import java.io.File;
import java.util.ArrayList;

import net.lingala.zip4j.core.ZipFile;
import net.lingala.zip4j.exception.ZipException;
import net.lingala.zip4j.model.ZipParameters;
import net.lingala.zip4j.util.Zip4jConstants;

public class CreatePasswordProtectedZipExample
{
	public static void main(String[] args) 
	{
		try {
			//This is name and path of zip file to be created
			ZipFile zipFile = new ZipFile("C:/temp/test.zip");

			//Add files to be archived into zip file
			ArrayList<File> filesToAdd = new ArrayList<File>();
			filesToAdd.add(new File("C:/temp/test1.txt"));
			filesToAdd.add(new File("C:/temp/test2.txt"));

			//Initiate Zip Parameters which define various properties
			ZipParameters parameters = new ZipParameters();
			parameters.setCompressionMethod(Zip4jConstants.COMP_DEFLATE); // set compression method to deflate compression

			//DEFLATE_LEVEL_FASTEST 	- Lowest compression level but higher speed of compression
			//DEFLATE_LEVEL_FAST 		- Low compression level but higher speed of compression
			//DEFLATE_LEVEL_NORMAL 	- Optimal balance between compression level/speed
			//DEFLATE_LEVEL_MAXIMUM 	- High compression level with a compromise of speed
			//DEFLATE_LEVEL_ULTRA 		- Highest compression level but low speed
			parameters.setCompressionLevel(Zip4jConstants.DEFLATE_LEVEL_NORMAL); 

			//Set the encryption flag to true
			parameters.setEncryptFiles(true);

			//Set the encryption method to AES Zip Encryption
			parameters.setEncryptionMethod(Zip4jConstants.ENC_METHOD_AES);

			//AES_STRENGTH_128 - For both encryption and decryption
			//AES_STRENGTH_192 - For decryption only
			//AES_STRENGTH_256 - For both encryption and decryption
			//Key strength 192 cannot be used for encryption. But if a zip file already has a
			//file encrypted with key strength of 192, then Zip4j can decrypt this file
			parameters.setAesKeyStrength(Zip4jConstants.AES_STRENGTH_256);

			//Set password
			parameters.setPassword("howtodoinjava");

			//Now add files to the zip file
			zipFile.addFiles(filesToAdd, parameters);
		} 
		catch (ZipException e) 
		{
			e.printStackTrace();
		}
	}
}