数据库连接类Java代码
时间: 2024-03-25 07:36:53 浏览: 20
好的,下面是一个简单的数据库连接类的Java代码示例:
```java
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class DatabaseConnection {
private static final String URL = "jdbc:mysql://localhost:3306/mydatabase";
private static final String USERNAME = "username";
private static final String PASSWORD = "password";
public static Connection getConnection() {
Connection connection = null;
try {
Class.forName("com.mysql.jdbc.Driver");
connection = DriverManager.getConnection(URL, USERNAME, PASSWORD);
System.out.println("Database connected successfully!");
} catch (ClassNotFoundException e) {
System.out.println("JDBC driver not found!");
} catch (SQLException e) {
System.out.println("Database connection failed!");
}
return connection;
}
}
```
这个类使用了MySQL数据库,需要在运行前先下载并导入相应的JDBC驱动。在使用时,只需要调用`getConnection()`方法即可获得一个数据库连接对象。