JavaCSVTest.java


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import au.com.bytecode.opencsv.CSVReader;
import au.com.bytecode.opencsv.CSVWriter;
import java.io.FileReader;
import java.io.FileWriter;

public class JavaCSVTest {
  private static String[] concat(final String a[], final String b[]) {
    final String r[] = new String[a.length + b.length];

    System.arraycopy(a, 0, r, 0, a.length);
    System.arraycopy(b, 0, r, a.length, b.length);

    return r;
  }

  private static final String FOO[] = { "foo", "foo" };

  public static void main(String args[]) throws Exception {
    final String src_path = args[0], dst_path = args[1];
    final CSVReader src = new CSVReader(new FileReader(src_path));
    final CSVWriter dst = new CSVWriter(new FileWriter(dst_path));

    String row[];
    while ((row = src.readNext()) != null)
      dst.writeNext(concat(row, FOO));

    dst.close();
  }
}