Unzip a folder or directory in Java

 Following code can be used to unzip a zip file and store the extracted files to a destination folder in Java.

	package com.blogspot.devnip.files.zip;
	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;
	/**
	* Unzip a compressed zip file
	*/
	public class UnzipAFile {
	/**
	* Unzip a zip file to given destination folder.
	*
	* @param zipFile
	* @param destinationDirectory
	* @throws IOException
	*/
	private static void unzip(String zipFile, String destinationDirectory) throws IOException {
	File destDir = new File(destinationDirectory);
	//create destination directory if missing.
	destDir.mkdirs();
	byte[] buffer = new byte[1024];
	try (ZipInputStream zis = new ZipInputStream(new FileInputStream(zipFile))) {
	ZipEntry zipEntry = zis.getNextEntry();
	// iterate over each entry.
	while (zipEntry != null) {
	File newFile = new File(destDir, zipEntry.getName());
	if (zipEntry.isDirectory()) {
	// if entry is a directory simply create the directory
	newFile.mkdirs();
	} else {
	// write file content
	try (FileOutputStream fos = new FileOutputStream(newFile)) {
	int len;
	while ((len = zis.read(buffer)) > 0) {
	fos.write(buffer, 0, len);
	}
	}
	}
	zipEntry = zis.getNextEntry();
	}
	zis.closeEntry();
	}
	}
	/**
	* Execution method for testing. Compressed file is created in base folder of this repository
	*
	* @param args
	* @throws IOException
	*/
	public static void main(String[] args) throws IOException {
	String fileZip = UnzipAFile.class.getResource("/zip/dir-compress.zip").getFile();
	String destinationDirectory = "./unzip-test";
	unzip(fileZip, destinationDirectory);
	}
	}

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