当在 Java Swing 中更改列宽时，如何仅对 JTable 的下一列应用调整？

要仅对下一列应用调整，请使用 setAutoResizeMode 并设置模式。此处的模式将是 AUTO_RESIZE_NEXT_COLUMN。即使拖动任何列头进行调整大小，这也会允许你仅调整下一列。

我们先来看一个创建表的示例 -

示例

package my;
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 next column only
      table.setAutoResizeMode(JTable.AUTO_RESIZE_NEXT_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);
   }
}