Client and backend. Every class listed here is shared: the same code is compiled into your app and into your server.

package java.util.zip

Types

`class Adler32`
`class CRC32`
`class CheckedInputStream`
`class CheckedOutputStream`
`interface Checksum`
`class DataFormatException`
`class Deflater`
`class DeflaterOutputStream`
`class GZIPInputStream`
`class GZIPOutputStream`
`class Inflater`
`class InflaterInputStream`
`class ZipEntry`
`class ZipException`
`class ZipInputStream`
`class ZipOutputStream`