やあ、
TableModel を作成しましたが、新しい行を追加したら JTable を更新したいと考えています。JTable を「リフレッシュ」するには、リスナーに何を追加する必要がありますか?
public class MyTableModel implements TableModel {
private Set<TableModelListener> listeners = new HashSet<TableModelListener>();
//List<Staff> staffs = Factory.getInstance().getStaffDAO().getAllStaff();
private List<Staff> staffs;
public MyTableModel(List<Staff> staffs){
this.staffs = staffs;
}
@Override
public int getRowCount() {
return staffs.size();
}
@Override
public int getColumnCount() {
return 5;
}
@Override
public String getColumnName(int columnIndex) {
switch (columnIndex){
case 0:
return "First Name";
case 1:
return "Second Name";
case 2:
return "Date";
case 3:
return "Position";
case 4:
return "Salary";
}
return "";
}
@Override
public Class<?> getColumnClass(int columnIndex) {
return Object.class;
}
@Override
public boolean isCellEditable(int rowIndex, int columnIndex) {
return true;
}
@Override
public Object getValueAt(int rowIndex, int columnIndex) {
Staff staff = staffs.get(rowIndex);
switch (columnIndex){
case 0:
return staff.getName();
case 1:
return staff.getSurname();
case 2:
return staff.getDate();
case 3:
return staff.getPosition();
case 4:
return staff.getSalary();
}
return "";
}
@Override
public void setValueAt(Object aValue, int rowIndex, int columnIndex) {
}
@Override
public void addTableModelListener(TableModelListener l) {
}
@Override
public void removeTableModelListener(TableModelListener l) {
}
}
行追加ボタンのリスナーは次のとおりです。
@Override
public void actionPerformed(ActionEvent e) {
Staff staff = new Staff();
staff.setName(JOptionPane.showInputDialog("Enter First Name"));
staff.setSurname(JOptionPane.showInputDialog("Enter Second Name"));
staff.setDate(JOptionPane.showInputDialog("Enter Date"));
staff.setPosition(JOptionPane.showInputDialog("Enter Position"));
staff.setSalary(JOptionPane.showInputDialog("Enter Salary"));
try {
Factory.getInstance().getStaffDAO().addStaff(staff);
} catch (SQLException e1) {
e1.printStackTrace();
}
!!!Here should be some code that will be firing my table after adding new row!!!
}
actionPerformed() で AbstractTableModel のメソッド firetabledatachanged() を使用しようとしましたが、運が悪く、ClassCastException が表示されます。
更新 1
WorkPlaceGui.java
public class WorkPlaceGui extends JFrame implements ActionListener {
AbstractTableModel model;
JTable jTable;
JScrollPane jScrollPane;
public WorkPlaceGui()throws SQLException{
List<Staff> staffs = Factory.getInstance().getStaffDAO().getAllStaff();
for(int i = 0; i < 0; i++) {
staffs.add(new Staff("First Name " + staffs.get(i).getName(), "Second Name " + staffs.get(i).getSurname(), "Date " + staffs.get(i).getDate(), "Position " + staffs.get(i).getPosition(), "Salary " + staffs.get(i).getSalary()));
}
model = new MyTableModel(staffs);
jTable = new JTable(model);
JButton jBtnAdd = new JButton("Добавить");
JButton jBtnDel = new JButton("Удалить");
JButton jBtnUpd = new JButton("Обновить");
JButton jBtnAdmin = new JButton("Админка");
JPanel panelNorth = new JPanel();
JPanel panelCenter = new JPanel();
JPanel panelSouth = new JPanel();
jTable.setPreferredScrollableViewportSize(new Dimension(350, 150));
jScrollPane = new JScrollPane(jTable);
panelNorth.setLayout(new FlowLayout());
panelNorth.add(jBtnAdd);
panelNorth.add(jBtnDel);
panelNorth.add(jBtnUpd);
panelNorth.add(jBtnAdmin);
panelCenter.add(jScrollPane);
setLayout(new BorderLayout());
add(panelNorth, BorderLayout.NORTH);
add(panelCenter, BorderLayout.CENTER);
jBtnAdd.addActionListener(this);
setPreferredSize(new Dimension(550, 300));
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
setTitle("Staff data base");
pack();
setVisible(true);
setLocationRelativeTo(null);
}
@Override
public void actionPerformed(ActionEvent e) {
Staff staff = new Staff();
staff.setName(JOptionPane.showInputDialog("Enter First Name"));
staff.setSurname(JOptionPane.showInputDialog("Enter Second Name"));
staff.setDate(JOptionPane.showInputDialog("Enter Date"));
staff.setPosition(JOptionPane.showInputDialog("Enter Position"));
staff.setSalary(JOptionPane.showInputDialog("Enter Salary"));
try {
Factory.getInstance().getStaffDAO().addStaff(staff);
} catch (SQLException e1) {
e1.printStackTrace();
}
model.fireTableDataChanged();
}
}
MyTableModel.java
public class MyTableModel extends AbstractTableModel {
private List<Staff> staffs;
public MyTableModel(List<Staff> staffs){
this.staffs = staffs;
}
@Override
public int getRowCount() {
return staffs.size();
}
@Override
public int getColumnCount() {
return 5;
}
@Override
public Object getValueAt(int rowIndex, int columnIndex) {
Staff staff = staffs.get(rowIndex);
switch (columnIndex){
case 0:
return staff.getName();
case 1:
return staff.getSurname();
case 2:
return staff.getDate();
case 3:
return staff.getPosition();
case 4:
return staff.getSalary();
}
return "";
}
}