java连接mysql数据库代码

以下是Java连接MySQL数据库的示例代码：

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class MySQLConnection {
    public static void main(String[] args) {
        Connection conn = null;
        String url = "jdbc:mysql://localhost:3306/your_database_name";
        String user = "your_username";
        String password = "your_password";

        try {
            conn = DriverManager.getConnection(url, user, password);
            System.out.println("Connection to MySQL database has been established!");
        } catch (SQLException e) {
            System.out.println(e.getMessage());
        } finally {
            try {
                if (conn != null) {
                    conn.close();
                    System.out.println("Connection to MySQL database has been closed!");
                }
            } catch (SQLException ex) {
                System.out.println(ex.getMessage());
            }
        }
    }
}

请将 `your_database_name`、`your_username`、`your_password` 分别替换为实际的数据库名、用户名和密码。