import net.lingala.zip4j.io.ZipOutputStream; //导入依赖的package包/类
public static void crearArchivoComprimido(OutputStream zipStream, List<SubmissionJudge> solutions) {

		
		// Create a buffer for reading the files

		try {
			// Create the ZIP file
			java.util.zip.ZipOutputStream out = new java.util.zip.ZipOutputStream(zipStream);
			// Compress the files
			for (SubmissionJudge solution : solutions) {
				// Add ZIP entry to output stream.
				out.putNextEntry(new ZipEntry(solution.getFilename()));
				// Transfer bytes from the file to the ZIP file
				out.write(solution.getCode().getBytes());
				out.closeEntry();
			}
			out.close();

		} catch (IOException e) {
			System.out.println(e.getMessage());
		}
	}
 

import net.lingala.zip4j.io.ZipOutputStream; //导入依赖的package包/类
public static void crearArchivoDatasets(OutputStream zipStream, List<DatagenDataset> datasets) {

		// Create a buffer for reading the files

		try {
			// Create the ZIP file
			java.util.zip.ZipOutputStream out = new java.util.zip.ZipOutputStream(zipStream);

			// Compress the files
			for (DatagenDataset dataset : datasets) {
				String nom = dataset.getId() == null ? "data" : String.valueOf(dataset.getId());
				out.putNextEntry(new ZipEntry(nom + ".in"));
				out.write(dataset.getInput().getBytes());

				out.putNextEntry(new ZipEntry(nom + ".out"));
				out.write(dataset.getOutput().getBytes());

				out.closeEntry();
			}
			out.close();

		} catch (IOException e) {
		}
	}
 

import net.lingala.zip4j.io.ZipOutputStream; //导入依赖的package包/类
public ZipInputStream(InputStream in, String fileName, String pass, String encyptionMethod) throws ZipException {
    super(in);

    zipParameters = new ZipParameters();
    zipParameters.setCompressionMethod(Zip4jConstants.COMP_DEFLATE);
    zipParameters.setCompressionLevel(Zip4jConstants.DEFLATE_LEVEL_NORMAL);
    zipParameters.setEncryptFiles(true);

    String encParts[] = encyptionMethod.split("-");

    if( encParts[0].equals("AES")) {
        zipParameters.setEncryptionMethod(Zip4jConstants.ENC_METHOD_AES);
        if (encParts[1].equals("128")) {
            Log.d(TAG, "Encryption AES Strength 128-bit");
            zipParameters.setAesKeyStrength(Zip4jConstants.AES_STRENGTH_128);
        } else {
            Log.d(TAG, "Encryption AES Strength 256-bit");
            zipParameters.setAesKeyStrength(Zip4jConstants.AES_STRENGTH_256);
        }
    } else {
        zipParameters.setEncryptionMethod(Zip4jConstants.ENC_METHOD_STANDARD);
        Log.d(TAG, "Standard Encryption");
    }
    // TODO: If password not set, don't run backup?
    zipParameters.setPassword(pass);
    //                                    parameters.setSourceExternalStream(true);
    //                                    parameters.setFileNameInZip(mediaFileName);

    byteOutputStream = new ByteArrayOutputStream(bufferSize);

    zipOutputStream = new ZipOutputStream(byteOutputStream);
    zipOutputStream.putNextEntry(new File(fileName), zipParameters);
    zipOutputStreamFinished = false;
    byteArraySize = 0;

    Log.d(TAG,"New zip file: "+fileName);

}