I have the following panel in NetBeans (only around the first third is my work, the rest is auto-generated and unmodifiable):
public class ScorePanel extends javax.swing.JPanel {
private DefaultTableModel dtm;
public ScorePanel() {
initComponents();
dtm = (DefaultTableModel) scoreTable.getModel();
for(int i = dtm.getRowCount() - 1; i >= 0; i--)
dtm.removeRow(i);
loadFile();
}
private void loadFile(){
FileInputStream ins = null;
try {
ins = new FileInputStream("./src/Resources/score.txt");
Scanner fScanner = new Scanner(ins, "UTF-8");
String[] str;
while(fScanner.hasNextLine()){
str = fScanner.nextLine().split(";");
dtm.addRow(new Object[]{str[0].trim(), Integer.parseInt(str[1].trim()), str[2]});
}
fScanner.close();
} catch (FileNotFoundException ex) {
Logger.getLogger(ScorePanel.class.getName()).log(Level.SEVERE, null, ex);
} finally {
try {
if(ins != null)
ins.close();
} catch (IOException ex) {
Logger.getLogger(ScorePanel.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
// The rest of the code was auto-generated by NetBeans and cannot be modified
private void initComponents() {
titleLabel = new javax.swing.JLabel();
jScrollPane1 = new javax.swing.JScrollPane();
scoreTable = new javax.swing.JTable();
menuButton = new javax.swing.JButton();
nameField = new javax.swing.JTextField();
scoreLabel = new javax.swing.JLabel();
timeLabel = new javax.swing.JLabel();
addButton = new javax.swing.JButton();
saveButton = new javax.swing.JButton();
setMaximumSize(new java.awt.Dimension(640, 480));
setMinimumSize(new java.awt.Dimension(640, 480));
setPreferredSize(new java.awt.Dimension(640, 480));
setLayout(null);
titleLabel.setFont(new java.awt.Font("Snap ITC", 2, 36)); // NOI18N
titleLabel.setForeground(new java.awt.Color(51, 102, 0));
titleLabel.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
titleLabel.setText("Zaku Attack!");
add(titleLabel);
titleLabel.setBounds(170, 56, 300, 47);
scoreTable.setAutoCreateColumnsFromModel(false);
scoreTable.setAutoCreateRowSorter(true);
scoreTable.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
{null, null, null},
{null, null, null},
{null, null, null},
{null, null, null}
},
new String [] {
"Name", "Score", "Time"
}
) {
Class[] types = new Class [] {
java.lang.String.class, java.lang.Integer.class, java.lang.String.class
};
boolean[] canEdit = new boolean [] {
false, false, false
};
public Class getColumnClass(int columnIndex) {
return types [columnIndex];
}
public boolean isCellEditable(int rowIndex, int columnIndex) {
return canEdit [columnIndex];
}
});
scoreTable.setRowSelectionAllowed(false);
scoreTable.setSelectionMode(javax.swing.ListSelectionModel.SINGLE_SELECTION);
jScrollPane1.setViewportView(scoreTable);
add(jScrollPane1);
jScrollPane1.setBounds(160, 191, 320, 190);
menuButton.setText("Back to Menu");
menuButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
menuButtonActionPerformed(evt);
}
});
add(menuButton);
menuButton.setBounds(250, 410, 137, 23);
add(nameField);
nameField.setBounds(160, 170, 130, 20);
add(scoreLabel);
scoreLabel.setBounds(290, 170, 60, 20);
add(timeLabel);
timeLabel.setBounds(350, 170, 60, 20);
addButton.setText("Add");
addButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
addButtonActionPerformed(evt);
}
});
add(addButton);
addButton.setBounds(410, 170, 70, 23);
saveButton.setText("Save to File");
saveButton.setMaximumSize(menuButton.getMaximumSize());
saveButton.setMinimumSize(menuButton.getMinimumSize());
saveButton.setPreferredSize(menuButton.getPreferredSize());
saveButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
saveButtonActionPerformed(evt);
}
});
add(saveButton);
saveButton.setBounds(250, 390, 140, 23);
}// </editor-fold>
private void menuButtonActionPerformed(java.awt.event.ActionEvent evt) {
parent.switchPanel(MainWindow.PanelName.MENU);
}
private void addButtonActionPerformed(java.awt.event.ActionEvent evt) {
if(!nameField.getText().isEmpty()){
dtm.addRow(new Object[]{nameField.getText(), scoreLabel.getText(), timeLabel.getText()});
nameField.setText("");
scoreLabel.setText("");
timeLabel.setText("");
addButton.setEnabled(false);
scoreTable.revalidate();
}
}
private void saveButtonActionPerformed(java.awt.event.ActionEvent evt) {
if(dtm.getRowCount() != 0){
File file = new File("./src/Resources/score.txt");
try {
if(!file.exists())
file.createNewFile();
FileWriter fw = new FileWriter(file);
int i;
for(i = 0; i < dtm.getRowCount(); i++)
fw.write(dtm.getValueAt(i, 0) + ";" +
dtm.getValueAt(i, 1)+ ";" +
dtm.getValueAt(i, 2));
fw.close();
JOptionPane.showMessageDialog(this,"Done saving file.","Completed",JOptionPane.INFORMATION_MESSAGE);
} catch (IOException ex1) {
JOptionPane.showMessageDialog(null,"Error while saving file.","Error",JOptionPane.ERROR_MESSAGE);
}
}
}
// Variables declaration - do not modify
private javax.swing.JButton addButton;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JButton menuButton;
private javax.swing.JTextField nameField;
private javax.swing.JButton saveButton;
private javax.swing.JLabel scoreLabel;
private javax.swing.JTable scoreTable;
private javax.swing.JLabel timeLabel;
private javax.swing.JLabel titleLabel;
// End of variables declaration
}
My problem is that the panel's sole table is invisible and doesn't show up even after setVisible(true) is called on it. The table's data model does have the contents of the table and said contents can be read and written normally - they're just not visible.
Drawing from my recent similar problems, can it be caused by the panel layout or look-and-feel?
