Jini Technology

1. 2
R.Renuka,
R.VidhyaPriya,
Jini™
Technology

2. Contents
 Introduction
 JINI Architecture
 Featuresand Benefits
 JINI Services
Conclusion
Simply connect.

3. Introduction
Jini isadistributed-object computing
technology and isall about ubiquitousnetwork-
centric computing.
Jini technology, based on Javatechnology,
enablesdigital servicesto simply connect together.

4. JINI Architecture
 Jini – ApacheRiver
 Distributed systems in theform of
modular co-operating services.

6. Jini Specifications
 Thishelpsto built adistributed system
organized asafederation.
 Runtimeinfrastructure– providing
mechanisms,
- Adding
- Removing
- Locating
- Accessing services.

7. RuntimeInfrastructuresupportsRuntimeInfrastructuresupports
 Discovery
 Join
 Lookup

8. Main Goals of JINI
Sharing
Accessfrom anywhere
Easy to createand managethe
network devices

9. Thethreemajor componentsthat make
up arunning Jini system
 TheJini Client
 TheServer Locator
 TheJini Service

10. Featuresand Benefits
 Protocol Independence
 Location Independence
 Interface/ Implementation Decoupling
 Automatic PerformanceTuning
 Monitoring & Management

11. ServiceOrientedArchitectures
Jini hasbeen designed
from thebeginning to support
distributed ServiceOriented
Architectures(SOA) .

12. SOA’sEight Features
 Reliable
 Secure
 Homogeneous
 Latency iszero
 Bandwidth isinfinite
 Topology doesn't change
 Thereisoneadministrator
 Transport cost iszero

13. JINI Services
Runtimeservice:
TheRuntimeInfrastructureenablesJini services
to register with Lookup servicesthrough aprocess
called discovery and join.

14. Discovery – Jini enabled devicelocateslookup service.
Join – Deviceregister theservicewith lookup service.
Lookup – Enablestheclientsto locateand contact
services.

15. Discovery
 Used by both theJini servicesand Lookup
Locator servicesto announcetheir presenceon a
distributed Jini network.
 It usesthreetypesof sub protocols, depending on
thestateaJini component isin.

16. Sub Protocols
 Multicast Request Protocol
 Multicast Announcement Protocol
 Unicast Request Protocol

17. Other Services
 TheEcho service
 RemoteInterface
 Distributed Programming Models
- Leasing
- Distributed Events
- Transaction

18. Conclusion
Jini attemptsto raisethelevel of
abstraction for distributed systems
programming, from thenetwork protocol level
to theobject interfacelevel.