Understanding JSR 185 - Quick notes

• Reduces fragmentation
• Improves interoperability
  
• Foundation for next gen. devices.
  
• Functionality
• Required
  
• CLDC 1.o
• MIDP 2.0
• WMA 1.1
• Optional
• MMAPI
• Size
• JAR 64KB
• JAD 5KB
• Persistent Storage 30KB
• Devices can use more but one cannot expect more.
• Heap size 128K required, 256K Recommended.
• Tickers(wake-up timers)
  
• Open ended in MIDP not required
• UI
• Screen size
• 96X54 screen size, 1 bit color depth required
• 125X125 required, 12 bit color depth recommended
  
• JSR 185 jpeg support, MIDP png support
• Text Messaging
• SMS capability required on GSM/UMTS networks
• Text box, Text field required.
• Phone book capability required to fill text field required on MIDLet.
• Multimedia
  
• MMAPI
• MIDI and tone sequence support
• 8 bit 8Khz mono PCM WAV supprt required for audio capture
• JPEG support
• Security
• Vague about protected domain defintion
• Specifies GSM/UMTS device behavior on untrusted code