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"OESPJEΞϓϦΛ࡞Δ
,.$OPOZMFOF
ɾ֓ɾηοτΞοϓɾ+BWB લ
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ࣗݾհ
w OPOZMFOF ͷʹΕΜ
w ,.$ճ
w ΧʔϏΟͰ͢
w ͋ͭΊͯΧʔϏΟྑ͍Ͱ͢
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ࣗݾհ
w OPOZMFOF ͷʹΕΜ
w εϚϗΞϓϦͱ͔
w 5XJUUFS(JU)VCFUD
w IUUQOPOZMFOFIBUFOBCMPHKQ
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͜ͷεϥΠυ
w ॳΊͷिΛ·ͱΊͨͷ
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ࠓΔ͜ͱ
"OESPJE֓
ڥηοτΞοϓ
IFMMPXPSME
+BWB લ
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"OESPJE
֓
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"OESPJE
ͱ
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"OESPJEͱ
w (PPHMF͕։ൃ͍ͯ͠Δ04
w Φʔϓϯιʔε
w εϚʔτϑΥϯɺλϒϨοτ͚
w ࠷৽ /PVHBU
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"OESPJEͱ
w ಛ
w ແྉʢಛڐྉআ͘ʣ
w ͍ΖΜͳϝʔΧʔ
w 9QFSJB 40/:
(BMBYZ 4BNTVOH
/FYVT (PPHMFͷ0&.
)5$
FUD
w ൺֱతࣗ༝͕ߴ͍ʢεϚʔτϑΥϯͷதͰʣ
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ଞͷ04
w J04
w ຊͰγΣΞͰ͔͍
w BOESPJEͷӬԕͷϥΠόϧ
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ଞͷ04
w 8JOEPXT1IPOF
w /0,*"ͱ)5$͙Β͍ʜ
w ͱࢥͬͨΒ࠷ۙຊͰ࡞ΒΕͯΔ
w 7"*01IPOF."%04."FUD
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"OESPJE։ൃ
w جຊແྉ
w Φʔϓϯιʔε
w *%& "OESPJE4UVEJP
w ΤϛϡϨʔλ
w 1MBZ4UPSFʹެ։͢ΔࡍL
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"OESPJE
ͷଆ
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"OESPJEͷ෦
w -JOVYΧʔωϧΛ࠾༻
w TIFMMʹೖΔͱίϚϯυ͑Δ
w ෦Φʔϓϯιʔε
w IUUQTBOESPJEHPPHMFTPVSDFDPN
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"OESPJEΞϓϦ͕ಈ͘·Ͱ
w KBWBϑΝΠϧ͔ΒKBWBDͰDMBTTϑΝΠϧ
w KBWBͷόΠτίʔυ
w DMBTTϑΝΠϧ͔ΒEYͰEFYϑΝΠϧ
w EBMWJLͷόΠτίʔυ
.java .class .dex
javac dx
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"OESPJEΞϓϦ͕ಈ͘·Ͱ
w %BMWJL7.
w +7.Ͱͳ͍
w d"OESPJE
w "35 "OESPJE3VOUJNF
w EFYΛ༧ΊίϯύΠϧͳͲˠૣ͍ʂྑ͍ʂ
w "OESPJEd
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No content
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"OESPJE
ͷ։ൃ
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։ൃڥ
w +BWB
w ਖ਼֬ʹ"OESPJE+BWB
w "OESPJE/͔Β0QFO+%,KBWB
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։ൃڥ
w "OESPJE4UVEJP
w *OUFMMJ+ϕʔε
w 8JOEPXTNBD-JOVY
w ແྉ
w FDMJQTFαϙʔτऴྃ
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04όʔδϣϯ
w ݹ͍όʔδϣϯ͕ݱ
w ࠷৽ͷ"1*͕͑ͳ͍
w Ҏ্ఔ͕Φεεϝ
˞ӈͷදલ
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υΩϡϝϯτ
w IUUQTEFWFMPQFSBOESPJEDPNJOEFYIUNM
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ڥ
ηοτΞοϓ
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ηοτΞοϓ
1$ηοτΞοϓ
ิ
ଆηοτΞοϓ
)FMMP8PSME
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1$ηοτΞοϓ
w "OESPJE4UVEJPೖΕΔ͚ͩ
w ΑΓ0QFO+%,ಉࠝ
w "OESPJEͷ4%,ಉࠝ
w IUUQTEFWFMPQFSBOESPJEDPNTUVEJP
JOEFYIUNM
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ิ
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ηοτΞοϓ ਪ
w (FOZNPUJPO
w ૉૣ͍ΤϛϡϨʔλ
w ඇ༻Ͱແྉ
w 7JSUVBM#PY͕ඞཁ
w IUUQTXXXHFOZNPUJPODPNGVO[POF
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ηοτΞοϓ ਪ
w "%#Λ1"5)ʹՃ
w "OESPJEΛ1$͔Βૢ࡞͢Δπʔϧ
w *OTUBMMVOJOTUBMMFUD
w ίϯιʔϧ͔ΒBEC͕͑ΔΑ͏ʹ
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ଆ
ηοτΞοϓ
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64#σόοά
w ։ൃऀ͚ͷϞʔυ
w BECίϚϯυΛୟ͚ΔΑ͏ʹͳΔ
w 1$͔Β"OESPJEΛૢ࡞͢Δ
w ΤϛϡϨʔλͰ0/ʹͳ͍ͬͯΔͣ
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64#σόοά༗ޮ
ઃఆΛ։͘
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64#σόοά༗ޮ
ใΛ։͘
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64#σόοά༗ޮ
Ϗϧυ൪߸Λ࿈ଧ
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64#σόοά༗ޮ
Ϗϧυ൪߸Λ࿈ଧ
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No content
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64#σόοά༗ޮ
b։ൃऀ͚Φϓγϣϯ`ొ
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64#σόοά༗ޮ
64#σόοάΛ0/
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1$ʹଓ
w ʹ"%#ڐՄը໘͕ग़ͨΒڐՄ
w υϥΠόͷ֤ʑ͕ඞཁ͔
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)FMMP8PSME
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)FMMP8PSMEͷྲྀΕ
w ϓϩδΣΫτΛ࡞͢Δ
w ίϯύΠϧ࣮ͯ͠ߦ
w )FMMP8PSME
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ϓϩδΣΫτͷ࡞
w l4UBSUBOFX"OESPJE4UVEJPQSPKFDUz
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ϓϩδΣΫτͷ࡞
w )FMMP8PSMEΞϓϦ
w $PNQBOZ%PNBJOదʹ ྫKQLND
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ϓϩδΣΫτͷ࡞
w 1IPOFBOE5BCMFU"OESPJEҎ্
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ϓϩδΣΫτͷ࡞
w &NQUZ"DUJWJUZΛબ
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ϓϩδΣΫτͷ࡞
w ͦͷ··pOJTI͠Βͭ͘
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ϓϩδΣΫτͷ࡞
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"OESPJE4UVEJPઃఆ
w *OTUBOU3VOΛEJTBCMF
w ϗοτεϫοϓʹΑΓߴʹมߋΛద༻͢Δػೳ
w ·ͩ·Δ͜ͱ͕ଟ͍ͷͰEJTBCMF
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"OESPJE4UVEJPઃఆ
w ઃఆ#VJME*OTUBOU3VOΛEJTBCMF
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)FMMP8PSME
w 3VObBQQ`ΛΫϦοΫ
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)FMMP8PSME
w ΠϯετʔϧઌΛબ
ଓதͷσόΠε
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)FMMP8PSME
w ΠϯετʔϧઌΛબ
ΤϛϡϨʔλ
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)FMMP8PSME
w ิ
w (FOZNPUJPOͷਓࣗͰىಈͤ͞Δ
w ϓϥάΠϯ͋Γ·͢
w *OUFM)"9.ͷΠϯετʔϧΛٻΊΒΕΔ͜ͱ
w ը໘ʹैͬͯΠϯετʔϧ
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)FMMP8PSME
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ηοτΞοϓྃ
w ͓ർΕ༷Ͱͨ͠
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+BWB
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+BWB
+BWBʹ͍ͭͯ
Ϋϥεͱ
จ๏
ͦͷଞ͍Ζ͍Ζ
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+BWB֓ཁ
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+BWB֓ཁ
w "OESPJE+BWBͰͳ͘+BWBͷ֓ཁ
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+BWBͱ
w ΦϒδΣΫτࢦϓϩάϥϛϯάݴޠ
w 4VO͕։ൃɺݱࡏ0SBDMF
w ࠷৽όʔδϣϯ+BWB4&
w ϥϜμࣜͷαϙʔτ
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+BWBͱ
w +7. +BWB7JSUVBM.BDIJOF
w +BWBͷ࣮ߦڥ
w KBWBDͰίϯύΠϧ͞ΕͨόΠτίʔυΛ࣮ߦ
w 04ͷґଘੑΛऔΓআ͘
w l8SJUFPODF
SVOBOZXIFSFz
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+BWBͱ
w KBWBϑΝΠϧΛKBWBDͰίϯύΠϧ
w όΠτίʔυ DMBTTϑΝΠϧ
ͷੜ
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+BWBͱ
w όΠτίʔυΛ֤ڥͷ+7.Ͱ࣮ߦ
˞"OESPJEόΠτίʔυΛ࣮ߦ͠ͳ͍
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ิ
w +BWBͱ+BWB4DSJQUશ͘ҧ͏ͷ
w +BWB͕ྲྀߦ͔ͬͯͨΒࣅ໊ͨલʹͳ͚ͬͨͩ
ʺ
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ิ
w "OESPJE͍ΘΏΔʮ+BWBͲ͖ʯ
w ίʔυΛॻ͘ʹ+BWBͱΈͳͯ͠ྑ͍
w ৄࡉIUUQRVFTFSBIBUFOBCMPHKQFOUSZ
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)FMMP8PSME
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8JOEPXTͰͷ+BWB
w λʔϛφϧ্Ͱ+BWB+BWBDΛಈ͔͢߹
w +%,ΛΠϯετʔϧ͢Δ
w IUUQXXXKBWBESJWFKQJOTUBMM
w "OESPJE4UVEJPಉࠝͷ+%,Λ͏
• C:\Program Files\Android\Android
Studio\jre\bin\java.exe
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w ͱΓ͋͑ͣ)FMMP8PSME
• Hello.java
)FMMP8PSME
public class Hello {
public static void main(String[] args) {
System.out.println("Hello, world!");
}
}
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)FMMP8PSME
$ javac Hello.java
$ ls
> Hello.class Hello.java
$ java Hello
> Hello, world!
ˡίϯύΠϧ
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)FMMP8PSME
$ javac Hello.java
$ ls
> Hello.class He…
$ java Hello
> Hello, world!
ˡόΠτίʔυ
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)FMMP8PSME
$ javac Hello.java
$ ls
> Hello.class Hello.java
$ java Hello
> Hello, world!
ˡ࣮ߦ
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ͬ͘͟Γઆ໌
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• Hello.java
• Hello Ϋϥεͷએݴ
)FMMP8PSME
public class Hello {
public static void main(String[] args) {
System.out.println("Hello, world!");
}
}
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• Hello.java
• main ϝιου(≒ؔ)ͷએݴ
)FMMP8PSME
public class Hello {
public static void main(String[] args) {
System.out.println("Hello, world!");
}
}
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• Hello.java
• System.out.println ϝιουΛݺͼग़͠
)FMMP8PSME
public class Hello {
public static void main(String[] args) {
System.out.println("Hello, world!");
}
}
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public class Hello {
public static void main(String[] args) {
String hello = "Hello, world!”;
System.out.println(hello);
}
}
• Hello.java
• hello ม Λ࡞
)FMMP8PSME
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Ϋϥε
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˞࣮༻ੑ
͔Βͷઆ໌
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Ϋϥεͱʁ
w 㲈ܕ KBWBͷ߹
w ॲཧมΛͻͱ·ͱΊʹͨ͠ͷ
w େɺػೳຖʹΫϥεΛ࡞Δ
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Ϋϥεͷ͍͍ͱ͜Ζ
w ࢁม࣋ͪӡͿͷͭΒ͍ͷͰΫϥεͰҰؾʹ
w ϝιουࢁॻ͘ͷͭΒ͍ͷͰΫϥεʹ·ͱΊΔ
w ΫϥεʹೖΕͨมͷॲཧΫϥεͷதͰ
w 4USJOHJOU͚ͩͩͱม͕Կҙຯͯ͠Δ͔͔Β
ͳ͍ͷͰΫϥεʹ
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ྫ
w ͱΓ͋͑ͣ
w 4USJOH จࣈྻ
w JOU ࣈ
w ͚ͩΛ͏ঢ়گ
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ྫ
w ອըΛཧ͍ͨ͠
w ອըͷऔಘɾએ༻จॻ࡞ɾFUDʜ
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public class Hello {
…
public static void printManga(
String title,
String author,
String company,
String bland,
String volumeName,
int price,
String description,
String obi) {
System.out.println(author + "ͷ" + title +
volumeName + "! " + company + bland + “ࣾӡΛ͔͚ͨେ࡞!: \n
આ໌ͪ͜Β” + description + obi + “ஈ” + price);
}
}
એ༻จॻΛ࡞͢ΔϝιουΛ࡞Δ
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public class Hello {
…
public static void printManga(
String title,
String author,
String company,
String bland,
String volumeName,
int price,
String description,
String obi) {
System.out.println(author + "ͷ" + title +
volumeName + "! " + company + bland + “ࣾӡΛ͔͚ͨେ࡞!: \n
આ໌ͪ͜Β” + description + obi + “ஈ” + price);
}
}
એ༻จॻΛ࡞͢ΔϝιουΛ࡞Δ
ˡඞཁͳมୡ
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public class Hello {
…
public static String getTitleFromServer(Server
server) {
server.getTitle().trim()
}
public static String getAuthorFromServer(Server
server) {
server.getAuthor().trim()
}
publ...
}
ອըσʔλΛαʔόʔ͔Β࣋ͬͯདྷΔ
ˢ4USJOHҰͭͣͭஸೡʹฦ͢ϝιουΛ࡞Δ
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public class Hello {
public static void main(String[] args) {
// server ͳ͍͚Ͳઆ໌ͷͨΊ
String title = getTitleFromServer(server);
String author = getAuthorFromServer(server);
Str…
printManga(title, author, compa…);
}
...
}
αʔόʔ͔Β͖࣋ͬͯͨͷΛએ༻จॻʹ͢Δ
ˢมΛҰͭҰͭऔಘ
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public class Hello {
public static void main(String[] args) {
// server ͳ͍͚Ͳઆ໌ͷͨΊ
String title = getTitleFromServer(server);
String author = getAuthorFromServer(server);
Str…
printManga(title, author, compa…);
}
...
}
αʔόʔ͔Β͖࣋ͬͯͨͷΛએ༻จॻʹ͢Δ
ˢมΛҰͭҰͭϝιουʹೖΕ͍ͯ͘
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public class Hello {
public static void main(String[] args) {
String title = getTitleFromServer(server);
String author = getAuthorFromServer(server);
Str…
printManga(title, author, compa…);
}
public static void printManga(
String title,
String author,
String company,
String bland,
String volumeName,
int price,
String description,
String obi) {
System.out.println(author + "ͷ" + title + volumeName + "! " + company + bland + “ࣾӡ
Λ͔͚ͨେ࡞!: \n આ໌ͪ͜Β” + description + obi + “ஈ” + price);
}
public static String getTitleFromServer(Server server) {
server.getTitle()
}
public static String getAuthorFromServer(Server server) {
server.getAuthor()
}
pub…
...
}
·ͱΊΔ
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ཁ݅Ճ
w ʮҧ͏એจষग़ͯ͠΄͍͠ΜͩΑͶʯ
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public class Hello {
…
public static void printMangaShort(
String title,
//String author,
//String company,
//String bland,
//String volumeName,
int price,
//String description,
//String obi
) {
System.out.println(titile + " Ձ֨: " + price);
}
}
͍એจষͷՃ
ˡཁΒͳ͍ͷ
ίϝϯτΞτ
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public class Hello {
public static void main(String[] args) {
String title = getTitleFromServer(server);
String author = getAuthorFromServer(server);
Str…
printManga(title, author, compa…);
printMangaShort(title, price);
}
public static void printManga(
String title,
String author,
String company,
String bland,
String volumeName,
int price,
String description,
String obi) {
System.out.println(author + "ͷ" + title + volumeName + "! " + company + bland +
“ࣾӡΛ͔͚ͨେ࡞!: \n આ໌ͪ͜Β” + description + obi + “ஈ” + price);
}
public static String getTitleFromServer(Server server) {
server.getTitle()
}
public static String getAuthorFromServer(Server server) {
server.getAuthor()
}
pub…
public static void printMangaShort(
String title,
//String author,
//String company,
//String bland,
//String volumeName,
int price,
//String description,
//String obi
) {
System.out.println(titile + " Ձ֨: " + price);
}
}
·ͱΊΔ
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ཁ݅Ճ
w ʮ͋ɺ͋ͱॳΊ͔Β͙ͭΒ͍ອըஔ͍ͯͯ
΄͍͠ʯ
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public class Hello {
public static void main(String[] args) {
String manga1Title = "ΏΔΏΓ";
String manga1Author = "ͳΓ";
Str...
String manga2Title = "ΏΏࣜ";
String manga2Author = "ࡾ্খຢ";
Str...
printManga(manga1Title,
manga1Author,
...
);
printMangaShort(manga1Title, manga1Price);
printManga(manga2Title,
manga2Author,
...
);
ॳظອըՃ
ˡ֤มՃ
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public class Hello {
public static void main(String[] args) {
String manga1Title = "ΏΔΏΓ";
String manga1Author = "ͳΓ";
Str...
String manga2Title = "ΏΏࣜ";
String manga2Author = "ࡾ্খຢ";
Str...
printManga(manga1Title,
manga1Author,
...
);
printMangaShort(manga1Title, manga1Price);
printManga(manga2Title,
manga2Author,
...
);
ॳظອըՃ
ˡQSJOU
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̷̸̴ʙ͇̓̈́
w զʑԿߦ͜ͷϑΝΠϧΛॻ͍͍ͯ͘ͷ͔
w ॳΊͷອը͕ͭ૿͑ͨΒߦ૿͑Δ
w ϝιουͷҾΛຖճॻ͍͍ͯ͘ͷ͔
w ອըͷཁૉ૿͑ͨΒͲ͏͢Δͷ͔
w ग़൛ച্ײFUD
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͜͜ͰΫϥεͷొ
w ࠓճManga ΫϥεΛఆٛ͢Δ
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* Manga.java
public class Manga {
private String title;
private String author;
private String company;
private String bland;
private String volumeName;
private int price;
private String description;
private String obi;
public Manga(String title, String author, String company,
String bland, String volumeName, int price,
String description, String obi) {
this.title = title;
this.author = author;
this.company = company;
this.bland = bland;
this.volumeName = volumeName;
this.price = price;
this.description = description;
this.obi = obi;
}
}
ˡ֤มʢϝϯόมʣ
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* Manga.java
public class Manga {
private String title;
private String author;
private String company;
private String bland;
private String volumeName;
private int price;
private String description;
private String obi;
public Manga(String title, String author, String company,
String bland, String volumeName, int price,
String description, String obi) {
this.title = title;
this.author = author;
this.company = company;
this.bland = bland;
this.volumeName = volumeName;
this.price = price;
this.description = description;
this.obi = obi;
}
}
ˣੜɾॳظԽʢίϯετϥΫλʣ
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* Manga.java
public class Manga {
private String title;
private String author;
private String company;
private String bland;
private String volumeName;
private int price;
private String description;
private String obi;
public Manga(String title, String author, String company,
String bland, String volumeName, int price,
String description, String obi) {
this.title = title;
this.author = author;
this.company = company;
this.bland = bland;
this.volumeName = volumeName;
this.price = price;
this.description = description;
this.obi = obi;
}
}
ˡϝϯόม
ʹೖ
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public class Manga {
…
public void print() {
System.out.println(author + "ͷ" + title +
volumeName + "! " + company + bland +
“ࣾӡΛ͔͚ͨେ࡞!: \n આ໌ͪ͜Β” + description + obi +
“ஈ” + price);
}
public void printShort() {
System.out.println(titile + " Ձ֨: " + price);
}
}
ˣΫϥεͷมΛಡΜͰprint
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w ͜ΕΛHelloΫϥεͰ͏
w MangaΦϒδΣΫτΛ࡞͠ɺϝιουΛݺͿ
w Ϋϥεఆٛʢઃܭਤʣ
w ΦϒδΣΫτ࣮ࡍͷσʔλ
.BOHBΫϥε
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public class Hello {
public static void main(String[] args) {
Manga yuruyuri = new Manga("ΏΔΏΓ", "ͳΓ", ...);
Manga yuyushiki = new Manga("ΏΏࣜ", "ࡾ্খຢ", ...);
yuruyuri.print();
yuruyuri.printShort();
yuyushiki.print();
yuyushiki.printShort();
// server ͳΜͯͷͳ͍͚Ͳઆ໌ͷͨΊ
Manga manga = server.getManga();
manga.print();
manga.printShort();
}
}
ˢMangaΦϒδΣΫτΛ
࡞ɾॳظԽ
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public class Hello {
public static void main(String[] args) {
Manga yuruyuri = new Manga("ΏΔΏΓ", "ͳΓ", ...);
Manga yuyushiki = new Manga("ΏΏࣜ", "ࡾ্খຢ", ...);
yuruyuri.print();
yuruyuri.printShort();
yuyushiki.print();
yuyushiki.printShort();
// server ͳΜͯͷͳ͍͚Ͳઆ໌ͷͨΊ
Manga manga = server.getManga();
manga.print();
manga.printShort();
}
}
ˢMangaΦϒδΣΫτ
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public class Hello {
public static void main(String[] args) {
Manga yuruyuri = new Manga("ΏΔΏΓ", "ͳΓ", ...);
Manga yuyushiki = new Manga("ΏΏࣜ", "ࡾ্খຢ", ...);
yuruyuri.print();
yuruyuri.printShort();
yuyushiki.print();
yuyushiki.printShort();
// server ͳΜͯͷͳ͍͚Ͳઆ໌ͷͨΊ
Manga manga = server.getManga();
manga.print();
manga.printShort();
}
}
ˡMangaΫϥεʹఆٛ͞Εͨ
ϝιουΛݺͿ
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public class Hello {
public static void main(String[] args) {
Manga yuruyuri = new Manga("ΏΔΏΓ", "ͳΓ", ...);
Manga yuyushiki = new Manga("ΏΏࣜ", "ࡾ্খຢ", ...);
yuruyuri.print();
yuruyuri.printShort();
yuyushiki.print();
yuyushiki.printShort();
// server ͳΜͯͷͳ͍͚Ͳઆ໌ͷͨΊ
Manga manga = server.getManga();
manga.print();
manga.printShort();
}
}
ˡMangaΫϥεʹఆٛ͞Εͨ
ϝιουΛݺͿ
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public class Hello {
public static void main(String[] args) {
Manga yuruyuri = new Manga("ΏΔΏΓ", "ͳΓ", ...);
Manga yuyushiki = new Manga("ΏΏࣜ", "ࡾ্খຢ", ...);
yuruyuri.print();
yuruyuri.printShort();
yuyushiki.print();
yuyushiki.printShort();
// server ͳΜͯͷͳ͍͚Ͳઆ໌ͷͨΊ
Manga manga = server.getManga();
manga.print();
manga.printShort();
}
}
ˢMangaΦϒδΣΫτ͝ͱ
αʔόʔ͔Βऔಘ
˞serverͰMangaΦϒδΣΫτΛ࡞ͬͯฦ͢ॲཧΛॻ͍͍ͯΔͱ͢Δ
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ศར
w HelloΫϥεͰMangaΫϥεͷϝιου
Λݺͼग़͚ͩ͢
w Mangaͷཁૉ͕૿͑ͯMangaΛ
มߋ͢Εྑ͍
w Mangaͷ෦ͷมHelloΒͳ͍
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ศར
w Ξχϝ#%Λཧ͢Δ͜ͱʹͳͬͯʜ
w AnimeBDΫϥεΛ࡞Δ
w HelloΫϥεͰAnimeBDΦϒδΣΫτΛ࡞
w ΦϒδΣΫτͷϝιουΛୟ͘
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KBWBͰ
w Ұ෦Λআ͍ͯશͯΦϒδΣΫτͰߏ
w int / char / boolean ͳͲϓϦϛςΟϒܕͭҎ֎
w จࣈྻ String
ΦϒδΣΫτ
ˠΦϒδΣΫτࢦ 001
ݴޠ
String k = "KMC";
k.length();
k.replace("K", "O");
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ͱΓ͋͑ͣ
w ॻ͍ͯͨΒͳΜͱͳ͔ͬͯ͘͘Δ
w ͜͏͍͏ͷ͕ඞཁͳΜͩͳ͋ఔͰ0,
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จ๏
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͔͜͜ΒHJTU
IUUQTHJTUHJUIVCDPNOPOZMFOF
FBGGFGBGDFFBC