Writing csv file to gzip in java

Question

how to write a csv file to a gzip in java. While writingmy csv type is getting changed to file type. I want it to be .csv??? this is the code i used...

public class zipWrite extends commonParts{

    public static void zip() throws Exception{

        zipWriter=  new FileOutputStream("C:\\Users\\myzip.gz");
        outputStream = new GZIPOutputStream(zipWriter);
        zipIn = new FileInputStream("C:\\Users\\mycsv.csv");
        byte []buffer = new byte[1024];
        int length;
        while ((length = zipIn.read(buffer)) > 0) {
            outputStream.write(buffer, 0, length);
        }
        zipIn.close();              
        outputStream.close();
        } 

}

Possible duplicate of [How to create a zip file in Java](https://stackoverflow.com/questions/1091788/how-to-create-a-zip-file-in-java) — injecteer, Aug 13 '18 at 10:33

lsantamaria · Accepted Answer · 2018-08-13T10:37:42.917

If you mean that the CSV file contained int the output Gzip file does not keep the CSV extension, the solution is to define the output file name as "myzip.csv.zip":

  private static final String INPUT_FILE = "C:\\Users\\mycsv.csv";
  private static final String OUTPUT_FILE = "C:\\Users\\myzip.csv.gz";

  public static void zip() throws IOException {
    byte[] buffer = new byte[2048];
    FileInputStream inputStream = new FileInputStream(INPUT_FILE);
    FileOutputStream outputStream = new FileOutputStream(OUTPUT_FILE);
    GZIPOutputStream gzipOutputStream = new GZIPOutputStream(outputStream);
    int length;
    while ((length = inputStream.read(buffer)) > 0) {
      gzipOutputStream.write(buffer, 0, length);
    }
    inputStream.close();
    gzipOutputStream.close();
  }

The file inside the gzip will contain the "myzip.csv" file.

Writing csv file to gzip in java

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