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Java Swing（GUI窗口）+mysql实现的汽车租赁系统二（登录、车辆管理、租车管理、修车管理、还车管理、利润分析）

程序员文章站 2022-04-15 18:57:52
博客目录JavaSwing汽车租赁系统二实现功能截图系统功能使用技术代码写在最后JavaSwing汽车租赁系统二本系统是将面向对象基础和高级开发融合起来，同时将GUI、数据库融入到面向对象软件设计和开发中，运用所学知识解决复杂工程问题。实现功能截图登录页面主菜单页面：车辆信息管理页面：租车信息管理页面：还车信息管理页面：修车管理页面：利润分析页面：系统功能本汽车租赁系统实现了以下功能：1、提供图形界面输入用户名和密码登录，然后进入主界面，进行汽车租赁业务操作。2、进...

博客目录

JavaSwing汽车租赁系统二

本系统是将面向对象基础和高级开发融合起来，同时将GUI、数据库融入到面向对象软件设计和开发中，运用所学知识解决复杂工程问题。

实现功能截图

登录页面
Java Swing（GUI窗口）+mysql实现的汽车租赁系统二（登录、车辆管理、租车管理、修车管理、还车管理、利润分析）
主菜单页面：
Java Swing（GUI窗口）+mysql实现的汽车租赁系统二（登录、车辆管理、租车管理、修车管理、还车管理、利润分析）
车辆信息管理页面：
Java Swing（GUI窗口）+mysql实现的汽车租赁系统二（登录、车辆管理、租车管理、修车管理、还车管理、利润分析）
租车信息管理页面：
Java Swing（GUI窗口）+mysql实现的汽车租赁系统二（登录、车辆管理、租车管理、修车管理、还车管理、利润分析）
还车信息管理页面：
Java Swing（GUI窗口）+mysql实现的汽车租赁系统二（登录、车辆管理、租车管理、修车管理、还车管理、利润分析）
修车管理页面：
Java Swing（GUI窗口）+mysql实现的汽车租赁系统二（登录、车辆管理、租车管理、修车管理、还车管理、利润分析）
利润分析页面：
Java Swing（GUI窗口）+mysql实现的汽车租赁系统二（登录、车辆管理、租车管理、修车管理、还车管理、利润分析）

系统功能

本汽车租赁系统实现了以下功能：
1、提供图形界面输入用户名和密码登录，然后进入主界面，进行汽车租赁业务操作。
2、进入系统后，用户可以查看所有车辆、租车、归还、保修等操作。

使用技术

数据库：mysql
开发工具：Eclipse（Myeclispe、Idea也可以）
知识点：JavaSwing

本系统采用将数据与视图分离的思想：将项目包分为model、util和view，代码结构清晰
Java Swing（GUI窗口）+mysql实现的汽车租赁系统二（登录、车辆管理、租车管理、修车管理、还车管理、利润分析）

代码

登录：

package view;

import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.SwingConstants;
import util.Database;

import javax.swing.JPanel;
import java.awt.Font;
import javax.swing.JTextField;
import javax.swing.JPasswordField;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

/**
 * 登录窗口
 * @author wen
 *
 */
public class LoginView extends JFrame{

	//private JFrame frame;
	/**
	 * 用户名
	 */
	private JTextField textField;
	/**
	 * 密码
	 */
	private JPasswordField passwordField;

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

	/**
	 * Create the application.
	 */
	public LoginView() {
		initialize();
	}

	/**
	 * Initialize the contents of the frame.
	 */
	private void initialize() {
		//this = new JFrame();
		this.setTitle("车辆管理系统 - 管理员登录");
		this.setBounds(100, 100, 450, 300);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		this.getContentPane().setLayout(null);
		
		JPanel panel = new JPanel();
		panel.setBounds(0, 0, 434, 261);
		this.getContentPane().add(panel);
		panel.setLayout(null);
		
		JLabel lblNewLabel = new JLabel("登录名：");
		lblNewLabel.setBounds(87, 73, 56, 16);
		lblNewLabel.setFont(new Font("宋体", Font.PLAIN, 14));
		panel.add(lblNewLabel);
		lblNewLabel.setHorizontalAlignment(SwingConstants.CENTER);
		
		JLabel lblNewLabel_1 = new JLabel("密码：");
		lblNewLabel_1.setBounds(99, 122, 44, 30);
		lblNewLabel_1.setHorizontalAlignment(SwingConstants.CENTER);
		lblNewLabel_1.setFont(new Font("宋体", Font.PLAIN, 14));
		panel.add(lblNewLabel_1);
		
		textField = new JTextField();
		textField.setBounds(147, 67, 194, 30);
		panel.add(textField);
		textField.setColumns(10);
		
		passwordField = new JPasswordField();
		passwordField.setBounds(147, 123, 194, 30);
		panel.add(passwordField);
		
		JButton btnNewButton = new JButton("登录");
		btnNewButton.setBounds(180, 186, 93, 30);
		
		btnNewButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				String userName = textField.getText().trim();
	            String password = new String(passwordField.getPassword()).trim();
	            if (userName == null || "".equals(userName)) {
                    JOptionPane.showMessageDialog(null, "登录名不能为空");
                    return;
                }
                if (password == null || "".equals(password)) {
                    JOptionPane.showMessageDialog(null, "密码不能为空");
                    return;
                }
                try {
                	  if (Database.userLogin(userName, password)) {
                		  dispose();
                          MainView mv = new MainView();
                          //mv.setVisible(true);
                      } else {
                      	  JOptionPane.showMessageDialog(null, "登录失败，请核对登录信息");
                            return;
                      }
                } catch(Exception ex) {
                	ex.printStackTrace();
                	JOptionPane.showMessageDialog(null, "登录失败");
                    return;
                }
			}
		});
		panel.add(btnNewButton);
	}
}

主页面：

package view;

import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.Font;
import javax.swing.JLabel;
import javax.swing.SwingConstants;
import java.awt.SystemColor;
import javax.swing.JPanel;

public class MainView{

	private JFrame frame;
	private JButton btnNewButton;
	private JButton button;
	private JButton button_1;
	private JButton button_2;
	private JButton button_3;
	
	private final JPanel panel = new JPanel();
	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					MainView window = new MainView();
					window.frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the application.
	 */
	public MainView() {
		super();
		initialize();
	}
	
	public MainView(boolean reload) {
		initialize();
	}
	/**
	 * Initialize the contents of the frame.
	 */
	private void initialize() {
		frame = new JFrame();
		frame.setTitle("车辆管理系统");
		frame.setBounds(100, 100, 729, 517);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.getContentPane().setLayout(null);
		
		frame.setVisible(true);
		panel.setBounds(10, 0, 691, 468);
		
		frame.getContentPane().add(panel);
		
		btnNewButton = new JButton("车辆信息管理");
		button = new JButton("租车信息管理");
		button_1 = new JButton("还车信息管理");
		button_2 = new JButton("修车信息管理");
		button_3 = new JButton("利润分析");
		
		panel.setLayout(null);
		btnNewButton.setBounds(63, 97, 272, 58);
		panel.add(btnNewButton);
	
	
		
		btnNewButton.setFont(new Font("宋体", Font.PLAIN, 24));
		button.setBounds(387, 97, 272, 58);
		panel.add(button);
		
		
		button.setFont(new Font("宋体", Font.PLAIN, 24));
		button_1.setBounds(63, 191, 272, 58);
		panel.add(button_1);
		
		button_1.setFont(new Font("宋体", Font.PLAIN, 24));
		button_2.setBounds(387, 191, 272, 58);
		panel.add(button_2);
		
		button_2.setFont(new Font("宋体", Font.PLAIN, 24));
		button_3.setBounds(63, 296, 596, 58);
		panel.add(button_3);
	
		button_3.setFont(new Font("宋体", Font.PLAIN, 24));
		
		JLabel lblNewLabel = new JLabel("车    辆    管    理    系    统");
		lblNewLabel.setBounds(63, 20, 596, 40);
		panel.add(lblNewLabel);
		lblNewLabel.setForeground(SystemColor.text);
		lblNewLabel.setHorizontalAlignment(SwingConstants.CENTER);
		lblNewLabel.setFont(new Font("宋体", Font.BOLD, 34));
		
		BtnListener btn = new BtnListener();
		button_3.addActionListener(btn);
		button_2.addActionListener(btn);
		button_1.addActionListener(btn);
		button.addActionListener(btn);
		btnNewButton.addActionListener(btn);
		

	}
	
	public class BtnListener implements ActionListener {
        public void actionPerformed(ActionEvent e) {
            if (e.getSource() == btnNewButton) {
            	 // frame.dispose();
            	  CarInfoView carInfoView = new CarInfoView();
            } else if (e.getSource() == button) {
            	RentCarInfoView carInfoView = new RentCarInfoView();
//                System.exit(0);
            } else if (e.getSource() == button_1) {
            	RepayCarInfoView carInfoView = new RepayCarInfoView();
//                System.exit(0);
            } else if (e.getSource() == button_2) {
            	FixCarInfoView carInfoView = new FixCarInfoView();
//                System.exit(0);
            } else if (e.getSource() == button_3) {
            	 // frame.dispose();
            	  ProfitAnalysisView p = new ProfitAnalysisView();
            }
        }
    }
}

车辆管理页面：

package view;

import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.List;
import java.util.Vector;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ScrollPaneConstants;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableModel;

import model.TCar;
import util.Database;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JTextField;
import javax.swing.ListSelectionModel;
import javax.swing.JButton;

public class CarInfoView {

	private JFrame frame;
	private JTable table;
	private JTextField textField;
	private JTextField textField_1;
	private JTextField textField_2;
	private JTextField textField_3;
	private JTextField textField_4;
	JScrollPane scrollPane;
	private JButton button_1;
	private JButton button_2;
	private JButton button_3;
	private JButton button_4;
	private TableModel model;
	
	/**
	 * Launch the application.
	 */
	private Vector<String> columnName = new Vector();

	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					CarInfoView window = new CarInfoView();
					window.frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the application.
	 */
	public CarInfoView() {
		initialize();
	}

	/**
	 * Initialize the contents of the frame.
	 */
	private void initialize() {
		frame = new JFrame();
		frame.setTitle("车辆管理系统");
		frame.setBounds(100, 100, 567, 504);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		frame.setVisible(true);
		
		JPanel panel_1 = new JPanel();
		panel_1.setBounds(422, 10, 129, 455);
		frame.getContentPane().setLayout(null);
		frame.getContentPane().add(panel_1);
		panel_1.setLayout(null);
		
		JLabel label = new JLabel("车辆编号");
		label.setBounds(38, 10, 54, 15);
		panel_1.add(label);
		
		textField = new JTextField();
		textField.setBounds(27, 35, 77, 21);
		panel_1.add(textField);
		textField.setColumns(10);
		
		JLabel lblNewLabel = new JLabel("车辆名称");
		lblNewLabel.setBounds(38, 66, 54, 15);
		panel_1.add(lblNewLabel);
		
		textField_1 = new JTextField();
		textField_1.setBounds(27, 91, 77, 21);
		panel_1.add(textField_1);
		textField_1.setColumns(10);
		
		JLabel lblNewLabel_1 = new JLabel("车辆颜色");
		lblNewLabel_1.setBounds(38, 122, 54, 15);
		panel_1.add(lblNewLabel_1);
		
		textField_2 = new JTextField();
		textField_2.setBounds(27, 147, 77, 21);
		panel_1.add(textField_2);
		textField_2.setColumns(10);
		
		JLabel lblNewLabel_2 = new JLabel("车辆类型");
		lblNewLabel_2.setBounds(38, 178, 54, 15);
		panel_1.add(lblNewLabel_2);
		
		textField_3 = new JTextField();
		textField_3.setBounds(27, 203, 77, 21);
		panel_1.add(textField_3);
		textField_3.setColumns(10);
		
		JLabel lblNewLabel_3 = new JLabel("车辆计价");
		lblNewLabel_3.setBounds(38, 234, 54, 15);
		panel_1.add(lblNewLabel_3);
		
		textField_4 = new JTextField();
		textField_4.setBounds(27, 259, 77, 21);
		panel_1.add(textField_4);
		textField_4.setColumns(10);
		
		// 操作按钮
		button_1 = new JButton("添加");
		button_1.setBounds(27, 307, 77, 23);
		panel_1.add(button_1);
		
		button_2 = new JButton("修改");
		button_2.setBounds(27, 340, 77, 23);
		panel_1.add(button_2);
		
		button_3 = new JButton("删除");
		button_3.setBounds(27, 373, 77, 23);
		panel_1.add(button_3);
		
		button_4 = new JButton("刷新");
		button_4.setBounds(27, 406, 77, 23);
		panel_1.add(button_4);
		
		scrollPane = new JScrollPane();
		scrollPane.setBounds(0, 0, 393, 455);
		frame.getContentPane().add(scrollPane);
		scrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
		scrollPane.setToolTipText("车辆信息");
		
		// 初始化表格数据
		columnName.add("车辆编号");
		columnName.add("车辆名称");
		columnName.add("车辆颜色");
		columnName.add("车辆类型");
		columnName.add("车辆计价");
		Vector rowData = new Vector();
		List<TCar> list = Database.queryAllCarInfo();
		if (list != null && list.size() > 0) {
			for (int i=0;i<list.size();i++) {
				TCar car = list.get(i);
				Vector vector = new Vector();
				vector.add(car.getId());
				vector.add(car.getName());
				vector.add(car.getColor());
				vector.add(car.getType());
				vector.add(car.getPrice());

				rowData.add(vector);
			}
		}
		
		model = new DefaultTableModel(rowData, columnName) {
			// 设置表格中的数据不可以编辑
			public boolean isCellEditable(int r,int c) {
				return false;
			}
		};
		table = new JTable(model);
		scrollPane.setViewportView(table);
		// 只可单选
		table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
		table.getTableHeader().setReorderingAllowed(false);
		// 表格监听事件
		table.getSelectionModel().addListSelectionListener(new ListSelectionListener() {

			@Override
			public void valueChanged(ListSelectionEvent e) {
				// TODO Auto-generated method stub
				if (!e.getValueIsAdjusting()) {
					//支持拖动多选
					// int[]rows = table.getSelectedRows();
					// int[]cols = table.getSelectedColumns();//选中的列
					//for (int i : rows) {
						//System.out.println("#方法一:\t" + table.getValueAt(i, 0) + "\t" + table.getValueAt(i, 1));
					//}
					//支持单选
					int row=table.getSelectedRow();//选中行
					int col=table.getSelectedColumn();//选中列
					System.out.println("方法一:"+table.getValueAt(row, 0)+"\t"+table.getValueAt(row,4));
					// 綁定值
					textField.setText(String.valueOf(table.getValueAt(row, 0)));
					textField_1.setText(String.valueOf(table.getValueAt(row, 1)));
					textField_2.setText(String.valueOf(table.getValueAt(row, 2)));
					textField_3.setText(String.valueOf(table.getValueAt(row, 3)));
					textField_4.setText(String.valueOf(table.getValueAt(row, 4)));

				}
			}
		});
		
		BtnListener btn = new BtnListener();
		button_3.addActionListener(btn);
		button_2.addActionListener(btn);
		button_1.addActionListener(btn);
		button_4.addActionListener(btn);
	}

	public class BtnListener implements ActionListener {
		public void actionPerformed(ActionEvent e) {
			if (e.getSource() == button_1) {
				// 添加事件
				String name = textField_1.getText();
				String color = textField_2.getText().trim();
				String type = textField_3.getText().trim();
				String price = textField_4.getText().trim();
				if (name == null || "".equals(name)) {
					JOptionPane.showMessageDialog(null, "车辆名称不能为空");
                    return;
				}
				if (color == null || "".equals(color)) {
					JOptionPane.showMessageDialog(null, "车辆颜色不能为空");
                    return;
				}
				if (type == null || "".equals(type)) {
					JOptionPane.showMessageDialog(null, "车辆类型不能为空");
                    return;
				}
				if (price == null || "".equals(price)) {
					JOptionPane.showMessageDialog(null, "车辆计价不能为空");
                    return;
				}
				float fPrice = Float.valueOf(price);
		        String sql = "insert into t_car(name,color,type,price) values('" + name + "','" + color + "','" + type + "'," + fPrice + " )";
		        Database.update(sql);
		        JOptionPane.showMessageDialog(null, "添加成功");

			} else if (e.getSource() == button_2) {
				// 修改事件
				int row = table.getSelectedRow();
				if (row <= 0) {
                    JOptionPane.showMessageDialog(null, "请选择一条记录再执行修改操作");
                    return;
				}
				int id = (int) table.getValueAt(row, 0);
				String name = textField_1.getText().trim();
				if (name == null || "".equals(name)) {
					JOptionPane.showMessageDialog(null, "车辆名称不能为空");
                    return;
				}
				String color = textField_2.getText().trim();
				String type = textField_3.getText().trim();
				String price = textField_4.getText().trim();
				float fPrice = 0;
				if (price != null || price != "") {
					fPrice = Float.valueOf(price);
				}
		        String sql = "update t_car set name = '" + name + "',color = '" + color + "',type = '" + type + "',price = " + fPrice + " where id = " + id;
		        Database.update(sql);
		        JOptionPane.showMessageDialog(null, "修改成功");
			} else if (e.getSource() == button_3) {
				// 删除事件
				int row = table.getSelectedRow();
				if (row <= 0) {
                    JOptionPane.showMessageDialog(null, "请选择一条记录再执行删除操作");
                    return;
				}
				int id = (int) table.getValueAt(row, 0);
		        String sql = "delete from t_car where id = " + id;
		        Database.update(sql);
		        JOptionPane.showMessageDialog(null, "删除成功");
			} else if (e.getSource() == button_4) {
				// 刷新表格数据事件
				Object carInfos[][] = {};
				Vector rowData = new Vector();
				List<TCar> list = Database.queryAllCarInfo();
				if (list != null && list.size() > 0) {
					for (int i = 0; i < list.size(); i++) {
						TCar car = list.get(i);
						Vector vector = new Vector();
						vector.add(car.getId());
						vector.add(car.getName());
						vector.add(car.getColor());
						vector.add(car.getType());
						vector.add(car.getPrice());

						rowData.add(vector);
					}
				}
				model = new DefaultTableModel(rowData, columnName) {
					// 设置表格中的数据不可以编辑
					public boolean isCellEditable(int r,int c) {
						return false;
					}
				};
				table = new JTable(model);
				scrollPane.setViewportView(table);
				// 表格监听事件
				table.getSelectionModel().addListSelectionListener(new ListSelectionListener() {

					@Override
					public void valueChanged(ListSelectionEvent e) {
						// TODO Auto-generated method stub
						if (!e.getValueIsAdjusting()) {
							//支持拖动多选
							// int[]rows = table.getSelectedRows();
							// int[]cols = table.getSelectedColumns();//选中的列
							//for (int i : rows) {
								//System.out.println("#方法一:\t" + table.getValueAt(i, 0) + "\t" + table.getValueAt(i, 1));
							//}
							//支持单选
							int row=table.getSelectedRow();//选中行
							int col=table.getSelectedColumn();//选中列
							System.out.println("方法一:"+table.getValueAt(row, 0)+"\t"+table.getValueAt(row,4));
							// 綁定值
							textField.setText(String.valueOf(table.getValueAt(row, 0)));
							textField_1.setText(String.valueOf(table.getValueAt(row, 1)));
							textField_2.setText(String.valueOf(table.getValueAt(row, 2)));
							textField_3.setText(String.valueOf(table.getValueAt(row, 3)));
							textField_4.setText(String.valueOf(table.getValueAt(row, 4)));

						}
					}
				});
				
			}
		}
	}
}

利润分析页面：

package view;

import java.awt.EventQueue;
import java.util.Vector;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JPanel;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableModel;
import util.Database;
import javax.swing.JLabel;
import java.awt.Font;
import javax.swing.SwingConstants;
import java.awt.Color;

/**
 * 利润分析窗口
 * @author wen
 *
 */
public class ProfitAnalysisView {

	private JFrame frame;
	private JTable table;
	private JLabel label_1;
	private JLabel label_2;
	private JLabel label_3;

	private Vector<String> columnName = new Vector();

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

	/**
	 * Create the application.
	 */
	public ProfitAnalysisView() {
		initialize();
	}

	/**
	 * Initialize the contents of the frame.
	 */
	private void initialize() {
		frame = new JFrame();
		frame.setTitle("利润分析");
		frame.setBounds(100, 100, 567, 504);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.getContentPane().setLayout(null);
		frame.setVisible(true);
		
		JScrollPane scrollPane = new JScrollPane();
		scrollPane.setBorder(UIManager.getBorder("ComboBox.border"));
		scrollPane.setBounds(0, 0, 551, 304);
		frame.getContentPane().add(scrollPane);
		
		columnName.add("编号");
		columnName.add("时间");
		columnName.add("类型");
		columnName.add("车辆ID");
		columnName.add("费用");
		
		JPanel panel = new JPanel();
		panel.setBounds(0, 338, 551, 117);
		frame.getContentPane().add(panel);
		panel.setLayout(null);
		
		JLabel lblNewLabel = new JLabel("收入");
		lblNewLabel.setHorizontalTextPosition(SwingConstants.CENTER);
		lblNewLabel.setHorizontalAlignment(SwingConstants.CENTER);
		lblNewLabel.setFont(new Font("宋体", Font.PLAIN, 20));
		lblNewLabel.setBounds(89, 24, 54, 31);
		panel.add(lblNewLabel);
		
		JLabel lblNewLabe2 = new JLabel("支出");
		lblNewLabe2.setHorizontalTextPosition(SwingConstants.CENTER);
		lblNewLabe2.setHorizontalAlignment(SwingConstants.CENTER);
		lblNewLabe2.setFont(new Font("宋体", Font.PLAIN, 20));
		lblNewLabe2.setBounds(253, 24, 54, 31);
		panel.add(lblNewLabe2);
		
		JLabel lblNewLabe3 = new JLabel("利润");
		lblNewLabe3.setHorizontalTextPosition(SwingConstants.CENTER);
		lblNewLabe3.setHorizontalAlignment(SwingConstants.CENTER);
		lblNewLabe3.setFont(new Font("宋体", Font.PLAIN, 20));
		lblNewLabe3.setBounds(412, 24, 54, 31);
		panel.add(lblNewLabe3);
		
		label_1 = new JLabel("0.0");
		label_1.setForeground(new Color(0, 255, 255));
		label_1.setFont(new Font("宋体", Font.PLAIN, 16));
		label_1.setHorizontalAlignment(SwingConstants.CENTER);
		label_1.setHorizontalTextPosition(SwingConstants.CENTER);
		label_1.setBounds(83, 65, 70, 31);
		panel.add(label_1);
		
		label_2 = new JLabel("0.0");
		label_2.setForeground(Color.RED);
		label_2.setHorizontalTextPosition(SwingConstants.CENTER);
		label_2.setHorizontalAlignment(SwingConstants.CENTER);
		label_2.setFont(new Font("宋体", Font.PLAIN, 16));
		label_2.setBounds(247, 65, 70, 31);
		panel.add(label_2);
		
		label_3 = new JLabel("0.0");
		label_3.setForeground(Color.GREEN);
		label_3.setHorizontalTextPosition(SwingConstants.CENTER);
		label_3.setHorizontalAlignment(SwingConstants.CENTER);
		label_3.setFont(new Font("宋体", Font.PLAIN, 16));
		label_3.setBounds(407, 65, 70, 31);
		panel.add(label_3);
		
		// 车辆使用信息汇总
		Vector usage = new Vector();
		usage = Database.queryAllCarUsage();
		TableModel model = new DefaultTableModel(usage, columnName) {
			// 设置表格中的数据不可以编辑
			public boolean isCellEditable(int r,int c) {
				return false;
			}
		};
		table = new JTable(model);
		DefaultTableCellRenderer d = new DefaultTableCellRenderer();  
		// 设置表格列名对齐方式为居左对齐
		//table.getTableHeader().setDefaultRenderer(d);
		scrollPane.setViewportView(table);
		// 数据分析
		float inCome = Database.queryIncome();
		label_1.setText(String.valueOf(inCome));
		float cost = Database.queryCost();
		label_2.setText(String.valueOf(cost));
		float profits = inCome - cost;
		label_3.setText(String.valueOf(profits));
	}

}

写在最后

如果运行代码中遇到问题，或者需要完整源码和报告，可以加博主V交流：Code2Life2

本文地址：https://blog.csdn.net/anmu4200/article/details/110240807

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