I'm using code from internet to create Groupable TableHeader, i followed all the steps but i dont know why my Jtable is not showing up!!
I'm using netbeans to generate IHM, can anyone help me to find why Jtable is not showing ?
NB: OnLoad of the IHM, Jtable should appear
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package GUI;
import Control.ColumnGroup;
import Control.GroupableTableHeader;
import java.util.Calendar;
import java.util.Vector;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableColumnModel;
/**
*
* @author Archavine
*/
public class EvolImportations extends javax.swing.JInternalFrame {
DefaultTableModel dm = null;
int thisyear = 0;
Vector column = new Vector();
/** Creates new form EvolImportations */
public EvolImportations() {
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.
*/
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jScrollPane1 = new javax.swing.JScrollPane();
jTable1 = new javax.swing.JTable();
jLabel1 = new javax.swing.JLabel();
jComboBox1 = new javax.swing.JComboBox();
jTextField1 = new javax.swing.JTextField();
jButton1 = new javax.swing.JButton();
jTextField2 = new javax.swing.JTextField();
jLabel2 = new javax.swing.JLabel();
setClosable(true);
setIconifiable(true);
setTitle("Evolution des importations par principaux produits");
column.addElement("");
column.addElement("");
column.addElement(thisyear);
column.addElement(thisyear - 1);
column.addElement("Valeur");
column.addElement("%");
Calendar now = Calendar.getInstance(); // This gets the current date and time.
thisyear = now.get(Calendar.YEAR); // This returns the year as an int.
dm = new DefaultTableModel();
dm.setDataVector(new DAO.EvolutionImportation().EvolImport(1, 2), column);
System.err.println("Nombre de lignes : "+dm.getRowCount());
jScrollPane1.setViewportView(jTable1);
jTable1 = new JTable(dm) {
protected JTableHeader createDefaultTableHeader() {
return new GroupableTableHeader(columnModel);
}
};
System.err.println("Nombre de lignes Jtable : "+jTable1.getRowCount());
TableColumnModel cm = jTable1.getColumnModel();
ColumnGroup g_name = new ColumnGroup("Periode");
g_name.add(cm.getColumn(1));
g_name.add(cm.getColumn(2));
ColumnGroup g_lang = new ColumnGroup("Evolution");
g_lang.add(cm.getColumn(3));
g_lang.add(cm.getColumn(4));
GroupableTableHeader header = (GroupableTableHeader) jTable1.getTableHeader();
header.addColumnGroup(g_name);
header.addColumnGroup(g_lang);
jTable1.setRowHeight(30);
jLabel1.setFont(new java.awt.Font("Tahoma", 0, 12));
jLabel1.setText("MOIS");
jComboBox1.setFont(new java.awt.Font("Tahoma", 0, 12));
jComboBox1.setModel(new javax.swing.DefaultComboBoxModel(new String[]{"Egale à", "Entre"}));
jComboBox1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jComboBox1ActionPerformed(evt);
}
});
jTextField1.setFont(new java.awt.Font("Tahoma", 0, 12));
jButton1.setFont(new java.awt.Font("Tahoma", 0, 12));
jButton1.setText("Valider");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jTextField2.setFont(new java.awt.Font("Tahoma", 0, 12));
jLabel2.setFont(new java.awt.Font("Tahoma", 0, 12));
jLabel2.setText("&");
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(jScrollPane1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 707, Short.MAX_VALUE).addGroup(layout.createSequentialGroup().addComponent(jLabel1).addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED).addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, 75, javax.swing.GroupLayout.PREFERRED_SIZE).addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED).addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 43, javax.swing.GroupLayout.PREFERRED_SIZE).addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED).addComponent(jLabel2).addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED).addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, 43, javax.swing.GroupLayout.PREFERRED_SIZE).addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED).addComponent(jButton1))).addContainerGap()));
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup().addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE).addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE).addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 25, javax.swing.GroupLayout.PREFERRED_SIZE).addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, 25, javax.swing.GroupLayout.PREFERRED_SIZE).addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 25, javax.swing.GroupLayout.PREFERRED_SIZE).addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 25, javax.swing.GroupLayout.PREFERRED_SIZE).addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, 25, javax.swing.GroupLayout.PREFERRED_SIZE).addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 25, javax.swing.GroupLayout.PREFERRED_SIZE)).addGap(18, 18, 18).addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 483, javax.swing.GroupLayout.PREFERRED_SIZE).addContainerGap()));
pack();
}// </editor-fold>
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
String mois1 = jTextField1.getText();
String mois2 = jTextField2.getText();
if (jComboBox1.getSelectedItem().equals("Egale à")) {
dm.setDataVector(new DAO.EvolutionImportation().EvolImport(Integer.parseInt(mois1), Integer.parseInt(mois1)), column);
System.err.println("egale");
} else if (jComboBox1.getSelectedItem().equals("Entre")) {
dm.setDataVector(new DAO.EvolutionImportation().EvolImport(Integer.parseInt(mois1), Integer.parseInt(mois2)), column);
System.err.println("Entre");
}
}
private void jComboBox1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JComboBox jComboBox1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTable jTable1;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
// End of variables declaration
}
To summarize, the whole is generated by netbeans(Jtable, Jtextbox,... and the layout also), and in the constructor, i call a methode that return Vector with data coming from database DAO.EvolutionImportation().EvolImport(1, 2)
and column Vector contain columns name.
This is the main code :
dm = new DefaultTableModel();
dm.setDataVector(new DAO.EvolutionImportation().EvolImport(1, 2), column);
System.err.println("Nombre de lignes : "+dm.getRowCount());
jScrollPane1.setViewportView(jTable1);
jTable1 = new JTable(dm) {
protected JTableHeader createDefaultTableHeader() {
return new GroupableTableHeader(columnModel);
}
};
System.err.println("Nombre de lignes Jtable : "+jTable1.getRowCount());
TableColumnModel cm = jTable1.getColumnModel();
ColumnGroup g_name = new ColumnGroup("Periode");
g_name.add(cm.getColumn(1));
g_name.add(cm.getColumn(2));
ColumnGroup g_lang = new ColumnGroup("Evolution");
g_lang.add(cm.getColumn(3));
g_lang.add(cm.getColumn(4));
GroupableTableHeader header = (GroupableTableHeader) jTable1.getTableHeader();
header.addColumnGroup(g_name);
header.addColumnGroup(g_lang);
jTable1.setRowHeight(30);
When i run my example it show me the JinternalFrame, and jtable border but without data!!
The solution is :
Vector column = new Vector();
column.addElement("");
column.addElement("2013");
column.addElement("2012");
column.addElement("Valeur");
column.addElement("%");
DefaultTableModel dm = null;
int thisyear = 0;
String mois1 = jTextField1.getText();
String mois2 = jTextField2.getText();
Vector v = new DAO.EvolutionImportation().EvolImport(Integer.parseInt(mois1), Integer.parseInt(mois2));
dm = new DefaultTableModel();
dm.setDataVector(v, column);
jTable1.setModel(dm);
jTable1 = new JTable(dm) {
protected JTableHeader createDefaultTableHeader() {
return new GroupableTableHeader(columnModel);
}
};
TableColumnModel cm = jTable1.getColumnModel();
ColumnGroup g_name = new ColumnGroup("Periode");
g_name.add(cm.getColumn(1));
g_name.add(cm.getColumn(2));
ColumnGroup g_lang = new ColumnGroup("Evolution");
g_lang.add(cm.getColumn(3));
g_lang.add(cm.getColumn(4));
GroupableTableHeader header = (GroupableTableHeader) jTable1.getTableHeader();
header.addColumnGroup(g_name);
header.addColumnGroup(g_lang);
jTable1.setRowHeight(30);
jScrollPane1.setViewportView(jTable1);
Thanks
The initial problem is you've tried modifying code you shouldn't have and messed up the order.
You added the jTable1 to the scroll pane BEFORE it was created...
jScrollPane1.setViewportView(jTable1);
jTable1 = new JTable(dm) {
protected JTableHeader createDefaultTableHeader() {
return new GroupableTableHeader(columnModel);
}
};
Try switching the statements...
jTable1 = new JTable(dm) {
protected JTableHeader createDefaultTableHeader() {
return new GroupableTableHeader(columnModel);
}
};
jScrollPane1.setViewportView(jTable1);