如何检查C3P0的连接池在我的项目中是否有效？

import com.mchange.v2.c3p0.ComboPooledDataSource;
import java.sql.Connection;
import java.sql.SQLException;

public class C3P0ConnectionTest {
    public static void main(String[] args) {
        ComboPooledDataSource dataSource = new ComboPooledDataSource();
        Connection connection = null;

        try {
            connection = dataSource.getConnection();
            boolean isValid = connection.isValid(3); // 设置超时时间为3秒

            if (isValid) {
                System.out.println("C3P0连接池有效");
                // 继续使用连接进行数据库操作
            } else {
                System.out.println("C3P0连接池无效");
                // 进行相应的处理
            }
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            if (connection != null) {
                try {
                    connection.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}