如何在Swing程序为JPanel添加标题边框

说明

以下示例展示了如何在Swing程序为JPanel添加标题边框。

我们正在使用以下 API。

• BorderFactory.createTitledBorder() ： 创建有标题的边框。

• JPanel.setBorder(border) ： 将所需的边框设置为 JPanel。

代码示例

package com.yiidian;

import javax.swing.*;
import javax.swing.border.Border;
import java.awt.*;

public class SwingTester {

   public static void main(String[] args) {
      createWindow();
   }

   private static void createWindow() {    
      JFrame frame = new JFrame("一点教程网：Swing Tester");
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

      createUI(frame);
      frame.setSize(560, 200);      
      frame.setLocationRelativeTo(null);  
      frame.setVisible(true);
   }

   private static void createUI(JFrame frame){
      //Create a border
      Border blackline = BorderFactory.createTitledBorder("Title");
      JPanel panel = new JPanel();
      LayoutManager layout = new FlowLayout();
      panel.setLayout(layout);       

      JPanel panel1 = new JPanel();
      String spaces = "                   ";

      panel1.add(new JLabel(spaces + "Title border to JPanel" + spaces));  
      panel1.setBorder(blackline);

      panel.add(panel1);
      frame.getContentPane().add(panel, BorderLayout.CENTER);    
   }
}

执行效果如下：