OnJava8-Examples/io/GZIPcompress.java

//: io/GZIPcompress.java
// <20>2015 MindView LLC: see Copyright.txt
// {Args: GZIPcompress.java}
import java.util.zip.*;
import java.io.*;

public class GZIPcompress {
  public static void main(String[] args)
  throws IOException {
    if(args.length == 0) {
      System.out.println(
        "Usage: \nGZIPcompress file\n" +
        "\tUses GZIP compression to compress " +
        "the file to test.gz");
      System.exit(1);
    }
    BufferedOutputStream out;
    try (InputStream in = new BufferedInputStream(
            new FileInputStream(args[0]))) {
      out = new BufferedOutputStream(
              new GZIPOutputStream(
                      new FileOutputStream("test.gz")));
      System.out.println("Writing file");
      int c;
      while((c = in.read()) != -1)
      out.write(c);
    }
    out.close();
    System.out.println("Reading file");
    BufferedReader in2 = new BufferedReader(
      new InputStreamReader(new GZIPInputStream(
        new FileInputStream("test.gz"))));
    String s;
    while((s = in2.readLine()) != null)
      System.out.println(s);
  }
} /* (Execute to see output) *///:~