Java GUI和mysql小系統是一種常用的數據庫管理工具，此系統在Java語言基礎上運用了GUI編程技術，將操作數據庫的過程圖形化以便操作。

Java GUI和mysql小系統主要實現功能包括：數據庫表的增、刪、改、查、增量備份等。其操作界面簡潔明了，便于用戶進行操作，同時還支持數據導入、導出等高級操作。

下面是此系統的源代碼實例：

//導入java相關包
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.table.DefaultTableModel;
public class JavaGuiAndMysqlSmallSystem {
private JFrame frame;
	private JTextField textField;
	private JTable table;
	private DefaultTableModel model;
private Connection conn;
	private Statement stmt;
	private ResultSet rs;
private String url = "jdbc:mysql://localhost:3306/student";
	private String username = "root";
	private String password = "root";
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
JavaGuiAndMysqlSmallSystem window = new JavaGuiAndMysqlSmallSystem();
window.frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
	}
public JavaGuiAndMysqlSmallSystem() {
initialize();
	}
private void initialize() {
frame = new JFrame();
frame.setBounds(100, 100, 680, 420);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setLayout(null);
textField = new JTextField();
textField.setBounds(20, 20, 250, 30);
frame.getContentPane().add(textField);
textField.setColumns(10);
JButton button = new JButton("查詢");
button.setBounds(300, 20, 100, 30);
frame.getContentPane().add(button);
JScrollPane scrollPane = new JScrollPane();
scrollPane.setBounds(20, 70, 630, 280);
frame.getContentPane().add(scrollPane);
table = new JTable();
model = new DefaultTableModel(
new Object[][] {},
new String[] { "學號", "姓名", "性別", "年齡" }
);
table.setModel(model);
scrollPane.setViewportView(table);
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
try {
if (conn == null) {
conn = DriverManager.getConnection(url, username, password);
}
stmt = conn.createStatement();
rs = stmt.executeQuery("SELECT * FROM stu WHERE name like '%" + textField.getText() + "%'");
while (model.getRowCount() >0) {
model.removeRow(0);
}
while (rs.next()) {
Object[] rowData = {
rs.getString("id"),
rs.getString("name"),
rs.getString("gender"),
rs.getString("age")
};
model.addRow(rowData);
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
try {
if (rs != null) {
rs.close();
}
if (stmt != null) {
stmt.close();
}
if (conn != null) {
conn.close();
}
} catch (SQLException e) {
e.printStackTrace();
}
}
}
});
	}
}

以上是Java GUI和mysql小系統的一個簡單實例源代碼，開發人員可以根據實際需求進行開發和改進，以滿足不同的數據庫管理需求。