JPanel面板

Java Swing布局实践

最新推荐文章于 2021-02-27 22:10:40 发布

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本文介绍了一个使用Java Swing创建GUI的应用实例。通过不同类型的面板(JPanel)和布局管理器(如GridLayout和BorderLayout)，展示了如何组织按钮组件(JButton)。此示例有助于理解Swing中布局管理的基本概念。

package jpanel;

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.GridLayout;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.WindowConstants;

public class JPanelTest extends JFrame{
	
    public JPanelTest() {
		Container c = getContentPane();
		c.setLayout(new GridLayout(2,1,10,10));
		JPanel p1=new JPanel(new GridLayout(1,3,10,10));
		JPanel p2=new JPanel(new BorderLayout());
		JPanel p3=new JPanel(new GridLayout(1,2,10,10));
		JPanel p4=new JPanel(new GridLayout(2,1,10,10));
		p1.setBorder(BorderFactory.createTitledBorder("面板1"));
		p2.setBorder(BorderFactory.createTitledBorder("面板2"));
		p3.setBorder(BorderFactory.createTitledBorder("面板3"));
		p4.setBorder(BorderFactory.createTitledBorder("面板4"));
		//在面板中添加按钮
		p1.add(new JButton("b1"));
		p1.add(new JButton("b1"));
		p1.add(new JButton("b1"));
		p1.add(new JButton("b1"));
		
		p2.add(new JButton("b2"),BorderLayout.WEST);
		p2.add(new JButton("b2"),BorderLayout.EAST);
		p2.add(new JButton("b2"),BorderLayout.NORTH);
		p2.add(new JButton("b2"),BorderLayout.SOUTH);
		p2.add(new JButton("b2"));
		
		p3.add(new JButton("b3"));
		p3.add(new JButton("b3"));
		
		p4.add(new JButton("b4"));
		p4.add(new JButton("b4"));
		//在容器中添加面板
		c.add(p1);
		c.add(p2);
		c.add(p3);
		c.add(p4);
		setTitle("在这个窗体中使用了面板");
		setSize(500, 300);
		setVisible(true);
		setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
	}

	public static void main(String[] args) {
		new JPanelTest();

	}

}