java .gz file reading and writing

compression and decompression of .gz file

• import java.io.FileInputStream;
• import java.io.FileOutputStream;
• import java.io.InputStream;
• import java.io.OutputStream;
• import java.util.zip.GZIPInputStream;
• import java.util.zip.GZIPOutputStream;
• 
  
• public class CompressUncompress {
• 
  
• public static void main(String[] args) throws Exception {
• 
  
•     //compressing a file to .gz file
• FileInputStream fis = new FileInputStream("original.txt");
• FileOutputStream fos = new FileOutputStream("compressed.gz");
• GZIPOutputStream gos = new GZIPOutputStream(fos);
• Create(fis, gos);
• 
  
• //Uncompressing a file to .gz file
• FileInputStream fis2 = new FileInputStream("compressed.gz");
• GZIPInputStream gis = new GZIPInputStream(fis2);
• FileOutputStream fos2 = new FileOutputStream("uncompressed.txt");
• Create(gis, fos2);
• 
  
• }
• 
  
• public static void Create(InputStream is, OutputStream os) throws Exception {
• int oneByte;
• while ((oneByte = is.read()) != -1) {
• os.write(oneByte);
• }
• os.close();
• is.close();
• }
• 
  
• }