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How can I programmatically uncompress a file that has been compressed using GZIP?

April 26, 2017COMPRESSED file gzip programmatically uncompress

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How can I programmatically uncompress a file that has been compressed using GZIP?

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Location: http://www.jguru.com/faq/view.jsp?EID=228417 Created: Oct 13, 2000 Modified: 2001-08-18 18:26:26.545 Author: Tim Rohaly (http://www.jguru.com/guru/viewbio.jsp?EID=10) The java.util.zip package has classes which let you do this. Here is a program using these classes that will GZIP-uncompress a file: import java.io.*; import java.util.zip.*; public class gunzip { public static void main(String[] args) { try { if (args.length != 1) { System.out.println(“Usage: java gunzip “); System.exit(1); } String filename = null; if (args[0].endsWith(“.gz”)) { filename = args[0].substring(0, args[0].lastIndexOf(“.gz”)); } else { System.out.println(“Inputfile must have extension .gz”); System.exit(1); } FileOutputStream out = new FileOutputStream(filename); System.out.println(“Extracting archive ” + args[0]); System.out.println(“”); FileInputStream file = new FileInputStream(args[0]); GZIPInputStream in = new GZIPInputStream(file); byte[] data = new byte[2048]; int len; while ((len