How to unzip a zip folder containing different file formats using Java-Collection of common programming errors

This is a good example in which he showed to unzip all the formats (pdf, txt etc) have look its quite

or you can use this code might work (i haven’t tried this)

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

public class ZipUtils
{
  private static final int  BUFFER_SIZE = 4096;

  private static void extractFile(ZipInputStream in, File outdir, String name) throws IOException
  {
    byte[] buffer = new byte[BUFFER_SIZE];
    BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(new File(outdir,name)));
    int count = -1;
    while ((count = in.read(buffer)) != -1)
      out.write(buffer, 0, count);
    out.close();
  }

  private static void mkdirs(File outdir,String path)
  {
    File d = new File(outdir, path);
    if( !d.exists() )
      d.mkdirs();
  }

  private static String dirpart(String name)
  {
    int s = name.lastIndexOf( File.separatorChar );
    return s == -1 ? null : name.substring( 0, s );
  }

  /***
   * Extract zipfile to outdir with complete directory structure
   * @param zipfile Input .zip file
   * @param outdir Output directory
   */
  public static void extract(File zipfile, File outdir)
  {
    try
    {
      ZipInputStream zin = new ZipInputStream(new FileInputStream(zipfile));
      ZipEntry entry;
      String name, dir;
      while ((entry = zin.getNextEntry()) != null)
      {
        name = entry.getName();
        if( entry.isDirectory() )
        {
          mkdirs(outdir,name);
          continue;
        }
        /* this part is necessary because file entry can come before
         * directory entry where is file located
         * i.e.:
         *   /foo/foo.txt
         *   /foo/
         */
        dir = dirpart(name);
        if( dir != null )
          mkdirs(outdir,dir);

        extractFile(zin, outdir, name);
      }
      zin.close();
    } 
    catch (IOException e)
    {
      e.printStackTrace();
    }
  }
}

Regards