import java.awt.*;
import javax.swing.*;
public class QQMain{
public static void main(String args[]){
JFrame w = new JFrame();
w.setSize(300, 400);
//new 组件
JTextField txtMess = new JTextField();
JComboBox cmbUser = new JComboBox();
JButton btnSend = new JButton("发送");
JTextArea txtContent = new JTextArea();
//设置滚动条
JScrollPane spContent = new JScrollPane(txtContent);
//布置小面板
JPanel panSmall = new JPanel();
panSmall.setLayout(new GridLayout(1,2));
panSmall.add(cmbUser);
panSmall.add(btnSend);
//布置大面板
JPanel panBig = new JPanel();
panBig.setLayout(new GridLayout(2, 1));
panBig.add(txtMess);
panBig.add(panSmall);
//布置窗体
w.setLayout(new BorderLayout());
w.add(panBig, BorderLayout.NORTH);
w.add(spContent, BorderLayout.CENTER);
w.setVisible(true);
}
}
