如果您只想使用core java，可以尝试以下操作：

public class Main {
    public static void main(String[] args) {
        StringReader reader = new StringReader(
                """
                        Col1,Col2
                        aa,bb
                        cc,dd
                        """);

        Scanner scanner = new Scanner(reader);

        String[] header = scanner.nextLine().split(",");
        Map<String, Integer> mapping = new HashMap<>();
        for (int i = 0; i < header.length; i++) {
            mapping.put(header[i].trim(), i);
        }

        List<MyBean> list = new ArrayList<>();
        while (scanner.hasNext()) {
            String[] data = scanner.nextLine().split(",");
            MyBean value = new MyBean();
            value.setColum1(data[mapping.get("Col1")]);
            value.setColum2(data[mapping.get("Col2")]);
            list.add(value);
        }

        System.out.println(list);
    }

    @Data
    public static class MyBean {
        private String colum1;
        private String colum2;
    }
}

下面是一个小例子：

public class Main {
    public static void main(String[] args) {
        CSVReader csvReader = new CSVReader(new StringReader(
                """
                        Col1, Col2
                        aa, bb
                        cc, dd
                        """));
        CsvToBean<MyBean> parser = new CsvToBeanBuilder<MyBean>(csvReader)
                .withType(MyBean.class).build();
        List<MyBean> beans = parser.parse();

        System.out.println(beans);
    }
    
    @Data
    public static class MyBean {
        @CsvBindByName(column = "Col1")
        private String colum1;
        @CsvBindByName(column = "Col2")
        private String colum2;
    }
}

以下是必需的依赖关系：

<dependency>
            <groupId>com.opencsv</groupId>
            <artifactId>opencsv</artifactId>
            <version>5.5</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.24</version>
            <scope>provided</scope>
        </dependency>

Lombock是可选的。您可以按照自己的方式创建Bean。