head first java second edition phần 4 pot

... methods must be implemented in the first concrete subclass in the inheritance tree.  Every class in Java is either a direct or indirect subclass of class Object (java. lang. Object).  Methods ... new Dog(); c = new Canine(); c.roam(); } } File Edit Window Help BeamMeUp % javac MakeCanine .java MakeCanine .java: 5: Canine is abstract; cannot be instantiated c = new Canine(); ^...

Ngày tải lên: 12/08/2014, 19:20

... and chains) 43 3 Object serialization 43 4 Implementing the Serializable interface 43 7 Using transient variables 43 9 Deserializing an object 44 1 Writing to a text file 44 7 java. io.File 45 2 Reading ... selectable list) 41 7 Code Kitchen (The Big One - building the BeatBox chat client) 41 8 Exercises and puzzles 42 4 Saving object state 43 1 Writing a serialized object to a file...

Ngày tải lên: 12/08/2014, 19:20

... command-line output. public class Mix4 ( int counter = OJ public static void main (String [) args) ( int count = 0; Mix4 [) m4a =new Mix4[20lj int x = 0; while (I I) m4a [x] = new Mix4 (); m4a(x] . counter = m4a(xl .counter + ... new Foo(); Foo c = a; 86 chapter 4 primitives and references Primitive Types Integer byte 8 bits -128 to 127 short 16 bits -32768 to 32767 int 32 bits -2 147 483 6...

Ngày tải lên: 12/08/2014, 19:20

... have. I. 6. Down 7. 2 9. 3. 12. 4. 13. 5. 14. 8. 16. 10. 17. II. 19. 15. 21. 16. 22 18. 23. 20. 24. 21. 1 64 chapter 6 Ready-bake: GameHelper import java. io.*i import java. util.·: pUblic class GamaBelper This ... by magic, there really Is such a thing. But it's not an array, it's an ArrayLisf. A class in the core Java library (the API). The java Standard Edition (whi...

Ngày tải lên: 12/08/2014, 19:20

... = Double.parSeDouble(" ;42 0. 24 H ) ; You'll get a runtime exception: % java Wrappers Exception in thread "m ain N java .lang.NumberFormatException: two at java. lang.lnteger.parselnt(Integer .java: 40 9) at java .lang .lnteger.parselnt(Integer .java: 45 8) at Wrappers.main(Wrappers .java: 9) 292 chapter 10 Every method or constructor that parses a String can throw...

Ngày tải lên: 12/08/2014, 19:20

... type. ~t. ~"\ -:>r>f" il'c. Jd, V ~ ~~ t; ~ '(P - ~f:j a.setMessage( 144 , 1, 44 , 100); neldsf.3~ tyP ' . ~ Yd'ry dej>eJldj e. Thl$ 1$ i NOTE ~ 0I'l ~ ~ ~~ ~~~ ~ f.o ~ .il"t tot" tJ. . ... new Sequence(Sequence.PPQ, 4) ; Track track = seq.createTrack(), MidiEvent event = null; ShortMessage first = new ShortMessage(); first. setMess...

Ngày tải lên: 12/08/2014, 19:20

... baby Down 13. Manager's rules 1. Artist's sandbox 21. Lots to say 2. Swing's dad 14. Source 'sbehavior 4. Border's catchall 23. Choose many 3. Frame's purview 15. Borderbydefault 5. Java look 25. Button's pal 5. Help's home 18. User's behavior 9. ... as text: -l.uGa.meoharaot -"'~ava/1anIJ 8t:rIDSi [weapoQt Nava/lang/ 8t:r'lDS;...

Ngày tải lên: 12/08/2014, 19:20

... listening for client requests comingin for port 42 42. o Server application makes a ServerSocket, on a specific port SarverSocket serverSock: new S&rV8rSocket (42 42); 'II ' ': ~ ; ';;; ~' ., ... from the server application(whatever is running at po rt 42 42). import java .io.*; r_., L is in ,o"a. nt1 :. L-_~ tlass ;:,Q<o~~ .,} import java .net.* ;~...

Ngày tải lên: 12/08/2014, 19:20

... that's making the compiler fail? %javac Jukebox3 .java JukeboK3 .java: 15 : cannot find symbol symbol method sort (java .util.ArrayList<Song» location: class java. util .Collections Collections.sort(songList); 1 error And of course yOll probabl y ... sort ~deY . 562 chapter 16 collections with generics Here's what you have so far; without the sort: impo4t java. util.*; impor...

Ngày tải lên: 12/08/2014, 19:20

... RMI class MlnlMusicService (a universal service, implements Service) 1'i.~.o.!~6~ ~= ~"' ~- ~~== ;:~ ~w import j avax . sound. midi ; import java. io.*; import javax.sving.*; illlport java. art.*; illlport java. awt.event .*; public clau MiniMusicService implements Service { ... you need an enterprise applil;atUm server . In java, that means a java 2 Enterprise Edi...

Ngày tải lên: 12/08/2014, 19:20