초보자를 위한 자바 2 21일 완성 - 최신개정판

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20 (Java) (instance variable).,. (object variable). ( )., VolcanoRobot....,.. (class variable). (class variable)... VolcanoRobot,... VolcanoRobot. 52

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22 (Java). (instance method).. (class method).,,, VolcanoRobot... 2,.. [ 1.1], ( ) VolcanoRobot.java. 1.1 VolcanoRobot.java 1: cl ass Vol canorobot { 2: St r i ng st at us ; 3: i nt speed; 4: f l oat t emperat ure ; 5: 6: voi d checktemperat ure () { 7: i f (t emperat ure > 660){ 8: st at us = "r et ur ni ng home"; 9: speed = 5; 10: } 11: } 12: 13: void showattributes () { 14: Syst em.out.pr i nt l n ("St at us : " + st at us ); 54

23 15: Syst em.out.pr i nt l n ("Speed : " + speed ); 16: Syst em.out.pr i nt l n ("Temperat ure : " + t emperat ure ); 17: } 18: } [ 1.1] 1 VolcanoRobot. 1 ({) 18 (}). VolcanoRobot St r i ng st at us ; i nt speed; f l oat t emperat ure ; status, speed, temperature.. status,,, String. speed int. temperature float. String String. String. String. VolcanoRobot

24 (Java) voi d checktemperat ure () { i f (t emperat ure > 660){ st at us = "r et ur ni ng home"; speed = 5; } }.,. checktemperature() [ 1.1] VolcanoRobot. temperature 660,. status returning home., 5 ( ). showattributes() voi d showat t r i but es () { Syst em.out.pr i nt l n ("St at us : " + st at us ); Syst em.out.pr i nt l n ("Speed :" + speed ); Syst em.out.pr i nt l n ("Temperat ure :" + t emperat ure ); } System.out.println(). VolcanoRobot. VolcanoRobot,. 56

25 VolcanoRobot. VolcanoRobot. VolcanoRobot (Application) main(), VolcanoRobot.. VolcanoRobot.java, ([ 1.1] 18 ).. publ i c st at i c voi d mai n (St r i ng [] argument s ) { Vol canorobot dant e = new Vol canorobot (); dante.status = "exploring"; dant e.speed = 2; dant e.t emperat ure = 510; } dant e.showat t r i but es (); Syst em.out.pr i nt l n ("I ncreasi ng speed t o 3. " ); dant e.speed = 3; dant e.showat t r i but es (); Syst em.out.pr i nt l n ("Changi ng t emperat ure t o 670. " ); dante.t emperature = 670; dant e.showat t r i but es (); Syst em.out.pr i nt l n ("Checki ng t he t emperat ure. " ); dant e.checktemper at ur e (); dant e.showat t r i but es (); main() VolcanoRobot. VolcanoRobot.java. SDK. 57

26 (Java) VolcanoRobot.java. (command line). j avac Vol canorobot.j ava [ 1.2] VolcanoRobot.java. SDK 1.4 http :// VolcanoRobot.java 1: cl ass Vol canorobot { 2: St r i ng st at us ; 3: i nt speed; 4: f l oat t emperat ure ; 5: 6: voi d checktemperat ure () { 7: i f (t emperat ure > 660){ 8: st at us = "r et ur ni ng home"; 9: speed =5; 10: } 11: } 12: 13: void showattributes () { 14: Syst em.out.pr i nt l n ("St at us : " + st at us ); 15: Syst em.out.pr i nt l n ("Speed :" + speed ); 16: Syst em.out.pr i nt l n ("Temperat ure :" + t emperat ure ); 17: } 18: 19: publ i c st at i c void main(st ring [] argument s ) { 20: Vol canorobot dant e = new Vol canorobot (); 21: dante.status = "exploring"; 58

27 22: dant e.speed = 2; 23: dant e.t emperat ure = 510; 24: 25: dant e.showat t r i but es (); 26: Syst em.out.pr i nt l n ("I ncreasi ng speed t o 3. " ); 27: dant e.speed = 3; 28: dant e.showat t r i but es (); 29: Syst em.out.pr i nt l n ("Changi ng t emperat ure t o 670. " ); 30: dante.t emperature = 670; 31: dant e.showat t r i but es (); 32: Syst em.out.pr i nt l n ("Checki ng t he t emperat ure. " ); 33: dant e.checktemper at ur e (); 34: dant e.showat t r i but es (); 35: } 36: } VolcanoRobot. VolcanoRobot.class SDK VolcanoRobot. j ava Vol canorobot VolcanoRobot. St at us :expl or i ng Speed :2 Temperat ure : I ncreasi ng speed t o 3. St at us :expl or i ng Speed :3 Temperat ure : Changing temperat ure to 670. St at us :expl or i ng Speed :3 Temperat ure :

28 (Java) Checking the temperat ure. Status :returning home Speed :5 Temperat ure : [ 1.2] main() main(). main(). 5,. static. main() VolcanoRobot,. dante dante. status exploring, speed 2, temperature dante showattribute(). status, speed, temperature System.out.println() speed temperature checktemperature() dante. temperature 660. status speed.,,. 60

29 .,. (Inheritance).....,. (subclass ), (s uperclass).,..,.., (hierarchy).. 6 1

30 (Java),,,.,. [ 1.2]. 1.2 A B. B A. B C, D, E. C, D, E B. Object.. Object,..,.., CommandButton., CommandButton CommandButton. CommandButton 62

31 CommandButton. CommandButton.. (s ubclass ing).., Object.. (class definition) Object. VolcanoRobot Object...,..,..,., ( ). 63

32 (Java) VolcanoRobot,., MarsRobot..., VolcanoRobot.java MarsRobot.java., MarsRobot VolcanoRobot. VolcanoRobot MarsRobot., MoonRobot, UnderseaRobot, DesertRobot?. Object. Robot.,. Robot,,. Robot WalkingRobot DrivingRobot. WalkingRobot, DrivingRobot.,,.. [ 1.3].,. WalkingRobot (ScienceRobot, GuardRobot, SearchRobot )., TwoLegged FourLegged Robot. 64

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41 . 1.? [Day 1] [Certification Practice]. 1. VolcanoRobot main() virgil VolcanoRobot,..,,,. 73

초보자를 위한 C# 21일 완성

초보자를 위한 C# 21일 완성 C# 21., 21 C#., 2 ~ 3 21. 2 ~ 3 21.,. 1~ 2 (, ), C#.,,.,., 21..,.,,, 3. A..,,.,.. Q&A.. 24 C#,.NET.,.,.,. Visual C# Visual Studio.NET,..,. CD., www. TeachYour sel f CSharp. com., ( )., C#.. C# 1, 1. WEEK