46 lines
1.3 KiB
Java
46 lines
1.3 KiB
Java
// compression/GZIPcompress.java
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// (c)2020 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://OnJava8.com for more book information.
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// {java GZIPcompress GZIPcompress.java}
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// {VisuallyInspectOutput}
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import java.util.zip.*;
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import java.io.*;
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public class GZIPcompress {
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public static void main(String[] args) {
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if(args.length == 0) {
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System.out.println(
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"Usage: \nGZIPcompress file\n" +
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"\tUses GZIP compression to compress " +
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"the file to test.gz");
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System.exit(1);
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}
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try(
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InputStream in = new BufferedInputStream(
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new FileInputStream(args[0]));
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BufferedOutputStream out =
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new BufferedOutputStream(
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new GZIPOutputStream(
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new FileOutputStream("test.gz")))
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) {
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System.out.println("Writing file");
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int c;
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while((c = in.read()) != -1)
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out.write(c);
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} catch(IOException e) {
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throw new RuntimeException(e);
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}
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System.out.println("Reading file");
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try(
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BufferedReader in2 = new BufferedReader(
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new InputStreamReader(new GZIPInputStream(
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new FileInputStream("test.gz"))))
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) {
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in2.lines().forEach(System.out::println);
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} catch(IOException e) {
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throw new RuntimeException(e);
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}
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}
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}
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