1. J2ME Based File Transfer and
Storage System
UML Diagrams

2. Class Diagram
uploads files
Server
ipAddress
sends files
sendsFiles()
retriveFiles()
provides files
MobileUser
name
mobileNumber
userName
uploadsFiles()
downloadsFiles()
viewFiles()
downloads files
Database
name
tableName
storesFiles()
provideResponse()

3. Authentication Use Case
getsRegistered
savesUserinfo
ProvidesUserCredentials
User
Application
Server1
validatesUserCredentials

4. User-Server Use case
uploadsFiles
User
savesFileOnDatabase
viewFiles
downloadsFiles
retrivesFileFromDatabase
ServerApp

5. Sequence Diagram
Serv
er
: User
Database
get registers
sav
es data in database
prov
ide user credentials
checks in database
sends the v
alidated result
if authorized user logs into the application
selects files and upload to serv
er
sav
es file into database
selects file to download
searches for file
sends response about file
if file exists then downloads file
logout of the application

6. Collaboration Diagram
2: saves data in database
4: checks in database
8: saves file into database
10: searches for file
Server
Database
5: sends the validated result
11: sends response about file
1: get registers
3: provide user credentials
6: if authorized user logs into the application
7: selects files and upload to server
9: selects file to download
12: if file exists then downloads file
13: logout of the application
: User

7. Thank You