( ъ - ߋ ś)
Allen Hollub ߜ
JavaWorld
͕͟ :݇ͅ
ݟ̈́ collection wrapper ̓ ޟ
雂 bag Wrapper . ̄͟ ނ ˂ ̈́
˂ java.util.Collection Bag .霗 ͂ collection ˜
̓ ̈́ ϟ ŋߊ ߍ ˜߅ ޟ ߇ .˜
. ߊ
韙 .˝ ނ ͍ ŋ ˜߅ ߃͛ ̈́
.ŋ combo box ŋ ߂ ߌ ͕ ͌ ߍ
ŋ .ߌ ͅ ̈́ ˜ ŋ ڟ߅ џ
˜߅ ̈́ ˜ ނΛ ߚ .͟ ͖ ˂ ߛ
韟 ˛ ԋ collection .˜ ނ ͟ collection ڟ
ݟͅ "ˇ ̈́ ߎ ڟ ̉ ˌ ˃
霗 Â ̓͂ ԃ ͍ ̓͂ .ߌ ܂ ͟
. ş ߅ ˌ ͅ Listener ߍ ˛ ԋ ŗ
͘ .˜ ͘˗ ݂ ˜߅ ˜ џ ̈́ ˜
.̘ ͟ Ο ޟ͟ ̓ ͟ ˟ Â
雏 ߉ ߛ download ޛ ş ˗ ˟ߊ ˟
collection ނ 鋗̈́ ϟ ܗ .˟ ˝
џ ̓ Ĉ ś ̈́ .ŋ ˟ ͟ߍ ˜ џ ͟
ͅߗ ߕ ̈́ .ŋ ˖ ŋ ߍ ߊ
(ڈߗ) ޟ ŋ ś ̈́ ˌ ނ combo box ߍ
霂 ˟) ˜ ݟ͕ ڟ ͌ ݂ ŋ ߍ
釛 ݟ͕ ˌ ˌ ܂ ͟ ŋ ş ܃ ݟ͕ ͇
韝 ͟ ͇ ڟ ͝ ˜ ͘ .(ߌ ܂
͕ ˟ Â ڟ ͝ Ԋ ͘ ޟ .˜̘ ͟
.˜ ͟ Ο ͘
ܗ
͂ ԃ ˂ ݂ ߄ ͂ ş ߜ ޟ
韚 雜 ނ ͅ ͂ .ŋ
韚 . 韞 ΅ ŗ ԋ߅ ̈́
. ߅ ˌ ŋߊ ̈́ ˜߅ ΅
ޟ˃ ̈́ ͘ .˜ ̓ ͂ߊ ߇ ˟ ̈́
() Presentation 韚 coupling 關 ˟ ٟԅ ٟ
韂 ŕ HR ̓͂ ̓ ߛ ̓ .ߌ ˂ ͂ ΅
ߚ . ނ錜 ˜͂ З ˜͂ ͂ ݂ ˜͂
ˌ ͘ .ߌ џ ݅ ͝ ߇ ߍ
ނ lable ˜͂ ݂ ˟ ߍ ߊ ˟ ̈́
͛ ł ߌ ͕ ߌ ͌ ˟ ޟ ͘ .˝
韂 ߂ ߊ ̓͂ ̓ event ͝ . ߊ ˜͂
͂ 雂̓ ڟ .˜ џ ԟ ͂
.ߌ ͇ Ο PalmPilot ̓ ˜߅ ˟ ߌ ͇ Ȝ ߅
. ͂ ş ߂ џ widget ͆
ߋ .˜ ͟ ˟ ˌ ˟ lable Ŝߕ ˜
widget ъ ) renderer swing widget ͆ 삇
閂Ԝ widget ߛ ޅ ˜ (˜ ݟͅ
.ŋ ނ " swing
Bag ͂ ̈́
test К ŋ .ݟ˜ ՜ ̓͂ ߉ ˂ џ
. ͂ collection ߜ Bag .˝ ނ bag ˂
ߊ ߃͛ ̓͂ ԃ ˜߅ ŋ collection
bag Linked list collection ( ) main() .˜
bag ˟ ߅ .˟Ε collection ͍ ˜ Є
˂ Ο ՜ ޟ ˟߅ ̙ .ŋ collection ڟ
.ŋ ͂ ߂ bag ޟ ߇ .˟
郂 Decorator .ˌ Gong-of-Four Decorator ߘ Bag
˂ ņ ˃ ˟Ε decorated ݅
. Decorator 阙 ͂ ː ܂ java.io .˜ ˂
Inputstream ͕ۜ Ε Buffered Input stream ߛ ̓
read() ߊ͕ ݂ ޟ ߇ .˜ decorate
decorate 陂 Inputstream Inputstream ޟ
Bag . Inputstream ͕ ş Buffered Inputstream
鋗̈́ ϟ Ι ߍ ˜߅ ˜ decorate collection Ο
.
.霗 ܂ Bag Constructor ˌ wrap collection ŗ
. 韖 ˟߅
ߛ ̓ .˟ Ö͛ ˟ ݟ ͅ ݂ java.io.Decorators
ނ Inputstream
雂̓ ͘ Buffered Inputstream Decorator
韂 wrapped collection ˂ bag ߛ .ŋ ڂԊ
.韜 ɚ wrapped collection " .ŋ ͅԛ iterator
collection ˟ߊ ͘ .˟ ݂ bag wrapper ٟ ͂
З ͟ ޟ ̈́ ڟ ˟ Ö͛ ˟ ɚ
.˟
܂ . 霂 ł陛 ˜ Bag
.雜 ŋߊ Listener ڟ Ε ̓ ( Ԋ) addActionListener()
韂雜 ߅ ˝ Θ ݅ Listener
) ݅ ϟ ޛ ː Ԋ ˜ .
釜 ˟ ğ Ԋ while ڛ Є (create ui()
酛 .(ˌ ˝ߊ ͝ ̈́ ͇ ͝ ޅ ޟ) ߌ Ε ߋ
) ˜ bag ̈́ ϟ ͕ creat ui()
event ̓ Listner Є (˜ ͂ џ ܃ ŗ ߍ
.˟ ݟ՜ ݟ͕ ̓ ߉
