java 获取选中的行
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时间：2020-10-30 14:15:08 来源:igfitidea点击:
get the selected row
提问by Εφη Κολοκυθ?
Hello i want to select a row and after i click the button i want to display this line!
您好，我想选择一行，单击按钮后，我想显示这一行！
public class TableDemo extends JPanel {
static List<String[]> rosterList = new ArrayList<String[]>();
int[] rowIndices;
public TableDemo() {
super(new BorderLayout(3, 3));
final JTable table = new JTable(new MyTableModel());
table.setPreferredScrollableViewportSize(new Dimension(500, 70));
table.setFillsViewportHeight(true);
final JButton button = new JButton("Buy it");
JPanel buttonCenter = new JPanel(new FlowLayout(FlowLayout.CENTER));
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (table.getColumnSelectionAllowed()
&& !table.getRowSelectionAllowed()) {
// Column selection is enabled
// Get the indices of the selected columns
int[] vColIndices = table.getSelectedColumns();
} else if (!table.getColumnSelectionAllowed()
&& table.getRowSelectionAllowed()) {
// Row selection is enabled
// Get the indices of the selected rows
rowIndices = table.getSelectedRows();
}
if (rowIndices.length > 0) {
for (int i = 0; i <= rowIndices.length; i++) {
System.out.println(rowIndices[i]);
}
}
}
});
}
});
buttonCenter.add(button);
add(buttonCenter, BorderLayout.SOUTH);
//Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(table);
//Add the scroll pane to this panel.
add(scrollPane, BorderLayout.CENTER);
//create a button
// add a nice border
setBorder(new EmptyBorder(5, 5, 5, 5));
}
class MyTableModel extends AbstractTableModel {
private String[] columnNames = {
"Κωδικ??", "Ποσ?τητα", "Τιμ?", "Περιγραφ?", "Μ?γεθο?", "Ρ?τσα"
};
public int getColumnCount() {
return columnNames.length;
}
public int getRowCount() {
return rosterList.size();
}
@Override
public String getColumnName(int col) {
return columnNames[col];
}
public Object getValueAt(int row, int col) {
return rosterList.get(row)[col];
}
}
private static void createAndShowGUI() {
//Create and set up the window.
JFrame frame = new JFrame("TableDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Create and set up the content pane.
TableDemo newContentPane = new TableDemo();
newContentPane.setOpaque(true); //content panes must be opaque
frame.setContentPane(newContentPane);
//Display the window.
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
creatArr();
createAndShowGUI();
}
});
}
private static void creatArr() {
BufferedReader br = null;
try {
br = new BufferedReader(new FileReader("Dogss.txt"));
String line = br.readLine();
while (line != null) {
String[] rowfields = line.split("#");
rosterList.add(rowfields);
line = br.readLine();
}
} catch (FileNotFoundException e) {
// can be thrown when creating the FileReader/BufferedReader
// deal with the exception
e.printStackTrace();
} catch (IOException e) {
// can be thrown by br.readLine()
// deal with the exception
e.printStackTrace();
}
}
}
回答by Howard
You can get the row number (starting from zero) with
您可以获得行号（从零开始）
table.getSelectedRow()
or with multiple selected rows via
或通过多个选定的行
table.getSelectedRows()
