Java如何在JTable中允许选择行或列？
为了使行选择或列选择或行和列选择JTable组件，我们可以通过调用打开和关闭JTable的setRowSelectionAllowed()和JTable的setColumnSelectionAllowed()方法。
这两种方法都接受一个boolean值，该值指示是否允许选择。设置它们两者以true允许我们从中选择行和列JTable。
package org.nhooo.example.swing;
import javax.swing.*;
import javax.swing.table.AbstractTableModel;
import java.awt.*;
public class TableAllowColumnSelection extends JPanel {
public TableAllowColumnSelection() {
initializePanel();
}
private void initializePanel() {
this.setLayout(new BorderLayout());
this.setPreferredSize(new Dimension(500, 150));
JTable table = new JTable(new PremiereLeagueTableModel());
//设置为false以禁止在表中选择行
//模型。
table.setRowSelectionAllowed(false);
//设置为true以允许在表中选择列
//模型。
table.setColumnSelectionAllowed(true);
JScrollPane pane = new JScrollPane(table);
this.add(pane, BorderLayout.CENTER);
}
public static void showFrame() {
JPanel panel = new TableAllowColumnSelection();
panel.setOpaque(true);
JFrame frame = new JFrame("JTable Column Selection");
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.setContentPane(panel);
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
TableAllowColumnSelection.showFrame();
}
});
}
class PremiereLeagueTableModel extends AbstractTableModel {
//TableModel的列名
private String[] columnNames = {
"TEAM", "P", "W", "D", "L", "GS", "GA", "GD", "PTS"
};
//TableModel的数据
private Object[][] data = {
{ "Liverpool", 3, 3, 0, 0, 7, 0, 7, 9 },
{ "Tottenham", 3, 3, 0, 0, 8, 2, 6, 9 },
{ "Chelsea", 3, 3, 0, 0, 8, 3, 5, 9 },
{ "Watford", 3, 3, 0, 0, 7, 2, 5, 9 },
{ "Manchester City", 3, 2, 1, 0, 9, 2, 7, 7 }
};
public int getRowCount() {
return data.length;
}
public int getColumnCount() {
return columnNames.length;
}
public Object getValueAt(int rowIndex, int columnIndex) {
return data[rowIndex][columnIndex];
}
}
}