java-JTable,TableModel等的复杂用法
作者：互联网
我在管理两个JTable和相关数据时遇到一些问题.
我做了这个GUI：
我解释一下用法：
在第一个jTable中,我列出了车辆(卡车,汽车…)和相关信息.
在第二个jTable中,我按下绿色箭头,列出了我要使其“可用”的车辆(即sw代理启动).因此,是第一个列表的子列表：在第一个表中选择的行将在第二个表中复制.
第一个问题：
在第一列中,我有车辆类型的说明图(在示例中您可以看到卡车).
在第三列和第五列中,我有不同的jComboBoxs.请参阅TIPO VEICOLO(即种类)的jComboBox：如果我选择其他车辆,则第一列中的图像必须更改！ (如果我选择从卡车更改为汽车,则相对图标必须更改).
而且,有可能,我不想在软件的其他地方处理此图标.我解释：我想用
Object[] vehicle = {"aaa", "kind1", "marca", "disponibile", "ptt" }
永不
Object[] vehicle = {"/image/truck.png" ,"aaa", "kind1", "marca", "disponibile", "ptt" }
第二个问题：
将来我想在jTable中添加其他功能：尺寸,车辆颜色,牌照…
我知道卡车的功能与汽车的功能不同.我想要一种将所有功能都保留在标题中的方法,但是要在每一行中(根据车辆的类型)激活/禁用某些单元格.
请注意：jTables的标头不一定相同
package it.transfersimulation;
import it.transfersimulation.Vehicle.Stato;
import it.transfersimulation.Vehicle.TipoVeicolo;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.ComponentOrientation;
import javax.swing.DefaultCellEditor;
import javax.swing.DefaultComboBoxModel;
import javax.swing.ImageIcon;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.BoxLayout;
import javax.swing.JTable;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableColumn;
import javax.swing.JButton;
import java.awt.FlowLayout;
import javax.swing.SwingConstants;
@SuppressWarnings("serial")
public class ShipperAgentGUI extends JFrame implements ActionListener {
// Variabili di classe
private JPanel masterPanel;
private JButton btnPM_plus;
private JButton btnPM_meno;
private JButton btnMD_plus;
private JButton btnMD_meno;
private JTable availablesTable;
private JTable parkTable;
private Object[] parkModelHeader = { "" , "TARGA", "TIPO VEICOLO", "MARCA", "STATO", "PTT" };
private Object[] availablesModelHeader = { "", "TARGA", "TIPO VEICOLO", "MARCA", "STATO", "PTT" };
private DefaultTableModel parkModel = new DefaultTableModel(null, parkModelHeader){
public Class<?> getColumnClass(int columnIndex) {
return getValueAt(0, columnIndex).getClass();
};
};// per aggiungere jCheckBox, jComboBox e ImageIcon
private DefaultTableModel availablesModel = new DefaultTableModel(null, availablesModelHeader){
public Class<?> getColumnClass(int columnIndex) {
return getValueAt(0, columnIndex).getClass();
};
};// per aggiungere jCheckBox, jComboBox e ImageIcon
// My third-part software: a JADE agent:
protected ShipperAgent shipperAgent;
private Coordinator parkCoordinator;
private Coordinator availablesCoordinator;
////////////////////////////////////////////////////
// COSTRUTTORE
ShipperAgentGUI(ShipperAgent agent) {
// Valorizza l'agente corrispondente
shipperAgent = agent;
///////////////////////////////////////////////////////////////////////
// Graphics:
//
setTitle("Shipper Agent: "+agent.getLocalName());
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
try {
UIManager.setLookAndFeel("javax.swing.plaf.nimbus.NimbusLookAndFeel");
//UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException
| IllegalAccessException | UnsupportedLookAndFeelException e) {
e.printStackTrace();
}
// MasterPanel
masterPanel = new JPanel();
masterPanel.setLayout(new BoxLayout(masterPanel, BoxLayout.Y_AXIS));
masterPanel.setComponentOrientation(ComponentOrientation.LEFT_TO_RIGHT);
// Park Panel
JPanel parkPanel = new JPanel();
parkPanel.setLayout(new BoxLayout(parkPanel, BoxLayout.Y_AXIS));
masterPanel.add(parkPanel);
JPanel pnlHeaderParkPanel = new JPanel(new FlowLayout(FlowLayout.LEFT));
JLabel parkLabel = new JLabel("Parco auto:");
pnlHeaderParkPanel.add(parkLabel);
parkPanel.add(pnlHeaderParkPanel);
JPanel pnlTableParkPanel = new JPanel();
pnlTableParkPanel.setLayout(new BoxLayout(pnlTableParkPanel, BoxLayout.X_AXIS));
parkPanel.add(pnlTableParkPanel);
// Park Table
parkTable = new JTable();
parkTable.setModel(parkModel);
parkTable.setPreferredScrollableViewportSize(new Dimension(500,100));
parkTable.setFillsViewportHeight(true);
JScrollPane parkScrollPane = new JScrollPane(parkTable);
pnlTableParkPanel.add(parkScrollPane);
JPanel pnlBtnParkPanel = new JPanel();
pnlTableParkPanel.add(pnlBtnParkPanel);
pnlBtnParkPanel.setLayout(new BoxLayout(pnlBtnParkPanel, BoxLayout.Y_AXIS));
// JButtons: add/remove vehicle in Park Table
btnPM_plus = new JButton();
btnPM_plus.setToolTipText("Aggiungi mezzo");
btnPM_plus.setIcon(new ImageIcon(ShipperAgentGUI.class.getResource("/images/lorry-add.png")));
btnPM_plus.setActionCommand("+parco");
btnPM_plus.addActionListener(this);
pnlBtnParkPanel.add(btnPM_plus);
btnPM_meno = new JButton();
btnPM_meno.setToolTipText("Rimuovi mezzo");
btnPM_meno.setIcon(new ImageIcon(ShipperAgentGUI.class.getResource("/images/lorry-delete.png")));
btnPM_meno.setActionCommand("-parco");
btnPM_meno.addActionListener(this);
pnlBtnParkPanel.add(btnPM_meno);
// Arrow Panel
JPanel arrowPanel = new JPanel();
masterPanel.add(arrowPanel);
// JButtons: available or not vehicle
btnMD_plus = new JButton();
btnMD_plus.setToolTipText("Rendi disponibile il mezzo selezionato");
btnMD_plus.setIcon(new ImageIcon(ShipperAgentGUI.class.getResource("/images/arrow-green-down.png")));
arrowPanel.add(btnMD_plus);
btnMD_plus.setActionCommand("+disponibili");
btnMD_plus.addActionListener(this);
btnMD_meno = new JButton();
btnMD_meno.setToolTipText("Rendi indisponibile il mezzo selezionato");
btnMD_meno.setIcon(new ImageIcon(ShipperAgentGUI.class.getResource("/images/arrow-red-up.png")));
arrowPanel.add(btnMD_meno);
btnMD_meno.setActionCommand("-disponibili");
btnMD_meno.addActionListener(this);
// Availables Panel
JPanel availablesPanel = new JPanel();
masterPanel.add(availablesPanel);
availablesPanel.setLayout(new BoxLayout(availablesPanel, BoxLayout.Y_AXIS));
JPanel pnlHeaderAvailablesPanel = new JPanel();
FlowLayout fl_pnlHeaderAvailablesPanel = (FlowLayout) pnlHeaderAvailablesPanel.getLayout();
fl_pnlHeaderAvailablesPanel.setAlignment(FlowLayout.LEFT);
availablesPanel.add(pnlHeaderAvailablesPanel);
JLabel label_1 = new JLabel("Disponibili:");
pnlHeaderAvailablesPanel.add(label_1);
label_1.setHorizontalAlignment(SwingConstants.LEFT);
// Available Table
availablesTable = new JTable();
availablesTable.setModel(availablesModel);
availablesTable.setPreferredScrollableViewportSize(new Dimension(500, 100));
availablesTable.setFillsViewportHeight(true);
JScrollPane availablesScrollPane = new JScrollPane(availablesTable);
availablesPanel.add(availablesScrollPane);
getContentPane().add(masterPanel, BorderLayout.CENTER);
// Search Panel
JPanel searchPanel = new JPanel();
masterPanel.add(searchPanel);
JButton btnSearch = new JButton("Search");
searchPanel.add(btnSearch);
// End of graphics init
///////////////////////////////////
//////////////////////////////////////
// Editor delle colonne delle tabelle
// TODO
JComboBox<TipoVeicolo> tipoVeicoloComboBox = new JComboBox<TipoVeicolo>();
tipoVeicoloComboBox.setModel(new DefaultComboBoxModel<TipoVeicolo>(TipoVeicolo.values()));
JComboBox<Stato> statoComboBox = new JComboBox<Stato>();
statoComboBox.setModel(new DefaultComboBoxModel<Stato>(Stato.values()));
TableColumn tipoVeicoloColumn = parkTable.getColumnModel().getColumn(2);
TableColumn statoColumn = parkTable.getColumnModel().getColumn(4);
tipoVeicoloColumn.setCellEditor(new DefaultCellEditor(tipoVeicoloComboBox));
statoColumn.setCellEditor(new DefaultCellEditor(statoComboBox));
/////////////////////////////////////////////////////////////////////
// Coordinators (ispirati al Mediator pattern)
parkCoordinator = new Coordinator(shipperAgent, parkModel) {
@Override
public void notifyAndAddRow(final Object[] rowData) {
shipperAgent.newTruck((String) rowData[0]);
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
tableModel.addRow(rowData);
}
});
}
@Override
public void notifyAndDeleteRow(final int rowIndex) {
final String truck = (String)this.tableModel.getValueAt(rowIndex, 0);
int flag=search(availablesCoordinator.tableModel, truck);
if (flag!=-1)
removeVehicle(availablesCoordinator, flag);
shipperAgent.removeTruck(truck);
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
tableModel.removeRow(rowIndex);
}
});
}
};
availablesCoordinator = new Coordinator(shipperAgent, availablesModel) {
@Override
public void notifyAndAddRow(final Object[] rowData) {
shipperAgent.activateTruck((String) rowData[0]);
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
tableModel.addRow(rowData);
}
});
}
@Override
public void notifyAndDeleteRow(final int rowIndex) {
String truck = (String)this.tableModel.getValueAt(rowIndex, 1);
shipperAgent.deactivateTruck(truck);
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
tableModel.removeRow(rowIndex);
}
});
}
};
/////////////////////////////////////////////////////
// Listeners:
parkModel.addTableModelListener(parcoListener);
availablesModel.addTableModelListener(mezziDisponibiliListener);
/////////////////////////////////////////////////////
// Contatto con l'agente - Riempimento dati
// TODO
Object[] veicoli = shipperAgent.getVehicles();
for (int i=0; i<veicoli.length;i++){
Object[] info = (Object[]) veicoli[i];
Object[] veicolo = new Object[info.length+1];
veicolo[0] = new ImageIcon(ShipperAgentGUI.class.getResource("/images/lorry-icon.png"));
for (int j=1;j<info.length+1;j++){
veicolo[j]=info[j-1];
}
parkModel.addRow(veicolo);
if ( veicolo[4] == Stato.DISPONIBILE )
availablesModel.addRow(veicolo);
}
////////////////////////////
// Show GUI
showGui();
}
public void showGui() {
pack();
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
int centerX = (int) screenSize.getWidth() / 2;
int centerY = (int) screenSize.getHeight() / 2;
setLocation(centerX - getWidth() / 2, centerY - getHeight() / 2);
super.setVisible(true);
}
//////////////////////////////////////////////
// actionPerformed
@Override
public void actionPerformed(ActionEvent e) {
switch (e.getActionCommand()) {
case "+parco": {
new VehicleInsertJDialog(this, parkCoordinator);
} break;
case "-parco": {
int selectedRow = parkTable.getSelectedRow();
if (selectedRow != -1)
removeVehicle(parkCoordinator, selectedRow);
} break;
case "+disponibili": {
int selectedRow = parkTable.getSelectedRow();
if (selectedRow != -1){
//TODO controlla la consistenza
addVehicle(availablesCoordinator,
String.valueOf(parkModel.getValueAt(selectedRow, 0)),
String.valueOf(parkModel.getValueAt(selectedRow, 1)),
String.valueOf(parkModel.getValueAt(selectedRow, 2)),
String.valueOf(parkModel.getValueAt(selectedRow, 3)),
String.valueOf(parkModel.getValueAt(selectedRow, 4))
);
}
} break;
case "-disponibili": {
int selectedRow = availablesTable.getSelectedRow();
if (selectedRow != -1)
removeVehicle(availablesCoordinator, selectedRow);
} break;
default:
System.out.println("Imprevisto in actionPerformed()");
break;
}
}
// /////////////////////////////////////
// Add/Remove vehicles methods
public void addVehicle(Coordinator coordinator,
String targa, String tipo, String marca, String stato, String peso) {
coordinator.notifyAndAddRow(new Object[]{targa, tipo, marca, stato, peso});
}
public void removeVehicle(Coordinator coordinator, int index) {
coordinator.notifyAndDeleteRow(index);
}
// //////////////////////////////////////////
// LISTENER:
TableModelListener parcoListener = new TableModelListener() {
public void tableChanged(TableModelEvent e) {
switch (e.getType()) {
case (TableModelEvent.INSERT):
System.out.println("un inserimento in corso!"); break;
case (TableModelEvent.DELETE):
System.out.println("una cancellazione in corso!"); break;
case (TableModelEvent.UPDATE):
System.out.println("un aggiornamento in corso!"); break;
}
}
};
TableModelListener mezziDisponibiliListener = new TableModelListener() {
public void tableChanged(TableModelEvent e) {
switch (e.getType()) {
case (TableModelEvent.INSERT):
System.out.println("un inserimento in corso!"); break;
case (TableModelEvent.DELETE):
System.out.println("una cancellazione in corso!"); break;
case (TableModelEvent.UPDATE):
System.out.println("un aggiornamento in corso!"); break;
}
}
};
private int search(DefaultTableModel tableModel, String targa) {
int flag = -1;
for (int i=0; i<tableModel.getRowCount(); i++)
if (tableModel.getValueAt(i, 0).equals(targa))
flag=i;
return flag;
}
///////////////////////////////////////
// INNER CLASS
///////////////////////////////////////
protected abstract class Coordinator {
/*
* protected class members so subclasses can access these directly
*/
protected ShipperAgent shipperAgent;
protected DefaultTableModel tableModel;
public Coordinator(ShipperAgent sa, DefaultTableModel tm) {
shipperAgent = sa;
tableModel = tm;
}
public abstract void notifyAndAddRow(Object[] rowData);
public abstract void notifyAndDeleteRow(int rowIndex);
}
}
解决方法:
“I want know a way for use a Icon in jTable but DON’T want handle the icon like a part of the informations. I want that the jTable realizes by itself the kind of vehicle and change the icon of conseguency”
您将很难做到这一点：
Object[] vehicle = {"aaa", "kind1", "marca", "disponibile", "ptt" };
最好将另一个与图像列的值一起使用.请记住,您可以具有空值.
首先,这是：
Object[] vehicle = {"/image/truck.png" ,"aaa", "kind1",
"marca", "disponibile", "ptt" };
可以这样
Object[] vehicle = {new ImageIcon(...) ,"aaa", "kind1",
"marca", "disponibile", "ptt" }
由于重写了getColumnClass(),因此默认的渲染器会将列渲染为图像,因为将检测到ImageIcon.class.参见How to use Tables: Editors and Renderers.
对于主要问题,如何根据车辆更换类型动态更改图像,可以覆盖表模型的setValueAt.就像是
DefaultTableModel model = new DefaultTableModel(...) {
private static final int CAR_TYPE_COLUMN = 2;
private static final int IMAGE_COLUMN = 0;
@Override
public void setValueAt(Object value, int row, int col) {
if (col == CAR_TYPE_COLUMN) {
ImageIcon icon = findImageByColumnCarType(value);
super.setValueAt(icon, row, IMAGE_COLUMN);
}
super.setValueAt(value, row, col);
}
public Class<?> getColumnClass(int columnIndex) {
return getValueAt(0, columnIndex).getClass();
}
};
findImageByColumnCarType是根据该值查找ImageIcon的某种方法. setValueAt将由编辑器(在您的情况下为组合框)调用.因此,当设置该值时,组合框的值将传递给setValueAt,您可以使用它来调用方法findImageByColumnCarType以获取ImageIcon.您可能有一个Map或用来保存图标和相应值的东西.您可以让没有图像的汽车类型的方法返回null
拥有所需的ImageIcon后,只需调用super.setValueAt即可为同一行的图像列设置新图标.
标签：defaulttablemodel,tablemodel,java,swing,jtable 来源： https://codeday.me/bug/20191010/1883404.html