// @topic S-0301-01-11-10 Java JTable Demo
// @brief class MainWindow extends JFrame<br />download netbeans <a href="http://www.c-jump.com/bcc/c260c/c260samples15S/Java/Wk01_JTable/MainWindow.form"><tt>MainWindow.form</tt></a>
package Week01;
public class MainWindow extends javax.swing.JFrame {
/**
* Creates new form MainWindow
*/
public MainWindow() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
private void initComponents() {
pnlMain = new javax.swing.JPanel();
lblFloors = new javax.swing.JLabel();
lblElevators = new javax.swing.JLabel();
txtFloors = new javax.swing.JTextField();
txtElevators = new javax.swing.JTextField();
btnConfigureGrid = new javax.swing.JButton();
jScrollPane1 = new javax.swing.JScrollPane();
tblElevators = new javax.swing.JTable();
btnPopulate = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Grid Demo");
lblFloors.setText("Floors:");
lblElevators.setText("Elevators:");
btnConfigureGrid.setText("Configure Grid");
btnConfigureGrid.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnConfigureGridActionPerformed(evt);
}
});
tblElevators.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null}
},
new String [] {
"Title 1", "Title 2", "Title 3", "Title 4"
}
));
jScrollPane1.setViewportView(tblElevators);
btnPopulate.setText("Populate Grid");
btnPopulate.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnPopulateActionPerformed(evt);
}
});
javax.swing.GroupLayout pnlMainLayout = new javax.swing.GroupLayout(pnlMain);
pnlMain.setLayout(pnlMainLayout);
pnlMainLayout.setHorizontalGroup(
pnlMainLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(pnlMainLayout.createSequentialGroup()
.addContainerGap()
.addGroup(pnlMainLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addGroup(pnlMainLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addGroup(pnlMainLayout.createSequentialGroup()
.addComponent(lblFloors)
.addGap(18, 18, 18)
.addComponent(txtFloors, javax.swing.GroupLayout.PREFERRED_SIZE, 33, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(pnlMainLayout.createSequentialGroup()
.addComponent(lblElevators)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(txtElevators)))
.addComponent(btnConfigureGrid, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(btnPopulate, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGap(18, 18, 18)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 220, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
pnlMainLayout.setVerticalGroup(
pnlMainLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(pnlMainLayout.createSequentialGroup()
.addGap(19, 19, 19)
.addGroup(pnlMainLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addGroup(pnlMainLayout.createSequentialGroup()
.addGroup(pnlMainLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(lblFloors)
.addComponent(txtFloors, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(pnlMainLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(lblElevators)
.addComponent(txtElevators, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addComponent(btnConfigureGrid)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(btnPopulate))
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 126, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(87, Short.MAX_VALUE))
);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(pnlMain, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(0, 24, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(pnlMain, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(0, 65, Short.MAX_VALUE))
);
pack();
}// </editor-fold>//GEN-END:initComponents
private void btnConfigureGridActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnConfigureGridActionPerformed
int floors = Integer.parseInt(txtFloors.getText());
int elevators = Integer.parseInt(txtElevators.getText());
// configure column names
String[] columnNames = new String[ elevators ];
char[] dummy = { 'A' };
for ( int idx = 0; idx < elevators; ++idx ) {
//dummy[ 0 ] = idx + 'A';
dummy[ 0 ] = (char)(idx + 'A');
columnNames[ idx ] = new String( dummy );
}
// populate 2-dimensional array of data
Object[][] tableContent = new Object[floors/*rows*/][elevators/*columns*/];
tblElevators.setModel(
new javax.swing.table.DefaultTableModel(
tableContent,
columnNames
)
);
}//GEN-LAST:event_btnConfigureGridActionPerformed
private void btnPopulateActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnPopulateActionPerformed
javax.swing.table.TableModel model = tblElevators.getModel();
model.setValueAt("X", 0/*row*/, 0/*column*/);
model.setValueAt("X", 1/*row*/, 1/*column*/);
model.setValueAt("X", 2/*row*/, 2/*column*/);
model.setValueAt("X", 3/*row*/, 3/*column*/);
}//GEN-LAST:event_btnPopulateActionPerformed
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(MainWindow.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(MainWindow.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(MainWindow.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(MainWindow.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
MainWindow window = new MainWindow();
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
window.setVisible(true);
}
});
}
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JButton btnConfigureGrid;
private javax.swing.JButton btnPopulate;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JLabel lblElevators;
private javax.swing.JLabel lblFloors;
private javax.swing.JPanel pnlMain;
private javax.swing.JTable tblElevators;
private javax.swing.JTextField txtElevators;
private javax.swing.JTextField txtFloors;
// End of variables declaration//GEN-END:variables
}