CopyManager是Amazon Redshift JDBC驱动程序中的一个类，它可以用于将数据从文件或流中复制到Amazon Redshift数据库中。其中一个方法是copyIn，它可以执行COPY命令并将数据复制到数据库中的表中。

下面是一个示例代码，它演示了如何使用CopyManager.copyIn方法将CSV文件中的数据复制到Redshift数据库表中：

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Properties;

import com.amazonaws.services.redshift.copymanager.CsvDataFormat;
import com.amazonaws.services.redshift.jdbc.Driver;
import com.amazonaws.services.redshift.jdbc.RedshiftConnection;
import com.amazonaws.services.redshift.jdbc.RedshiftCopyManager;
import com.amazonaws.services.redshift.jdbc.RedshiftPreparedStatement;

public class RedshiftCopyManagerExample {
    
    private static final String DB_PROPERTIES_FILE = "db.properties";
    private static final String COPY_QUERY = "COPY mytable FROM STDIN FORMAT CSV";
    private static final String FILE_PATH = "/path/to/my/csvfile.csv";
    
    public static void main(String[] args) throws FileNotFoundException, SQLException {
        
        Properties props = loadProperties();
        Connection conn = getRedshiftConnection(props);
        
        RedshiftCopyManager copyManager = new RedshiftCopyManager((RedshiftConnection) conn);
        
        FileInputStream fis = new FileInputStream(new File(FILE_PATH));
        RedshiftPreparedStatement pstmt = (RedshiftPreparedStatement) conn.prepareStatement(COPY_QUERY);
        
        CsvDataFormat csvDataFormat = new CsvDataFormat();
        csvDataFormat.setDelimiter(',');
        
        copyManager.copyIn(pstmt, null, fis, csvDataFormat);
        
        pstmt.close();
        fis.close();
        conn.close();
    }
    
    private static Connection getRedshiftConnection(Properties props) throws SQLException {
        String url = String.format("jdbc:redshift://%s:%d/%s", 
                props.getProperty("host"), 
                Integer.parseInt(props.getProperty("port")), 
                props.getProperty("database"));
        
        return DriverManager.getConnection(url, props);
    }
    
    private static Properties loadProperties() throws FileNotFoundException {
        FileInputStream fis = new FileInputStream(new File(DB_PROPERTIES_FILE));
        Properties props = new Properties();
        
        try {
            props.load(fis);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                fis.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        
        return props;
    }

}

在以上示例代码中，首先加载了一个包含数据库连接配置信息的属性文件，然后获取了一个Redshift连接