Compress a file in Java

Description

The following code shows how to compress a file.

Example


//from   www  .j a  v a2s  . c  om
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

public class Main {

  public static void main(String[] args) throws IOException {
    String outputFile = "new.zip";
    // Default to maximum compression
    int level = 9;
    int start = 1;

    FileOutputStream fout = new FileOutputStream(outputFile);
    ZipOutputStream zout = new ZipOutputStream(fout);
    zout.setLevel(level);
    for (int i = start; i < args.length; i++) {
      ZipEntry ze = new ZipEntry("main.java");
      FileInputStream fin = new FileInputStream(args[i]);
      try {
        System.out.println("Compressing main.java");
        zout.putNextEntry(ze);
        for (int c = fin.read(); c != -1; c = fin.read()) {
          zout.write(c);
        }
      } finally {
        fin.close();
      }
    }
    zout.close();
  }
}




















Home »
  Java Tutorial »
    I/O »




Binary File
Byte Array
CharSet
Checksum
Console
Create Copy Move Delete
Directory
Drive
Encode Decode
File Attribute
File Lock
File System
GZIP
Jar File
NIO Buffer
Path
Scanner
StreamTokenizer
Temporary File
Text File
Zip