[Java] CSV Parser and Printer Example

1. CSV Parser and Printer Example

Downlaod: apache commons csv

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package javautility; import java.io.IOException; import java.io.StringReader; import java.io.StringWriter; import java.util.List; import org.apache.commons.csv.CSVFormat; import org.apache.commons.csv.CSVParser; import org.apache.commons.csv.CSVPrinter; import org.apache.commons.csv.CSVRecord; public class JavaUtility { static String testCsvPrinter() throws IOException { Object[] header = { "name", "gender", "age"}; StringWriter f = new StringWriter(); CSVPrinter c = new CSVPrinter(f, CSVFormat.DEFAULT); c.printRecord(header); c.printRecord(new Object[] { "Alice","female","20" }); c.printRecord(new Object[] { "Tom","male","23" }); f.close(); c.close(); System.out.println(f.toString()); return f.toString(); } static void testCsvParser(String data) throws IOException { CSVParser c = new CSVParser(new StringReader(data), CSVFormat.DEFAULT); List<CSVRecord> records = c.getRecords(); for( CSVRecord r : records ) { for( int i=0; i < r.size(); i++ ) { System.out.print( r.get(i) + "," ); } System.out.println(); } c.close(); } public static void main(String[] args) throws IOException { testCsvPrinter(); System.out.println("----------"); testCsvParser(testCsvPrinter()); } }

Result:

name,gender,age
Alice,female,20
Tom,male,23

----------
name,gender,age
Alice,female,20
Tom,male,23

name,gender,age,
Alice,female,20,
Tom,male,23,