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  1. 27-07-2008, 18:54 #1
    NetRider
    NetRider non è in linea
    Utente di HTML.it
    Registrato dal
    Jul 2008
    Messaggi
    5

    NetBeans 6.1 GUI Builder

    Salve a tutti, mi sto addentrando nella programmazione in java da poco tempo. Siccome provengo da alcune esperienze con il c#. ho ritenuto molto interessante utilizzare il GUI Builder di NetBeans 6.1 per progettare le mia applicazioni desktop in java. Ora però ho un problema: ho creato alcuni bottoni (sempre con il GUI BUILDER) e ho la necessità di renderli invisibili in determinate condizioni. Però quando faccio nomebottone.setVisible(false) questo mi genera un errore, ossià "non-static variable nomebottone cannot be referenced from a static context". Purtroppo non riesco andare avanti! Sperò che qualcuno possa darmi una mano e grazie in anticipo!
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  2. 28-07-2008, 10:32 #2
    NetRider
    NetRider non è in linea
    Utente di HTML.it
    Registrato dal
    Jul 2008
    Messaggi
    5
    QUESTO è IL SORGENTE FORSE VI PUò ESSERE D'AIUTO:


    codice:
    package interesse;

/**
*
* @author NetRider
*/
public class NewJFrame extends javax.swing.JFrame {

double Capitale;
double Tasso;
double Interesse;
int Tempo;

public NewJFrame() {
initComponents();
}

// QUESTO E' IL CODICE RELATIVO ALLA GRAFICA GENERATO AUTOMATICAMENTE DAL GUI BUILDER

@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {

buttonGroup1 = new javax.swing.ButtonGroup();
buttonGroup2 = new javax.swing.ButtonGroup();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
jButton4 = new javax.swing.JButton();
jLabel1 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jTextField2 = new javax.swing.JTextField();
jTextField3 = new javax.swing.JTextField();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
jLabel5 = new javax.swing.JLabel();
jLabel6 = new javax.swing.JLabel();
jLabel7 = new javax.swing.JLabel();
jLabel8 = new javax.swing.JLabel();
jLayeredPane1 = new javax.swing.JLayeredPane();
jRadioButton1 = new javax.swing.JRadioButton();
jRadioButton2 = new javax.swing.JRadioButton();
jRadioButton3 = new javax.swing.JRadioButton();
jLayeredPane2 = new javax.swing.JLayeredPane();
jRadioButton5 = new javax.swing.JRadioButton();
jRadioButton4 = new javax.swing.JRadioButton();
jCheckBox1 = new javax.swing.JCheckBox();

setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Calcolatore Interessi");
setResizable(false);

jButton1.setText("Interesse");

jButton2.setText("Capitale");

jButton3.setText("Tasso");

jButton4.setText("Tempo");

jLabel1.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N
jLabel1.setText("Cosa vuoi calcolare?");

jLabel2.setFont(new java.awt.Font("Tahoma", 0, 12)); // NOI18N
jLabel2.setText("Capitale");

jLabel3.setFont(new java.awt.Font("Tahoma", 0, 12)); // NOI18N
jLabel3.setText("Tasso");

jLabel4.setFont(new java.awt.Font("Tahoma", 0, 12)); // NOI18N
jLabel4.setText("Tempo");

jLabel5.setFont(new java.awt.Font("Tahoma", 0, 20)); // NOI18N
jLabel5.setText("(");

jLabel6.setFont(new java.awt.Font("Tahoma", 0, 20)); // NOI18N
jLabel6.setText(")");

jLabel7.setFont(new java.awt.Font("Tahoma", 0, 20)); // NOI18N
jLabel7.setText("/");

jLabel8.setFont(new java.awt.Font("Tahoma", 0, 20)); // NOI18N
jLabel8.setText("Tempo");

jLayeredPane1.setBorder(javax.swing.BorderFactory.createTitledBorder("Scegli come è espresso il tempo"));

buttonGroup1.add(jRadioButton1);
jRadioButton1.setText("Giorni");
jRadioButton1.setBounds(10, 20, 60, 23);
jLayeredPane1.add(jRadioButton1, javax.swing.JLayeredPane.DEFAULT_LAYER);

buttonGroup1.add(jRadioButton2);
jRadioButton2.setText("Mesi");
jRadioButton2.setBounds(10, 50, 60, 23);
jLayeredPane1.add(jRadioButton2, javax.swing.JLayeredPane.DEFAULT_LAYER);

buttonGroup1.add(jRadioButton3);
jRadioButton3.setText("Anni");
jRadioButton3.setBounds(10, 80, 60, 23);
jLayeredPane1.add(jRadioButton3, javax.swing.JLayeredPane.DEFAULT_LAYER);

jLayeredPane2.setBorder(javax.swing.BorderFactory.createTitledBorder("Scegli il calendario"));

buttonGroup2.add(jRadioButton5);
jRadioButton5.setText("Commerciale");
jRadioButton5.setBounds(10, 60, 110, 23);
jLayeredPane2.add(jRadioButton5, javax.swing.JLayeredPane.DEFAULT_LAYER);

buttonGroup2.add(jRadioButton4);
jRadioButton4.setText("Civile");
jRadioButton4.setBounds(10, 30, 60, 23);
jLayeredPane2.add(jRadioButton4, javax.swing.JLayeredPane.DEFAULT_LAYER);

jCheckBox1.setText("Rileva anno bisestile");
jCheckBox1.setBounds(10, 90, 150, 23);
jLayeredPane2.add(jCheckBox1, javax.swing.JLayeredPane.DEFAULT_LAYER);

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel1)
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel5)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 94, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel2))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, 94, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel3))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, 94, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jLabel6)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jLabel7)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jLabel8))
.addGroup(layout.createSequentialGroup()
.addGap(54, 54, 54)
.addComponent(jLabel4))))
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jLayeredPane1, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 206, Short.MAX_VALUE)
.addGroup(layout.createSequentialGroup()
.addComponent(jButton1, javax.swing.GroupLayout.DEFAULT_SIZE, 94, Short.MAX_VALUE)
.addGap(18, 18, 18)
.addComponent(jButton3, javax.swing.GroupLayout.DEFAULT_SIZE, 94, Short.MAX_VALUE)))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jButton2, javax.swing.GroupLayout.DEFAULT_SIZE, 97, Short.MAX_VALUE)
.addGap(18, 18, 18)
.addComponent(jButton4, javax.swing.GroupLayout.DEFAULT_SIZE, 96, Short.MAX_VALUE)
.addGap(14, 14, 14))
.addComponent(jLayeredPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 203, javax.swing.GroupLayout.PREFERRED_SIZE))))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(16, 16, 16)
.addComponent(jLabel1)
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton1)
.addComponent(jButton3)
.addComponent(jButton2)
.addComponent(jButton4))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLayeredPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 118, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLayeredPane2, javax.swing.GroupLayout.DEFAULT_SIZE, 118, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel4)
.addComponent(jLabel3)
.addComponent(jLabel2))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel5)
.addComponent(jLabel6)
.addComponent(jLabel7)
.addComponent(jLabel8))
.addGap(37, 37, 37))
);

pack();
}// </editor-fold>

public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new NewJFrame().setVisible(true);

}
});
jButton1.setVisible(false); //QUI MI DA L'ERRORE CHE NON RIESCO A RISOLVERE
}


// Variables declaration - do not modify
private javax.swing.ButtonGroup buttonGroup1;
private javax.swing.ButtonGroup buttonGroup2;
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JButton jButton4;
private javax.swing.JCheckBox jCheckBox1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JLabel jLabel6;
private javax.swing.JLabel jLabel7;
private javax.swing.JLabel jLabel8;
private javax.swing.JLayeredPane jLayeredPane1;
private javax.swing.JLayeredPane jLayeredPane2;
private javax.swing.JRadioButton jRadioButton1;
private javax.swing.JRadioButton jRadioButton2;
private javax.swing.JRadioButton jRadioButton3;
private javax.swing.JRadioButton jRadioButton4;
private javax.swing.JRadioButton jRadioButton5;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
private javax.swing.JTextField jTextField3;
// End of variables declaration
}
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  3. 28-07-2008, 10:39 #3
    Metflar
    Metflar non è in linea
    Utente di HTML.it L'avatar di Metflar
    Registrato dal
    Apr 2007
    Messaggi
    790
    mettilo tra i tag [ CODE] e [ /CODE] non si capisce nulla
    conoscenze: C/C++, Java, PHP, Python
    [No PM tecnici o di qualsiasi genere]
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  4. 28-07-2008, 20:30 #4
    R@ve M@ster
    R@ve M@ster non è in linea
    Utente di HTML.it
    Registrato dal
    May 2005
    Messaggi
    959
    Sposta la riga incriminata nel costruttore della classe dopo la chiamata al metodo initComponents
    Al mio segnale... scatenate l'inferno!
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  5. 30-07-2008, 09:44 #5
    NetRider
    NetRider non è in linea
    Utente di HTML.it
    Registrato dal
    Jul 2008
    Messaggi
    5
    Si hai ragione te, grazie mille
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