如何在 Java 中使用 GridLayout 创建垂直按钮列?
java 8object oriented programmingprogramming
要创建垂直按钮列，我们首先创建一些按钮并设置布局 −
JPanel btnPanel = new JPanel(new GridLayout(10, 1, 10, 5));
btnPanel.add(new JButton("First Button"));
btnPanel.add(new JButton("Second Button"));
btnPanel.add(new JButton("Third Button"));
btnPanel.add(new JButton("Fourth Button"));
btnPanel.add(new JButton("Fifth Button"));
btnPanel.add(new JButton("Sixth Button"));
btnPanel.add(new JButton("Seventh Button"));
btnPanel.add(new JButton("Eighth Button"));
以上，我们设置了GridLayout，以创建具有垂直和水平间隙的行和列。
以下是使用GridLayout创建垂直按钮列的示例 −
示例
package my;
import java.awt.BorderLayout;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
public class SwingDemo {
public static void main(String[] args) {
JPanel panel = new JPanel(new BorderLayout());
panel.setBorder(new EmptyBorder(2, 3, 2, 3));
JPanel layout = new JPanel(new GridBagLayout());
layout.setBorder(new EmptyBorder(5, 5, 5, 5));
JPanel btnPanel = new JPanel(new GridLayout(10, 1, 10, 5));
btnPanel.add(new JButton("First Button"));
btnPanel.add(new JButton("Second Button"));
btnPanel.add(new JButton("Third Button"));
btnPanel.add(new JButton("Fourth Button"));
btnPanel.add(new JButton("Fifth Button"));
btnPanel.add(new JButton("Sixth Button"));
btnPanel.add(new JButton("Seventh Button"));
btnPanel.add(new JButton("Eighth Button"));
layout.add(btnPanel);
panel.add(layout, BorderLayout.CENTER);
JFrame frame = new JFrame("Demo");
frame.add(panel);
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.setLocationByPlatform(true);
frame.setSize(500, 400);
frame.setVisible(true);
}
}
输出
