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/* Extract Zip File With Subdirectories Using Command Line Argument Example. This Java example shows how to extract a zip file and create required sub-directories using Java ZipInputStream class. */ import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.util.Enumeration; import java.util.zip.ZipEntry; import java.util.zip.ZipFile; import java.util.zip.ZipInputStream; public class ExtractFileSubDirectories { public static void main(String args[]) { /* * This program expects one command line argument * * 1. Path of zip file */ //fetch command line argument String strZipFile = args[0]; if(strZipFile == null || strZipFile.equals("")) { System.out.println("Invalid source file"); System.exit(0); } //call method to unzip/extract files from zip file unzip(strZipFile); System.out.println("Zip file extracted!"); } private static void unzip(String strZipFile) { try { /* * STEP 1 : Create directory with the name of the zip file * * For e.g. if we are going to extract c:/demo.zip create c:/demo * directory where we can extract all the zip entries * */ File fSourceZip = new File(strZipFile); String zipPath = strZipFile.substring(0, strZipFile.length()-4); File temp = new File(zipPath); temp.mkdir(); System.out.println(zipPath + " created"); /* * STEP 2 : Extract entries while creating required * sub-directories * */ ZipFile zipFile = new ZipFile(fSourceZip); Enumeration e = zipFile.entries(); while(e.hasMoreElements()) { ZipEntry entry = (ZipEntry)e.nextElement(); File destinationFilePath = new File(zipPath,entry.getName()); //create directories if required. destinationFilePath.getParentFile().mkdirs(); //if the entry is directory, leave it. Otherwise extract it. if(entry.isDirectory()) { continue; } else { System.out.println("Extracting " + destinationFilePath); /* * Get the InputStream for current entry * of the zip file using * * InputStream getInputStream(Entry entry) method. */ BufferedInputStream bis = new BufferedInputStream(zipFile .getInputStream(entry)); int b; byte buffer[] = new byte[1024]; /* * read the current entry from the zip file, extract it * and write the extracted file. */ FileOutputStream fos = new FileOutputStream(destinationFilePath); BufferedOutputStream bos = new BufferedOutputStream(fos, 1024); while ((b = bis.read(buffer, 0, 1024)) != -1) { bos.write(buffer, 0, b); } //flush the output stream and close it. bos.flush(); bos.close(); //close the input stream. bis.close(); } } } catch(IOException ioe) { System.out.println("IOError :" + ioe); } } } /* Sample usage of this prgram java ExtractFileSubDirectories c:/sampleDoc.zip Output of this program would be Zip file extracted! This program will extract file from C:/sampleDoc.zip to c:/sampleDoc directory with all required sub-directories. */ |
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