选中时如何显示JTable一行的信息？
我将简要解释我正在尝试做什么，然后发布我创建的 SSCCE，以防我的任何解释令人困惑。
我希望能够单击表格中的任何行并在面板上显示该信息。我不确定我需要利用什么来完成工作。
我想我需要使用：
table.getSelectedRow()MouseListener()ListSelectionListener()
我以前没有使用过 Listeners，所以我只知道那些来自阅读文章/文档，同时研究我需要做什么才能完成工作。
对于如何在我的 JPanel 上显示信息，我也有些困惑。面板是在主类中创建的，而表是在其自己的类中创建的。
我感谢任何帮助和建议。
示例来源：
import javax.swing.JFrame;
import javax.swing.JSplitPane;
import javax.swing.SwingUtilities;
import java.awt.BorderLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableModel;
public class SwingTesting {
private final JFrame frame;
private final TablePane tablePane;
private final JSplitPane splitPane;
private final JPanel infoPanel;
public SwingTesting() {
tablePane = new TablePane();
infoPanel = new JPanel();
frame = new JFrame();
splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, tablePane, infoPanel);
frame.add(splitPane);
frame.pack();
frame.setVisible(true);
}
class TablePane extends JPanel {
private final JTable table;
private final TableModel tableModel;
private final ListSelectionModel listSelectionModel;
public TablePane() {
table = new JTable();
tableModel = createTableModel();
table.setModel(tableModel);
table.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
table.add(table.getTableHeader(), BorderLayout.PAGE_START);
table.setFillsViewportHeight(true);
listSelectionModel = table.getSelectionModel();
table.setSelectionModel(listSelectionModel);
listSelectionModel.addListSelectionListener(new SharedListSelectionHandler());
table.setSelectionModel(listSelectionModel);
this.setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.anchor = GridBagConstraints.NORTHWEST;
gbc.fill = GridBagConstraints.BOTH;
gbc.gridx = 0;
gbc.gridy = 0;
gbc.gridheight = 1;
gbc.gridwidth = 3;
gbc.insets = new Insets(5, 5, 5, 5);
gbc.ipadx = 2;
gbc.ipady = 2;
gbc.weightx = 1;
gbc.weighty = 1;
this.add(new JScrollPane(table), gbc);
}
private TableModel createTableModel() {
DefaultTableModel model = new DefaultTableModel(
new Object[] {"Car", "Color", "Year"}, 0
){
@Override
public boolean isCellEditable(int row, int column) {
return false;
}
};
addTableData(model);
return model;
}
private void addTableData(DefaultTableModel model) {
model.addRow(new Object[] {"Nissan", "Black", "2007"});
model.addRow(new Object[] {"Toyota", "Blue", "2012"});
model.addRow(new Object[] {"Chevrolet", "Red", "2009"});
model.addRow(new Object[] {"Scion", "Silver", "2005"});
model.addRow(new Object[] {"Cadilac", "Grey", "2001"});
}
class SharedListSelectionHandler implements ListSelectionListener {
@Override
public void valueChanged(ListSelectionEvent e) {
ListSelectionModel lsm = (ListSelectionModel) e.getSource();
String contents = "";
if(lsm.isSelectionEmpty()) {
System.out.println("<none>");
} else {
int minIndex = lsm.getMinSelectionIndex();
int maxIndex = lsm.getMaxSelectionIndex();
for(int i = minIndex; i <= maxIndex; i++) {
if(lsm.isSelectedIndex(i)) {
for(int j = 0; j < table.getColumnCount(); j++) {
contents += table.getValueAt(i, j) + " ";
}
}
}
System.out.println(contents);
}
}
}
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new SwingTesting();
}
});
}
}
这并不像我想要的那样表现。它打印出双倍的信息。
所以不是Chevrolet Red 2009打印出来Chevrolet Red 2009 Chevrolet Red 2009。最终，我想将文本放在 JLabel 中并将其放在面板上。请记住，包含 JLabel 的面板与表格属于不同的类。
