如何在JTable中选择行或列?

时间:2019-04-10 01:14:29

标签: java swing jtable

默认情况下,在JTable中,如果选择一个单元格,则会选择该单元格的整个行。我想保留此功能。

但是,默认情况下,标题(每列上方)中的按钮不起作用。我希望能够单击其中之一,并突出显示整个列(并且我不想摆脱通过这样做来选择整个行的功能)

我该怎么做?

1 个答案:

答案 0 :(得分:1)

https://kodejava.org/how-do-i-allow-row-or-column-selection-in-jtable/找到了另一个示例:

“要在JTable组件中允许行选择或列选择,或者行和列同时选择,我们可以通过调用JTable的 setRowSelectionAllowed()和JTable的< strong> setColumnSelectionAllowed()方法。

这两种方法均接受布尔值值,该值指示是否允许选择。 将它们都设置为true允许我们从JTable中选择行和列。”

package org.kodejava.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());
    // sets to false to disallow row selection in the table
    // model.
    table.setRowSelectionAllowed(false);

    // Sets to true to allow column selection in the table
    // model.
    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's column names
    private String[] columnNames = {
        "TEAM", "P", "W", "D", "L", "GS", "GA", "GD", "PTS"
    };

    // TableModel's data
    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];
    }
 }
}