如何在CsvReader中使用getHeaders（）方法读取csv文件的标头值

Question

I have written code as below. But it is returning null

CsvReader headerNames = new CsvReader(filePath);
String[] names = headerNames.getHeaders();

Answer 1

String file = "fileName.csv";
CSVReader reader = new CSVReader(new FileReader(file ));
// if the first line is the header
String[] header = reader.readNext();

Answer 2

Please use this code inside try catch block or Throws IOException

CSVReader reader = new CSVReader(new FileReader("emps.csv"), ',');  
            // read line by line
            String[] record = null;

            while ((record = reader.readNext()) != null) {
                System.out.print(record[0]);
                System.out.print(record[1]);
            }
           reader.close();

Or You can Try This Way

public class OpenCSVReaderReadAllExample {

    public static void main(String[] args) throws IOException {
        CSVReader reader = new CSVReader(new FileReader("emps.csv"), ',');

        List<String[]> records = reader.readAll();

        Iterator<String[]> iterator = records.iterator();

        while (iterator.hasNext()) {
            String[] record = iterator.next();
            System.out.print(record[0]);
            System.out.print(record[0]);
        }
        reader.close();

    }

}

Answer 3

Please use this code , it will give you the header's Name.

`Reader reader = Files.newBufferedReader(Paths.get(filepath));`

CSVReader headerNames = new CSVReader(reader); String[] names = headerNames.readNext(); for (int i=0;i<names.length;i++) { System.out.println(names[i]); }