如何在 Java Swing 中僅當更改任何一列的寬度時，將調整應用到 JTable 的最後一列？

若僅對最後一列應用調整，請使用 setAutoResizeMode 並設定模式。此處的模式應為 AUTO_RESIZE_LAST_COLUMN。這將允許你僅調整最後一列，即使任何一個列標題被拖動來調整大小。

我們首先來看一個在 Java 中建立表的示例 −

示例

package my;
import java.awt.Color;
import java.awt.Font;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
public class SwingDemo {
   public static void main(String[] argv) throws Exception {
      DefaultTableModel tableModel = new DefaultTableModel();
      JTable table = new JTable(tableModel);
      tableModel.addColumn("Technology");
      tableModel.addColumn("BCA");
      tableModel.addColumn("MCA");
      tableModel.addColumn("Lectures");
      // applying adjustments to the last column only
      table.setAutoResizeMode(JTable.AUTO_RESIZE_LAST_COLUMN);
      tableModel.addRow(new Object[] { "F#", "Yes", "No", "20"});
      tableModel.addRow(new Object[] { "Blockchain", "Yes", "No", "30"});
      tableModel.addRow(new Object[] { "SharePoint", "Yes", "Yes", "25"});
      tableModel.addRow(new Object[] { "AWS", "No", "Yes", "25"});
      tableModel.addRow(new Object[] { "Python", "Yes", "No", "20"});
      tableModel.addRow(new Object[] { "Scala", "Yes", "No", "30"});
      tableModel.addRow(new Object[] { "Swift", "No", "Yes", "35"});
      tableModel.addRow(new Object[] { "C#", "Yes", "Yes", "50"});
      tableModel.addRow(new Object[] { "NodeJS", "No", "Yes", "40"});
      tableModel.addRow(new Object[] { "MVC", "Yes", "No", "30"});
      tableModel.addRow(new Object[] { "ASP.NET", "Yes", "Yes", "35"});
      tableModel.addRow(new Object[] { "Java", "Yes", "No", "55"});
      tableModel.addRow(new Object[] { "jQuery", "Yes", "Yes", "30"});
      Font font = new Font("Verdana", Font.PLAIN, 12);
      table.setFont(font);
      JFrame frame = new JFrame();
      frame.setSize(600, 400);
      frame.add(new JScrollPane(table));
      frame.setVisible(true);
   }
}