Uncompressing Files - Java File Path IO

Java examples for File Path IO:Zip File

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Description

Uncompressing Files

Demo Code

import java.io.BufferedInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;

public class Main {
  public static void main(String[] args) throws Exception {
    ZipFile file = new ZipFile("file.zip");
    FileSystem fileSystem = FileSystems.getDefault();
    Enumeration<? extends ZipEntry> entries = file.entries();
    String uncompressedDirectory = "uncompressed/";
    Files.createDirectory(fileSystem.getPath(uncompressedDirectory));
    while (entries.hasMoreElements()) {
      ZipEntry entry = entries.nextElement();
      if (entry.isDirectory()) {
        System.out.println("Creating Directory:" + uncompressedDirectory
            + entry.getName());//from   w ww  . ja va 2 s  .  c  om
        Files.createDirectories(fileSystem.getPath(uncompressedDirectory
            + entry.getName()));
      } else {
        InputStream is = file.getInputStream(entry);
        System.out.println("File :" + entry.getName());
        BufferedInputStream bis = new BufferedInputStream(is);

        String uncompressedFileName = uncompressedDirectory + entry.getName();
        Path uncompressedFilePath = fileSystem.getPath(uncompressedFileName);
        Files.createFile(uncompressedFilePath);
        try (FileOutputStream fileOutput = new FileOutputStream(
            uncompressedFileName)) {
          while (bis.available() > 0) {
            fileOutput.write(bis.read());
          }
        }
        System.out.println("Written :" + entry.getName());
      }
    }
  }
}

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