您好我是一名新手java程序员，我目前正在eclipse中使用WindowBuilder创建一个java gui应用程序。
我有我喜欢的布局，源代码都在一个类中，我似乎无法正确浏览面板。 WindowBuilder中面板布局的图像链接 - http://postimg.org/image/xmnm9ilm1/
我想知道如何才能最好地布局代码，以及如何最好地浏览程序。 请记住，我不知道很多技术术语。
实现微软访问后端数据库的最佳方法是什么，可以在程序中编辑登录用户名，密码以及添加和删除项目？我目前有一个单独的数据库类。
谢谢
程序源代码如下所示
import java.awt.EventQueue;
import java.awt.Toolkit;
import javax.swing.JFrame;
import java.awt.CardLayout;
import javax.swing.JPanel;
import javax.swing.JLabel;
import java.awt.Font;
import javax.swing.JTextField;
import javax.swing.SwingConstants;
import javax.swing.JButton;
import java.awt.GridBagLayout;
import java.awt.GridBagConstraints;
import java.awt.Insets;
import java.awt.Color;
import javax.swing.JList;
import javax.swing.Box;
import java.awt.Panel;
import javax.swing.AbstractListModel;
import javax.swing.ListSelectionModel;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
public class UnivEPOS {
private JFrame frmUniveposV;
private JTextField textField;
private JTextField textField_1;
private JTextField textField_2;
private JTextField textField_3;
private JTextField textField_4;
private JTextField textField_5;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
UnivEPOS window = new UnivEPOS();
window.frmUniveposV.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the application.
*/
public UnivEPOS() {
initialize();
}
/**
* Initialize the contents of the frame.
*/
private void initialize() {
frmUniveposV = new JFrame();
frmUniveposV.setTitle("UnivEPOS v1.0");
frmUniveposV.setSize(Toolkit.getDefaultToolkit().getScreenSize());
frmUniveposV.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frmUniveposV.getContentPane().setLayout(new CardLayout(0, 0));
JPanel Login = new JPanel();
Login.setBackground(new Color(128, 0, 0));
frmUniveposV.getContentPane().add(Login, "name_244778779455709");
Login.setLayout(null);
JLabel lblLogin = new JLabel("LOGIN");
lblLogin.setForeground(new Color(255, 255, 255));
lblLogin.setFont(new Font("Tahoma", Font.BOLD, 18));
lblLogin.setBounds(10, 0, 60, 50);
Login.add(lblLogin);
textField = new JTextField();
textField.setBounds(518, 282, 262, 20);
Login.add(textField);
textField.setColumns(10);
textField_1 = new JTextField();
textField_1.setColumns(10);
textField_1.setBounds(518, 319, 262, 20);
Login.add(textField_1);
JLabel lblNewLabel = new JLabel("Username");
lblNewLabel.setForeground(new Color(255, 255, 255));
lblNewLabel.setFont(new Font("Tahoma", Font.BOLD, 16));
lblNewLabel.setBounds(416, 283, 92, 14);
Login.add(lblNewLabel);
JLabel lblPassword = new JLabel("Password");
lblPassword.setForeground(new Color(255, 255, 255));
lblPassword.setFont(new Font("Tahoma", Font.BOLD, 16));
lblPassword.setBounds(416, 320, 92, 14);
Login.add(lblPassword);
JButton btnNewButton = new JButton("ENTER");
btnNewButton.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent arg0) {
}
});
btnNewButton.setFont(new Font("Tahoma", Font.BOLD, 11));
btnNewButton.setBounds(691, 396, 89, 23);
Login.add(btnNewButton);
JButton btnNewButton_1 = new JButton("EXIT");
btnNewButton_1.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
}
});
btnNewButton_1.setFont(new Font("Tahoma", Font.BOLD, 11));
btnNewButton_1.setBounds(518, 396, 89, 23);
Login.add(btnNewButton_1);
JPanel Home = new JPanel();
Home.setBackground(new Color(128, 0, 0));
frmUniveposV.getContentPane().add(Home, "name_244789265918213");
Home.setLayout(null);
JLabel lblCurrentOrders = new JLabel("CURRENT ORDERS");
lblCurrentOrders.setForeground(new Color(255, 255, 255));
lblCurrentOrders.setBounds(535, 0, 346, 31);
lblCurrentOrders.setFont(new Font("Tahoma", Font.BOLD, 35));
Home.add(lblCurrentOrders);
JButton btnNewButton_2 = new JButton("Previous");
btnNewButton_2.setBounds(614, 598, 95, 31);
Home.add(btnNewButton_2);
JButton btnNewButton_3 = new JButton("Next");
btnNewButton_3.setBounds(731, 598, 95, 31);
Home.add(btnNewButton_3);
JButton btnNewButton_6 = new JButton("NEW ORDER");
btnNewButton_6.setBounds(10, 598, 244, 112);
btnNewButton_6.setFont(new Font("Tahoma", Font.BOLD, 18));
Home.add(btnNewButton_6);
JButton btnNewButton_4 = new JButton("Show Paid");
btnNewButton_4.setBounds(614, 632, 95, 31);
Home.add(btnNewButton_4);
JButton btnNewButton_5 = new JButton("Show Unpaid");
btnNewButton_5.setBounds(731, 632, 95, 31);
Home.add(btnNewButton_5);
JButton btnShowAll = new JButton("SHOW ALL");
btnShowAll.setBounds(658, 663, 131, 31);
Home.add(btnShowAll);
JButton btnAdmin = new JButton("ADMIN");
btnAdmin.setBounds(1245, 682, 95, 37);
Home.add(btnAdmin);
JLabel lblCurrentUser = new JLabel("Current User:");
lblCurrentUser.setForeground(new Color(255, 255, 255));
lblCurrentUser.setFont(new Font("Tahoma", Font.PLAIN, 14));
lblCurrentUser.setBounds(1081, 12, 83, 14);
Home.add(lblCurrentUser);
JLabel lblNewLabel_1 = new JLabel("Date & Time:");
lblNewLabel_1.setForeground(new Color(255, 255, 255));
lblNewLabel_1.setFont(new Font("Tahoma", Font.PLAIN, 14));
lblNewLabel_1.setBounds(10, 14, 80, 14);
Home.add(lblNewLabel_1);
JPanel Order = new JPanel();
Order.setBackground(new Color(128, 0, 0));
frmUniveposV.getContentPane().add(Order, "name_244796279334447");
Order.setLayout(null);
JLabel lblOrder = new JLabel("ORDER:");
lblOrder.setForeground(new Color(255, 255, 255));
lblOrder.setFont(new Font("Tahoma", Font.BOLD, 40));
lblOrder.setBounds(10, 11, 166, 43);
Order.add(lblOrder);
JLabel lblDateTime = new JLabel("DATE & TIME:");
lblDateTime.setForeground(new Color(255, 255, 255));
lblDateTime.setFont(new Font("Tahoma", Font.BOLD, 40));
lblDateTime.setBounds(771, 11, 282, 43);
Order.add(lblDateTime);
JLabel lblTable = new JLabel("TABLE:");
lblTable.setForeground(new Color(255, 255, 255));
lblTable.setFont(new Font("Tahoma", Font.BOLD, 40));
lblTable.setBounds(391, 11, 146, 43);
Order.add(lblTable);
Panel panel = new Panel();
panel.setBounds(10, 75, 650, 489);
Order.add(panel);
panel.setLayout(null);
JLabel lblNewLabel_2 = new JLabel("TOTAL:");
lblNewLabel_2.setForeground(new Color(255, 255, 255));
lblNewLabel_2.setFont(new Font("Tahoma", Font.BOLD, 40));
lblNewLabel_2.setBounds(10, 421, 157, 57);
panel.add(lblNewLabel_2);
JLabel lblCurrentOrder = new JLabel("CURRENT ORDER");
lblCurrentOrder.setForeground(new Color(255, 255, 255));
lblCurrentOrder.setBounds(251, 5, 198, 31);
lblCurrentOrder.setFont(new Font("Tahoma", Font.PLAIN, 25));
panel.add(lblCurrentOrder);
Panel panel_1 = new Panel();
panel_1.setBounds(690, 75, 650, 489);
Order.add(panel_1);
panel_1.setLayout(null);
JLabel lblCategories = new JLabel("CATEGORIES");
lblCategories.setForeground(new Color(255, 255, 255));
lblCategories.setFont(new Font("Tahoma", Font.PLAIN, 25));
lblCategories.setBounds(254, 11, 153, 31);
panel_1.add(lblCategories);
JButton btnPrevious = new JButton("PREVIOUS");
btnPrevious.setBounds(462, 455, 89, 23);
panel_1.add(btnPrevious);
JButton btnNext = new JButton("NEXT");
btnNext.setBounds(551, 455, 89, 23);
panel_1.add(btnNext);
JButton btnNewButton_7 = new JButton("SAVE");
btnNewButton_7.setFont(new Font("Tahoma", Font.BOLD, 30));
btnNewButton_7.setBounds(10, 582, 254, 137);
Order.add(btnNewButton_7);
JButton btnSavePay = new JButton("SAVE & PAY");
btnSavePay.setFont(new Font("Tahoma", Font.BOLD, 30));
btnSavePay.setBounds(274, 582, 274, 137);
Order.add(btnSavePay);
JButton btnFinish = new JButton("FINISH");
btnFinish.setFont(new Font("Tahoma", Font.BOLD, 30));
btnFinish.setBounds(558, 582, 253, 137);
Order.add(btnFinish);
JButton button = new JButton("ADMIN");
button.setFont(new Font("Tahoma", Font.BOLD, 11));
button.setBounds(1245, 682, 95, 37);
Order.add(button);
JButton btnExit = new JButton("EXIT");
btnExit.setFont(new Font("Tahoma", Font.BOLD, 11));
btnExit.setBounds(1114, 682, 95, 37);
Order.add(btnExit);
JPanel Reports = new JPanel();
Reports.setBackground(new Color(128, 0, 0));
frmUniveposV.getContentPane().add(Reports, "name_244798869260892");
Reports.setLayout(null);
Panel panel_2 = new Panel();
panel_2.setBounds(0, 180, 1350, 459);
Reports.add(panel_2);
panel_2.setLayout(null);
JLabel lblSales = new JLabel("SALES");
lblSales.setForeground(new Color(255, 255, 255));
lblSales.setFont(new Font("Tahoma", Font.PLAIN, 25));
lblSales.setBounds(600, 0, 78, 52);
panel_2.add(lblSales);
JLabel lblReports = new JLabel("REPORTS");
lblReports.setForeground(new Color(255, 255, 255));
lblReports.setFont(new Font("Tahoma", Font.BOLD, 35));
lblReports.setBounds(556, 0, 174, 52);
Reports.add(lblReports);
JButton btnNewButton_8 = new JButton("SALES");
btnNewButton_8.setFont(new Font("Tahoma", Font.PLAIN, 25));
btnNewButton_8.setBounds(10, 97, 174, 77);
Reports.add(btnNewButton_8);
JButton btnCancellations = new JButton("CANCELLATIONS");
btnCancellations.setFont(new Font("Tahoma", Font.PLAIN, 25));
btnCancellations.setBounds(194, 97, 221, 77);
Reports.add(btnCancellations);
JButton btnItemsSold = new JButton("ITEMS SOLD");
btnItemsSold.setFont(new Font("Tahoma", Font.PLAIN, 25));
btnItemsSold.setBounds(425, 97, 221, 77);
Reports.add(btnItemsSold);
JLabel lblNewLabel_3 = new JLabel("PAGE");
lblNewLabel_3.setForeground(new Color(255, 255, 255));
lblNewLabel_3.setFont(new Font("Tahoma", Font.PLAIN, 40));
lblNewLabel_3.setBounds(610, 645, 106, 74);
Reports.add(lblNewLabel_3);
JButton btnNewButton_9 = new JButton("PREVIOUS");
btnNewButton_9.setFont(new Font("Tahoma", Font.BOLD, 11));
btnNewButton_9.setBounds(860, 645, 163, 74);
Reports.add(btnNewButton_9);
JButton btnNext_1 = new JButton("NEXT");
btnNext_1.setFont(new Font("Tahoma", Font.BOLD, 11));
btnNext_1.setBounds(1025, 645, 164, 74);
Reports.add(btnNext_1);
JButton btnNewButton_10 = new JButton("EXIT");
btnNewButton_10.setFont(new Font("Tahoma", Font.BOLD, 11));
btnNewButton_10.setBounds(1199, 645, 141, 74);
Reports.add(btnNewButton_10);
JPanel Settings = new JPanel();
Settings.setBackground(new Color(128, 0, 0));
frmUniveposV.getContentPane().add(Settings, "name_244813941995636");
Settings.setLayout(null);
JLabel lblNewLabel_4 = new JLabel("SYSTEM SETTINGS");
lblNewLabel_4.setForeground(new Color(255, 255, 255));
lblNewLabel_4.setFont(new Font("Tahoma", Font.BOLD, 35));
lblNewLabel_4.setBounds(500, 0, 339, 54);
Settings.add(lblNewLabel_4);
JList list = new JList();
list.setForeground(new Color(255, 255, 255));
list.setBackground(new Color(128, 0, 0));
list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
list.setFont(new Font("Tahoma", Font.PLAIN, 40));
list.setModel(new AbstractListModel() {
String[] values = new String[] {"USER 1", "USER 2", "USER 3", "USER 4", "USER 5"};
public int getSize() {
return values.length;
}
public Object getElementAt(int index) {
return values[index];
}
});
list.setBounds(10, 82, 634, 481);
Settings.add(list);
JButton btnNewButton_11 = new JButton("ADD USER");
btnNewButton_11.setFont(new Font("Tahoma", Font.BOLD, 11));
btnNewButton_11.setBounds(10, 617, 196, 102);
Settings.add(btnNewButton_11);
JButton btnChangeSuperuserPassword = new JButton("CHANGE SUPERUSER PASSWORD");
btnChangeSuperuserPassword.setFont(new Font("Tahoma", Font.BOLD, 11));
btnChangeSuperuserPassword.setBounds(433, 617, 211, 102);
Settings.add(btnChangeSuperuserPassword);
JButton button_1 = new JButton("EXIT");
button_1.setFont(new Font("Tahoma", Font.BOLD, 11));
button_1.setBounds(1245, 682, 95, 37);
Settings.add(button_1);
Panel panel_3 = new Panel();
panel_3.setBounds(650, 84, 690, 479);
Settings.add(panel_3);
panel_3.setLayout(null);
JLabel lblNewLabel_5 = new JLabel("RECEIPT OF SALE");
lblNewLabel_5.setForeground(new Color(255, 255, 255));
lblNewLabel_5.setFont(new Font("Tahoma", Font.PLAIN, 20));
lblNewLabel_5.setBounds(260, 11, 178, 44);
panel_3.add(lblNewLabel_5);
JLabel lblNewLabel_6 = new JLabel("COMPANY");
lblNewLabel_6.setForeground(new Color(255, 255, 255));
lblNewLabel_6.setFont(new Font("Tahoma", Font.PLAIN, 22));
lblNewLabel_6.setBounds(24, 136, 125, 44);
panel_3.add(lblNewLabel_6);
JLabel lblSalesRepresentative = new JLabel("SALES REP");
lblSalesRepresentative.setForeground(new Color(255, 255, 255));
lblSalesRepresentative.setFont(new Font("Tahoma", Font.PLAIN, 22));
lblSalesRepresentative.setBounds(24, 213, 125, 44);
panel_3.add(lblSalesRepresentative);
JLabel lblAddress = new JLabel("ADDRESS");
lblAddress.setForeground(new Color(255, 255, 255));
lblAddress.setFont(new Font("Tahoma", Font.PLAIN, 22));
lblAddress.setBounds(24, 171, 125, 48);
panel_3.add(lblAddress);
JLabel lblMessage = new JLabel("MESSAGE");
lblMessage.setForeground(new Color(255, 255, 255));
lblMessage.setFont(new Font("Tahoma", Font.PLAIN, 22));
lblMessage.setBounds(24, 256, 125, 38);
panel_3.add(lblMessage);
textField_2 = new JTextField();
textField_2.setBounds(154, 151, 404, 26);
panel_3.add(textField_2);
textField_2.setColumns(10);
textField_3 = new JTextField();
textField_3.setColumns(10);
textField_3.setBounds(154, 188, 404, 26);
panel_3.add(textField_3);
textField_4 = new JTextField();
textField_4.setColumns(10);
textField_4.setBounds(154, 228, 404, 26);
panel_3.add(textField_4);
textField_5 = new JTextField();
textField_5.setColumns(10);
textField_5.setBounds(154, 268, 404, 26);
panel_3.add(textField_5);
JPanel Administration = new JPanel();
Administration.setBackground(new Color(128, 0, 0));
frmUniveposV.getContentPane().add(Administration, "name_244816080502214");
Administration.setLayout(null);
JLabel lblNewLabel_7 = new JLabel("ADMINISTRATION");
lblNewLabel_7.setForeground(new Color(255, 255, 255));
lblNewLabel_7.setFont(new Font("Tahoma", Font.BOLD, 35));
lblNewLabel_7.setBounds(506, 0, 335, 43);
Administration.add(lblNewLabel_7);
JLabel lblCategories_1 = new JLabel("CATEGORIES");
lblCategories_1.setForeground(new Color(255, 255, 255));
lblCategories_1.setFont(new Font("Tahoma", Font.PLAIN, 35));
lblCategories_1.setBounds(90, 88, 214, 43);
Administration.add(lblCategories_1);
JLabel lblSubcategories = new JLabel("SUB-CATEGORIES");
lblSubcategories.setForeground(new Color(255, 255, 255));
lblSubcategories.setFont(new Font("Tahoma", Font.PLAIN, 35));
lblSubcategories.setBounds(528, 88, 292, 43);
Administration.add(lblSubcategories);
JLabel label = new JLabel("SUB-CATEGORIES");
label.setForeground(new Color(255, 255, 255));
label.setFont(new Font("Tahoma", Font.PLAIN, 35));
label.setBounds(1008, 88, 292, 43);
Administration.add(label);
JList list_1 = new JList();
list_1.setBounds(55, 142, 292, 404);
Administration.add(list_1);
JList list_2 = new JList();
list_2.setBounds(528, 142, 292, 404);
Administration.add(list_2);
JList list_3 = new JList();
list_3.setBounds(1008, 142, 292, 404);
Administration.add(list_3);
JButton btnAdd = new JButton("ADD");
btnAdd.setBounds(55, 557, 89, 23);
Administration.add(btnAdd);
JButton button_2 = new JButton("ADD");
button_2.setBounds(528, 557, 89, 23);
Administration.add(button_2);
JButton button_3 = new JButton("ADD");
button_3.setBounds(1008, 557, 89, 23);
Administration.add(button_3);
JButton btnRemove = new JButton("REMOVE");
btnRemove.setBounds(258, 557, 89, 23);
Administration.add(btnRemove);
JButton button_4 = new JButton("REMOVE");
button_4.setBounds(731, 557, 89, 23);
Administration.add(button_4);
JButton button_5 = new JButton("REMOVE");
button_5.setBounds(1211, 557, 89, 23);
Administration.add(button_5);
JButton btnReports = new JButton("REPORTS");
btnReports.setFont(new Font("Tahoma", Font.BOLD, 30));
btnReports.setBounds(10, 638, 180, 81);
Administration.add(btnReports);
JButton btnSettings = new JButton("SETTINGS");
btnSettings.setFont(new Font("Tahoma", Font.BOLD, 30));
btnSettings.setBounds(200, 638, 185, 81);
Administration.add(btnSettings);
JButton button_6 = new JButton("EXIT");
button_6.setFont(new Font("Tahoma", Font.BOLD, 11));
button_6.setBounds(1245, 682, 95, 37);
Administration.add(button_6);
}
}
数据库类的源代码如下所示
import java.awt.event.*;
import java.sql.*;
public class database {
Connection con;
Statement st;
ResultSet rs;
public database()
{
connect();
frame();
}
public void connect()
{
try{
String driver = "sun.jdbc.odbc.JdbcOdbcDriver";
Class.forName(driver);
String db = "jdbc:odbc:db";
con = DriverManager.getConnection(db);
st = con.createStatement();
}
catch(Exception ex){
}
}
public void frame()
{
new UnivEPOS();
}
}