import java.awt.BorderLayout;
import java.awt.Toolkit;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

public class MyFrame extends JFrame {

private JLabel lab_name;
private JLabel lab_number;
private JLabel lab_amount;
private JTextField jtf_name;
private JTextField jtf_number;
private JTextField jtf_amount;

private JButton but_1;
private JButton but_2;
private JButton but_3;

public MyFrame(){
setSize(245, 260);
setTitle("JLabel Demo");

Toolkit tk = Toolkit.getDefaultToolkit();
setLocation((tk.getScreenSize().height - this.HEIGHT)/2,
(tk.getScreenSize().width - this.WIDTH)/2);

this.setLayout(null);

lab_name = new JLabel("姓名");
lab_number = new JLabel("學(xué)號");
lab_amount = new JLabel("金額");

jtf_name = new JTextField(13);
jtf_number = new JTextField(13);
jtf_amount = new JTextField(13);

JPanel jp_top = new JPanel();
jp_top.setBounds(0, 20, 245, 100);
jp_top.setLayout(new BorderLayout());
JPanel jp_top_name = new JPanel();
JPanel jp_top_number = new JPanel();
JPanel jp_top_amount = new JPanel();

jp_top_name.add(lab_name);
jp_top_name.add(jtf_name);
jp_top_number.add(lab_number);
jp_top_number.add(jtf_number);
jp_top_amount.add(lab_amount);
jp_top_amount.add(jtf_amount);

jp_top.add(jp_top_name,BorderLayout.NORTH);
jp_top.add(jp_top_number,BorderLayout.CENTER);
jp_top.add(jp_top_amount,BorderLayout.SOUTH);

JPanel jp_bottom = new JPanel();
jp_bottom.setBounds(0,150, 245, 90);
but_1 = new JButton("提交");
but_2 = new JButton("取消");
but_3 = new JButton("重寫");

jp_bottom.add(but_1);
jp_bottom.add(but_2);
jp_bottom.add(but_3);

this.add(jp_top,BorderLayout.NORTH);
this.add(jp_bottom,BorderLayout.CENTER);

setVisible(true);
setResizable(false);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}

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

}

美化我不在行。

窗口用BoxLayout
加入兩個Panel
第一個Panel用BoxLayout
第二個Panel用FlowLaout
個人觀點(diǎn)~

Layout設(shè)置為null,用setbounds()慢慢布局吧,有點(diǎn)煩的