CODEWITHSUNDEEP
javabzip2compression
keerthu praveen
keerthu praveen

Reputation: 87

Uncompressed file size in java

I am trying to find the size of uncompressed bz2 files using the following code. However,after running the code, I get the size as 0 bytes. Don't know what is wrong. Could someone please point out.

try{
                FileInputStream fin = new FileInputStream("/users/praveen/data1/00.json.bz2");
                BufferedInputStream in = new BufferedInputStream(fin);


                BZip2CompressorInputStream bzIn = new BZip2CompressorInputStream(in);
                  long size = 0;
                  while (bzIn.available() > 0)
                  {
                    byte[] buf = new byte[1024];
                    int read = bzIn.read(buf);
                    if (read > 0) size += read;
                  }

                  System.out.println("File Size: " + size + "bytes");
                  bzIn.close();
                //bzIn.close();
                }
                catch (Exception e) {
                throw new Error(e.getMessage());
                }

Upvotes: 0

Views: 304

Answers (1)

ControlAltDel
ControlAltDel

Reputation: 35011

It is very probable that BZip2CompressorInputStream does not fully implement the available() method. It probably just returns 0. Instead, you should try using InputStream#read(byte[]) and checking for a -1 return.

Upvotes: 2

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