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法律学如何防止调整 JTable 中的列大小
要防止调整列大小，可使用 setResizingAllowed() 方法。在此处，我们对于表头将把 setResizingAllowed() 设置为 false，以禁止调整列头中的列大小 −
table.getTableHeader().setResizingAllowed(false);
我们先来看一个示例，其中我们可以通过调整表格列头来轻松调整表格中的列大小 −
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("Language/ Technology");
tableModel.addColumn("Text Tutorial");
tableModel.addColumn("Video Tutorial");
tableModel.addColumn("Views");
tableModel.addRow(new Object[] { "F#", "Yes", "No", "7890"});
tableModel.addRow(new Object[] { "Blockchain", "Yes", "No", "10600"});
tableModel.addRow(new Object[] { "SharePoint", "Yes", "Yes", "4900"});
tableModel.addRow(new Object[] { "AWS", "No", "Yes", "8900"});
tableModel.addRow(new Object[] { "Python", "Yes", "No", "6789"});
tableModel.addRow(new Object[] { "Scala", "Yes", "No", "3400"});
tableModel.addRow(new Object[] { "Swift", "No", "Yes", "9676"});
tableModel.addRow(new Object[] { "C#", "Yes", "Yes", "1300"});
tableModel.addRow(new Object[] { "NodeJS", "No", "Yes", "2350"});
tableModel.addRow(new Object[] { "MVC", "Yes", "No", "1500"});
tableModel.addRow(new Object[] { "ASP.NET", "Yes", "Yes", "3400"});
tableModel.addRow(new Object[] { "Java", "Yes", "No", "9686"});
tableModel.addRow(new Object[] { "jQuery", "Yes", "Yes", "4500"});
table.setBackground(Color.white);
table.setForeground(Color.black);
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);
}
}结果如下，表明我们成功调整了列“文字教程”，使其与其他列具有不同的大小。我们调整了列头 −
输出结果
以下是一个示例，其中我们阻止用户调整列的大小。我们将 FALSE 设置为 setResizingAllowed() 方法 −
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("Language/ Technology");
tableModel.addColumn("Text Tutorial");
tableModel.addColumn("Video Tutorial");
tableModel.addColumn("Views");
table.getTableHeader().setResizingAllowed(false);
tableModel.addRow(new Object[] { "F#", "Yes", "No", "7890"});
tableModel.addRow(new Object[] { "Blockchain", "Yes", "No", "10600"});
tableModel.addRow(new Object[] { "SharePoint", "Yes", "Yes", "4900"});
tableModel.addRow(new Object[] { "AWS", "No", "Yes", "8900"});
tableModel.addRow(new Object[] { "Python", "Yes", "No", "6789"});
tableModel.addRow(new Object[] { "Scala", "Yes", "No", "3400"});
tableModel.addRow(new Object[] { "Swift", "No", "Yes", "9676"});
tableModel.addRow(new Object[] { "C#", "Yes", "Yes", "1300"});
tableModel.addRow(new Object[] { "NodeJS", "No", "Yes", "2350"});
tableModel.addRow(new Object[] { "MVC", "Yes", "No", "1500"});
tableModel.addRow(new Object[] { "ASP.NET", "Yes", "Yes", "3400"});
tableModel.addRow(new Object[] { "Java", "Yes", "No", "9686"});
tableModel.addRow(new Object[] { "jQuery", "Yes", "Yes", "4500"});
table.setBackground(Color.white);
table.setForeground(Color.black);
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);
}
}结果如下，显示所有列的默认大小，我们无法调整它们，因为我们已将表大小调整为 FALSE −
输出结果
更新日期：2019-07-30
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