CSV File writing

class Tokenizer

import java.io.BufferedWriter; import java.io.FileWriter; import java.io.IOException;

public class CSVWriter {

static String[][] str = { { "x0", "y0", "z0" }, { "x1", "y1", "z1" },
       { "x2", "y2", "z2" } };
static String[] header = { "a", "b", "c" };

public static void main(String[] args) {
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < str.length; i++) {
       String[] row = str[i];
       String headerVal = header[i];
       sb.append(headerVal);
       for (int j = 0; j < row.length; j++) {
         sb.append(",").append(row[j]);
       }
       sb.append("\n");
    }
    System.out.println(sb.toString());

    BufferedWriter out = null;
    try {
       out = new BufferedWriter(new FileWriter("test.csv"));
       out.write(sb.toString());
    } catch (IOException e) {
       e.printStackTrace();
    } finally {
       if (null != out) {
         try {
          out.close();
         } catch (IOException e) {
          e.printStackTrace();
         }
       }
    }
}

}