再來看看J2ME的架構:
optional packages
|
Profiles
|
configurations
optional packages :
廠商選擇性實作部份 例如: JDBC FOR CDC(JSR169)、Bluetooth API(JSR 82)等......
Profiles:
建構在configurations上,定義了與特定嵌入式裝置非常相關的擴充類別函式庫
1.Mobile Information Device Profile、The Wireless Messaging API、Information Module Profile
2Foundation Profile、Personal Basis Profile、Personal Profile...
configurations:
規範描述至少要符合的運算能力、供電能力、記憶體大小等與實作在特定類型的裝置上的J2ME平台所應提供的基本函式庫
分成兩大類CDC、CLDC
CDC(Connected DeviceConfiguration):
includes specific packages that are subsets of the J2SE equivalent:
java.lang
java.util
java.net
java.io
java.text
java.security
CLDC(Connected Limited Device Configuration):
includes specific packages that are subsets of the J2SE equivalent:
java.io
java.lang
java.util
javax.microedition.io
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