用Java制作一个简单的QQ聊天界面

用Java制作一个简单的QQ聊天界面

第一次写博客

这是一开始学习Java时候用Java制作一个简单的QQ聊天界面

成品图

Java用来设计GUI图形界面设计是非常方便的，

下面是代码

package demo;
import java.awt.event.*;
import javax.swing.*;
import java.awt.*;
public class P extends JFrame {
	JButton sendBt;
	JTextField inputField;
	JTextArea chatContent;
	public P(){
		this.setLayout(new BorderLayout());
		chatContent =new JTextArea(12,34);
		JScrollPane showPanel = new JScrollPane(chatContent);
		chatContent.setEditable(false);
		JPanel inputPanel = new JPanel();
		inputField = new JTextField(20);
		sendBt = new JButton("发送");
		JMenuBar menuBar= new JMenuBar();
		this.setJMenuBar(menuBar);
		JMenu menu =new JMenu("管理");
		menuBar.add(menu);
		JMenuItem item1 = new JMenuItem("弹出窗口");
		JMenuItem item2 = new JMenuItem("关闭");
		sendBt.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e){
				String content = inputField.getText();
				if(content != null && !content.trim().equals("")){
					chatContent.append("我:"+content+"\n");
				}else{
					chatContent.append("聊天内容不能为空"+"\n");
				}
				inputField.setText("");
			}
		});
		item1.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e){
				 final JDialog dialog = new JDialog(P.this,true);
				dialog.setTitle("弹出窗口");
				dialog.setSize(200,200);
				dialog.setLocation(50,50);
				dialog.setLayout(new FlowLayout());
				JButton btn1 = new JButton("确定");
				dialog.add(btn1);
				final JLabel label = new JLabel();
				dialog.add(label);
				label.setText("点击确定，关闭该对话框");
				btn1.addActionListener(new ActionListener(){
					public void actionPerformed(ActionEvent e){
					dialog.dispose();
				}
				});
				dialog.setVisible(true);
			}
		});
		
		item2.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e){
				System.exit(0);
				
			}
		});
		
		Label label =new Label("输入");
		inputPanel.add(label);
		inputPanel.add(inputField);
		inputPanel.add(sendBt);
		this.add(showPanel,BorderLayout.CENTER);
		this.add(inputPanel,BorderLayout.SOUTH);
		this.setTitle("JAVA窗口");
		menu.add(item1);
		menu.addSeparator();
		menu.add(item2);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		this.setSize(500,300);
		this.setVisible(true);

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

	}

}