Extracts a ZIP archive into the target directory - Java File Path IO

Java examples for File Path IO:Zip File

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Description

Extracts a ZIP archive into the target directory

Demo Code


//package com.java2s;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.file.Path;

import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

public class Main {
    protected static final int bufferSize = 1024;

    /**//from w w w  .  j a v  a 2  s .com
     * Extracts a ZIP archive into the target directory
     * 
     * @param archive            Path to the archive to extract
     * @param targetDirectory      Directory to which the files will be extracted
     * @throws Exception
     */
    public static synchronized void extract(Path archive,
            Path targetDirectory) throws Exception {
        System.out.println("Unzipping " + archive.getFileName().toString()
                + "...");
        byte[] buffer = new byte[bufferSize];

        // extracts the source code archive to the target directory
        try (ZipInputStream zin = new ZipInputStream(new FileInputStream(
                archive.toFile()))) {
            ZipEntry ze;
            while ((ze = zin.getNextEntry()) != null) {
                Path extractedFile = targetDirectory.resolve(ze.getName());
                try (FileOutputStream fout = new FileOutputStream(
                        extractedFile.toFile())) {

                    int len;
                    while ((len = zin.read(buffer)) > 0) {
                        fout.write(buffer, 0, len);
                    }

                    zin.closeEntry();
                } catch (IOException ioe_inner) {
                    throw new Exception(
                            "Error while extracting a file from the archive: "
                                    + extractedFile);
                }
            }
        } catch (IOException ioe_outter) {
            throw new Exception("Error while extracting " + archive);
        }
        System.out.println("Unzipping " + archive.getFileName().toString()
                + " done.");
    }
}

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