/
public String getLavoro() {
return lavoro;
}

/**
* @param lavoro
* the lavoro to set
*/
public void setLavoro(String lavoro) {
this.lavoro = lavoro;
}

}

qualcuno di voi può aiutarmi a risolvere questo problema??
grazie!

[andbin]

Originariamente inviato da darksoullight88
il mio problema è il seguente: dopo aver creato una JTable non riesco a visualizzare i dati contenuti nel vettore.

Non basta fare

data.add(gb);

Bisogna anche invocare fireTableRowsInserted() del table model per "far sapere" a chi visualizza i dati (il JTable) che una riga è stata aggiunta.

In genere la struttura dati (nel tuo caso è il Vector) la si mette tipicamente dentro il table model, non fuori. E nel tuo table model potresti mettere un metodo che riceve un GenericBean, il metodo si occuperà di inserirlo fisicamente nel vettore e di fare il "fire" della modifica.
Questo sarebbe un design più appropriato.

[darksoullight88]

grazie mille per il tuo aiuto e per il tuo tempo.
posto qui il codice opportunamente modificato nel caso in cui possa servire a qualcun altro.

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.event.KeyEvent;
import java.util.Vector;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.SwingConstants;
import javax.swing.SwingUtilities;
import javax.swing.table.AbstractTableModel;

/**
 * @author marialaura
 * 
 */
public class TabellaJFrame extends JFrame {

	private static final long serialVersionUID = 1L;
	private JPanel jContentPane = null;
	private JScrollPane jScrollPane = null;
	private JTable jTable = null;
	private JPanel jPanel2 = null;
	private JLabel nomeJL = null;
	private JLabel cognomeJL = null;
	private JLabel lavoroJL = null;
	private JTextField nomeJTF = null;
	private JTextField cognomeJTF = null;
	private JTextField lavoroJTF = null;
	private JButton okJB = null;

	class MyTableModel extends AbstractTableModel {
		private Vector data = new Vector();
		int row;
		private String[] columnNames = { "Nome", "Cognome", "Lavoro" };

		public int getColumnCount() {
			return columnNames.length;
		}

		public int getRowCount() {
			return data.size();
		}

		public String getColumnName(int col) {
			return columnNames[col];
		}

		public Object getValueAt(int row, int col) {
			GenericBean gb = new GenericBean();
			gb = (GenericBean) data.get(row);
			switch (col) {
			case 0:
				return gb.getNome();
			case 1:
				return gb.getCognome();
			case 2:
				return gb.getLavoro();
			default:
				return "";
			}
		}

		public void setValueAt(Object value, int row, int col) {
			GenericBean gb = new GenericBean();
			gb = (GenericBean) data.get(row);
			switch (col) {
			case 0:
				gb.setNome((String) value);
				break;
			case 1:
				gb.setCognome((String) value);
				break;
			case 2:
				gb.setLavoro((String) value);
				break;
			default:
				return;
			}
			fireTableCellUpdated(row, col);
		}

		public void addRows(GenericBean gb) {
			data.add(gb);
			fireTableRowsInserted(row, row + 1);
			row++;
		}
	}

	private MyTableModel tm = new MyTableModel();

	/**
	 * This method initializes jScrollPane
	 * 
	 * @return javax.swing.JScrollPane
	 */
	private JScrollPane getJScrollPane() {
		if (jScrollPane == null) {
			try {
				jScrollPane = new JScrollPane();
				jScrollPane.setBounds(new Rectangle(1, 1, 462, 231));
				jScrollPane.setViewportView(getJTable());
			} catch (java.lang.Throwable e) {
				e.printStackTrace();
			}
		}
		return jScrollPane;
	}

	/**
	 * This method initializes jTable
	 * 
	 * @return javax.swing.JTable
	 */
	private JTable getJTable() {
		if (jTable == null) {
			try {
				jTable = new JTable(tm);
				jTable.setAutoResizeMode(JTable.AUTO_RESIZE_SUBSEQUENT_COLUMNS);
				jTable.setCellSelectionEnabled(true);
				jTable.setColumnSelectionAllowed(true);
				jTable.setEnabled(true);
				jTable.setGridColor(Color.black);
				jTable.setShowGrid(true);
				jTable.setBackground(Color.white);
				jTable.setVisible(true);
			} catch (java.lang.Throwable e) {
				e.printStackTrace();
			}
		}
		return jTable;
	}

	/**
	 * This method initializes jPanel2
	 * 
	 * @return javax.swing.JPanel
	 */
	private JPanel getJPanel2() {
		if (jPanel2 == null) {
			try {
				lavoroJL = new JLabel();
				lavoroJL.setBounds(new Rectangle(325, 10, 120, 25));
				lavoroJL.setName("lavoroJL");
				lavoroJL.setPreferredSize(new Dimension(120, 25));
				lavoroJL.setDisplayedMnemonic(KeyEvent.VK_UNDEFINED);
				lavoroJL.setText("Lavoro");
				lavoroJL.setFont(new Font("Tahoma", Font.BOLD, 14));
				cognomeJL = new JLabel();
				cognomeJL.setBounds(new Rectangle(150, 10, 160, 25));
				cognomeJL.setName("cognomeJL");
				cognomeJL.setPreferredSize(new Dimension(160, 25));
				cognomeJL.setDisplayedMnemonic(KeyEvent.VK_UNDEFINED);
				cognomeJL.setText("Cognome");
				cognomeJL.setFont(new Font("Tahoma", Font.BOLD, 14));
				nomeJL = new JLabel();
				nomeJL.setDisplayedMnemonic(KeyEvent.VK_UNDEFINED);
				nomeJL.setName("nomeJL");
				nomeJL.setFont(new Font("Tahoma", Font.BOLD, 14));
				nomeJL.setSize(new Dimension(120, 25));
				nomeJL.setLocation(new Point(15, 10));
				nomeJL.setPreferredSize(new Dimension(120, 25));
				nomeJL.setText("Nome");
				jPanel2 = new JPanel();
				jPanel2.setLayout(null);
				jPanel2.setBounds(new Rectangle(1, 232, 462, 125));
				jPanel2.setBackground(new Color(255, 255, 227));
				jPanel2.add(nomeJL, null);
				jPanel2.add(cognomeJL, null);
				jPanel2.add(lavoroJL, null);
				jPanel2.add(getNomeJTF(), null);
				jPanel2.add(getCognomeJTF(), null);
				jPanel2.add(getLavoroJTF(), null);
				jPanel2.add(getOkJB(), null);
			} catch (java.lang.Throwable e) {
				e.printStackTrace();
			}
		}
		return jPanel2;
	}

	/**
	 * This method initializes nomeJTF
	 * 
	 * @return javax.swing.JTextField
	 */
	private JTextField getNomeJTF() {
		if (nomeJTF == null) {
			try {
				nomeJTF = new JTextField();
				nomeJTF.setBounds(new Rectangle(15, 45, 120, 25));
				nomeJTF.setFont(new Font("Tahoma", Font.BOLD, 13));
				nomeJTF.setName("nomeJTF");
				nomeJTF.setPreferredSize(new Dimension(120, 25));
				nomeJTF.setColumns(100);
			} catch (java.lang.Throwable e) {
				e.printStackTrace();
			}
		}
		return nomeJTF;
	}

	/**
	 * This method initializes cognomeJTF
	 * 
	 * @return javax.swing.JTextField
	 */
	private JTextField getCognomeJTF() {
		if (cognomeJTF == null) {
			try {
				cognomeJTF = new JTextField();
				cognomeJTF.setBounds(new Rectangle(150, 45, 160, 25));
				cognomeJTF.setName("cognomeJTF");
				cognomeJTF.setPreferredSize(new Dimension(160, 25));
				cognomeJTF.setColumns(100);
				cognomeJTF.setFont(new Font("Tahoma", Font.BOLD, 13));
			} catch (java.lang.Throwable e) {
				e.printStackTrace();
			}
		}
		return cognomeJTF;
	}

	/**
	 * This method initializes lavoroJTF
	 * 
	 * @return javax.swing.JTextField
	 */
	private JTextField getLavoroJTF() {
		if (lavoroJTF == null) {
			try {
				lavoroJTF = new JTextField();
				lavoroJTF.setBounds(new Rectangle(325, 45, 120, 25));
				lavoroJTF.setName("lavoroJTF");
				lavoroJTF.setPreferredSize(new Dimension(120, 25));
				lavoroJTF.setColumns(100);
				lavoroJTF.setFont(new Font("Tahoma", Font.BOLD, 13));
			} catch (java.lang.Throwable e) {
				e.printStackTrace();
			}
		}
		return lavoroJTF;
	}

	/**
	 * This method initializes okJB
	 * 
	 * @return javax.swing.JButton
	 */
	private JButton getOkJB() {
		if (okJB == null) {
			try {
				okJB = new JButton();
				okJB.setHorizontalTextPosition(SwingConstants.CENTER);
				okJB.setSize(new Dimension(130, 35));
				okJB.setLocation(new Point(165, 80));
				okJB.setName("okJB");
				okJB.setPreferredSize(new Dimension(130, 35));
				okJB.setText("OK");
				okJB.setFont(new Font("Tahoma", Font.BOLD, 16));
				okJB.addMouseListener(new java.awt.event.MouseAdapter() {
					public void mouseClicked(java.awt.event.MouseEvent e) {
						processOK();
					}
				});
			} catch (java.lang.Throwable e) {
				e.printStackTrace();
			}
		}
		return okJB;
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		SwingUtilities.invokeLater(new Runnable() {
			public void run() {
				TabellaJFrame thisClass = new TabellaJFrame();
				thisClass.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
				thisClass.setVisible(true);
			}
		});
	}

	/**
	 * This is the default constructor
	 */
	public TabellaJFrame() {
		super();
		initialize();
	}

	/**
	 * This method initializes this
	 * 
	 * @return void
	 */
	private void initialize() {
		this.setContentPane(getJContentPane());
		this.setTitle("Tabella");
		this.setResizable(false);
		this.setPreferredSize(new Dimension(470, 350));
		this.setName("frame");
		this.setMinimumSize(new Dimension(470, 350));
		this.setMaximumSize(new Dimension(470, 350));
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		this.setBounds(new Rectangle(0, 0, 470, 390));
		this.setVisible(true);
	}

	/**
	 * This method initializes jContentPane
	 * 
	 * @return javax.swing.JPanel
	 */
	private JPanel getJContentPane() {
		if (jContentPane == null) {
			jContentPane = new JPanel();
			jContentPane.setLayout(null);
			jContentPane.setName("jpanel");
			jContentPane.setBackground(Color.white);
			jContentPane.add(getJScrollPane(), null);
			jContentPane.add(getJPanel2(), null);
		}
		return jContentPane;
	}

	private void processOK() {
		GenericBean gb = new GenericBean();
		gb.setNome(getNomeJTF().getText());
		gb.setCognome(getCognomeJTF().getText());
		gb.setLavoro(getLavoroJTF().getText());
		tm.addRows(gb);
	}
}

[andbin]

Originariamente inviato da darksoullight88

		public void addRows(GenericBean gb) {
			data.add(gb);
			fireTableRowsInserted(row, row + 1);
			row++;
		}

Ci siamo ... quasi. Innanzitutto l'indice della riga aggiunta lo puoi facilmente dedurre dal size() del Vector. Inoltre al fireTableRowsInserted basta passare per entrambi i parametri lo stesso valore (aggiungi 1 riga, non di più).

Detto in codice:

data.add(gb);
int row = data.size ()-1;
fireTableRowsInserted(row, row);

[darksoullight88]

grazie mille di nuovo per il tuo aiuto!