reol44
2021-02-18 22:51
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java 怎么使用Swing的JScrollPane写出一个聊天信息显示的效果

学习java stocket时,试着用stocket写了一个聊天室,在使用swing写界面时,设想是用JScrollPane来显示消息记录的,可是写完发现在JSrollPane里面不能用绝对布局,求怎么达到 自己的消息显示在右边, 别人消息显示在左边,按时间排下来的效果

大概长这样

 

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  • allway2 2021-02-19 07:50
    已采纳 
    import java.awt.BorderLayout;
import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JLabel;

public class JScrollPaneDemo extends JFrame {

	private JPanel contentPane;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					JScrollPaneDemo frame = new JScrollPaneDemo();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public JScrollPaneDemo() {
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 400, 286);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);

		JScrollPane scrollPane = new JScrollPane();
		scrollPane.setBounds(26, 46, 352, 131);
		contentPane.add(scrollPane);
		
		JPanel panel = new JPanel();
		scrollPane.setViewportView(panel);
		panel.setLayout(null);
		
		JLabel lblNewLabel = new JLabel("New label");
		lblNewLabel.setBounds(0, 10, 54, 15);
		panel.add(lblNewLabel);
		
		JLabel lblNewLabel_1 = new JLabel("New label");
		lblNewLabel_1.setBounds(286, 37, 54, 15);
		panel.add(lblNewLabel_1);
		
		JLabel lblNewLabel_2 = new JLabel("New label");
		lblNewLabel_2.setBounds(0, 64, 54, 15);
		panel.add(lblNewLabel_2);
		
		JLabel lblNewLabel_3 = new JLabel("New label");
		lblNewLabel_3.setBounds(286, 92, 54, 15);
		panel.add(lblNewLabel_3);
		
		JLabel lblNewLabel_4 = new JLabel("New label");
		lblNewLabel_4.setBounds(0, 114, 54, 15);
		panel.add(lblNewLabel_4);


	}
}
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