(Java) CSV Column Names

Demonstrates how to access CSV column names.

The Chilkat CSV library/component/class is freeware. The downloads for .NET, C++, Perl, Java, Ruby, and Python contain all of the Chilkat classes, some of which are freeware and some of which require licensing.

Chilkat Java Downloads Java Libs for Windows, MacOS, Linux, Alpine Linux, Solaris Java Libs for Android

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    // This example program loads a file (sample.csv)
    // that contains this content:
    // 
    // year,color,country,food
    // 2001,red,France,cheese
    // 2005,blue,"United States",hamburger
    // 2008,green,Italy,pasta
    // 1998,orange,Japan,sushi
    // 
    // The first row contains the column names.
    // This file is available at:
    // http://www.chilkatsoft.com/testData/sample.csv

    CkCsv csv = new CkCsv();

    // Prior to loading the CSV file, indicate that the 1st row
    // should be treated as column names:
    csv.put_HasColumnNames(true);

    // Load the CSV records from the file:
    boolean success;
    success = csv.LoadFile("sample.csv");
    if (success != true) {
        System.out.println(csv.lastErrorText());
        return;
        }

    // Display the column names:
    int i;
    String colName;
    int idx;
    for (i = 0; i <= csv.get_NumColumns() - 1; i++) {
        colName = csv.getColumnName(i);
        System.out.println(i + ": " + colName);

        // The following line demonstrates to to get the column
        // index given a column name:
        idx = csv.GetIndex(colName);
        System.out.println(colName + " is at column index " + idx);
        }
  }
}