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I have been looking for the past 2 hours for a solution to my problem in vain. I'am trying to read a CSV File using Apache commons ,I am able to read the whole file but my problem is how to extract only the header of the CSV in an array?
601
csv . It's very easy to read such CSV files with Apache Commons CSV. You just need to add a single setting called withFirstRecordAsHeader() . Apache Commons CSV uses the first record as the header record and allows you to retrieve the values using the header names.
Using Apache Commons CSV Commons CSV reads and writes files in variations of the Comma Separated Value (CSV) format. The most common CSV formats are predefined in the CSVFormat class: Microsoft Excel.
Apache POI was never designed to call on CSV files. While a CSV File may be opened in Excel, Excel has its own reader that does an auto import. This is assuming that your CSV has the . csv instead of the .
CSV is a simple format for representing a rectangular array (matrix) of numeric and textual values. It an example of a "flat file" format. It is a delimited data format that has fields/columns separated by the comma character %x2C (Hex 2C) and records/rows/lines separated by characters indicating a line break.
In Kotlin:
val reader = File(path).bufferedReader()
val records = CSVFormat.DEFAULT.withFirstRecordAsHeader()
.withIgnoreHeaderCase()
.withTrim()
.parse(reader)
println(records.headerNames)
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