JAVA Eğitim Notları - yildiz.edu.tr

1 JAVA E itim Notlar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

2 / 5!$M 1 3% G 6 5!$M # " 5!$M ' ( KOOO ) * ! I 5!$M ' ( + = A= > 2 C A5 2 & 4 A! 2 I 6 & A% G 2 + " 5 & A% 2 AD2 A >+T 7 :T " 2 5 6 ' + 2 5!$M * A H H H 7 :H " 2 + R 5!$MUR5!$M+H H H 7 :H V W XR * 5!$M Y + R R5!$M H H H +H H +H +H HZ77 LQH +H H H +H H H 7 :H H 4 ! * 3 N " 6 + 5!$MUR5!$M+H H H 7 :H .! ! 1 + 7 Resim 4: Ornek 1 ile yaz lan uygulama sonunda ekrana gelecek olan mesaj penceresi M 3= 6 + import *; import *; public class Mesaj { //1. sat r public Mesaj() { //2. sat r (null, "java ile hayat guzel :)"); } public static void main(String[] args) { //3. sat r Mesaj A = new Mesaj(); (0); } } Y A +T 2 3 = 6 [ & 3 = 6 " + >+T \ = >+T \ = 2 ) * * 5 + ' 3 * ( ,6 3 ( ,6 % #@ 5 " F " A + = E 7 2 !)]

3 ' + 3 = A26 . 3 6 A 2 F " 1 8 7 ( +( 3 6 & D 3= 6 " ] M " ! 3 6 3 6 Y " C 7[ & #@ 5 " (= & - + 2 ( ( 3 6 + /*--- ---*/ javac java Mesaj /*--------------------*/ ! * + R ^OO R H ) 3 # ; . " M " ! " " " " Y " + public class Kitap { String kitap_adi; String yazar_adi; int sayfa_sayisi; float ucret; .. float ucretiSoyle() { .. } void ucretiDegistir(float yeni_ucret) { .. 9 } } " 3 6 .. 3 6 3 6 ! 4 / " 3 N 6 3 N 6 " / / " ! # ; 3 6 > >?? 3" 6 = " = " " 3 < 6 = " < " " 8 7 ! & '' < " 1 # ; " " ! " " " " & " = " " " " C < & & " 0I 1 < & & A 2 " F ! 10Y / " " & public class Kitap { String kitap_adi; String yazar_adi; int sayfa_sayisi; public int sayfaSayisiniVer() { return sayfa_sayisi; } public void kitabiGoruntule() { ("\nRapor"); ("**"); ("Kitap Adi: " + kitap_adi); ("Yazari: " + yazar_adi); ("Sayfa Sayisi: " + sayfa_sayisi); ("\n"); } public static void main(String[] args) { Kitap kitap1 = new Kitap(); Kitap kitap2 = new Kitap(); = "Puslu Kitalar Atlasi"; = 238; = "Ihsan Oktay Anar"; = "Vadideki Zambak"; = 307; = "Balzac"; (); (); } } & + Rapor ** Kitap Adi: Puslu Kitalar Atlasi Yazari: Ihsan Oktay Anar Sayfa Sayisi: 238 Rapor ** Kitap Adi: Vadideki Zambak Yazari: Balzac Sayfa Sayisi: 307 Y + C / " !))))

4 Y " + " < 11 / " / " / " " & " D 7 K N < " _ 7 4 A2 K 4 A2 " ! / 4 A2 " F " 1 & ' $ # ; & D ! / 3 6 + ' ' ( ( ' ' ' ! & ' & + " E\ " N E\ " < E\ C & E\ @ & E\ & ' ( ( = & ! KOO + public class Degisken { public static void main(String arg[]) { int a = 200; 12 ("a degiskeninin sakladigi deger: " + a + " degeridir"); } } + / + + KOO # [ 3 6 & / + ) ! 3 - 4 ' - 0#! 1 ) : EK 7:^ :9` Q:9 ?K 7:^ :9` Q:^ K E`K ^Q9 ?`K ^Q^ 9 E8 KK` `^K O`Q 9P: ^^P 9O9) ?9 KK` `^K O`Q 9P: ^^P 9O^) 7 E7K9 7K^ " : E? ` :OK9K`:^%?`9] 9 E? 7 ^8^Q8`7`:9QK`7P^O%?`O9 : ' ' ;32 F ] ) " ) ! ; ! 3 - F " < " Y + <+% = 3 - 2 " M " K ' ( . + ! 0 * " QPP`Q ! `POOO T OOO9 A 2 T OOO8 A 2 !<>II 0 !<>II 7K9 M " 7 I<@99P8E8 A EP2 !<>II 13<# 3 - 2 " " " ( " & ' 2 & C + D N D < D )! / /- 01 ( # 2 " A 2 % ! ? " C + public class Degiskenler { public static void main(String arg[]) { int a; //sat r 1 a = 200; //sat r 2 int b, c; //sat r 3 b = 100; //sat r 4 c = 400; //sat r 5 int d = 0; //sat r 6 ("a nin degeri: " + a); ("a nin degeri: " + a + " b nin degeri: " + b); d = a + b + c; ("Toplam deger: " + d); } } 5 + + KOO + KOO + 7OO $ + ^OO " 7; K; F Q; `; " < : ' ' 2 > >?

5 ? # ; T + T + T + TT + T 14T6 + 3 T + A 2 T + Y L Q; #@ 5 " (I & #@ 5 " (= & 5 + import *; //s1 public class IsimGir { public static void main(String arg[]) { String isim, yas; //s2 isim = (null, "Lutfen isminizi giriniz: "); //s3 yas = (null, "Simdi de yasiniz giriniz: "); //s4 String rapor = "Adiniz: "+isim+"\nYasiniz: "+yas; //s5 (null, rapor); //s6 (null, "Adiniz:\t"+isim+"\nYasiniz:\t"+yas);s7 (0); } } K; % & ` :; #@ 5 (I & A2 ! ` :; P; & < #@ 5 (= & A2 ! P; ^; P Q ^; 2 3HH6 # " ) # 2 & < " " + public class Sabitler { public static void main(String arg[]) { 15 final double BIRIM_UCRET = ; double sure = ; //BIRIM_UCRET = ; //s1 ( Bu ay odeme bedeli: + BIRIM_UCRET * sure + liradir. ); } } ILI=N0>L%$ 7; % 7; HH " < < " ;- ;- " + 2 @ " 5 " ! " 2 Y D a " ! Y + > - " " < " " & I 4 ` :; ! < " ?@ ,@ A@ B - 2 !)))

6 ? I 4 P; < < ?>@ ,> B> A> - " 2 4 " C + * U 7OD * U * ? :D * 7: ?U Y + * U 7O U QD * ?U :D HH* U * ? : U b QD HH EU QD ?? C, - 2 7 7 @ * U * ?7D *??D ! * U * E7D *EED # ;- " 2 16& 3 6 3" 6 7 O >> D> - 2 3 - 6 I " " 3 6 % 3" 6 = ` UU P " UU cU " " " 3 6 3" 6 C ` cU P EE FF 0 1 ;- 2 " " dd " " " " ee " " " " import *; public class AnaSinif{ public static void main(String arg[]){ boolean deger1 = true; boolean deger2 = false; boolean sonuc1 = deger1 (null, "deger1: " +deger1+"deger2: "+deger2+ "deger1 && deger2 ->"+ sonuc1); boolean sonuc2 = deger1 || deger2; (null, "deger1: " +deger1+"\ndeger2: "+deger2+ "\ndeger1 || deger2 -> "+ sonuc2); deger2 = true; sonuc1 = deger1 (null, "deger1: " +deger1+"\ndeger2: "+deger2+ "\ndeger1 && deger2 -> "+ sonuc1); deger1 = false; deger2 = false; sonuc1 = deger1 || deger2.}}

7 (null, "deger1: " +deger1+"\ndeger2: "+deger2+ "\n\ndeger1 && deger2 -> "+ sonuc1); } } G@ H@ G>@ H> - " 2 " " " C + ` \ P HH" 17: f 7O HH ` \U ` HH 01 3( &" ( ( ;- " ( Y ! " 1 $ $ " " " ! + #! ,G % 0# ' !# ! '1 % ,G 0# ' !# ! '1 +% ,G 0# ' !# ! '1 ,G @ # 0# ' !# ! '1@ 0# ' !# # 1 ,G @ # 0# ' !# # 1 ,G # 0# ' !# ! '1 " = U 7K`:PQ^98D " " U D HH" 7 K`:PQ8K%9 F ! public class AnaSinif{ public static void main(String arg[]){ double k = ; ("k nin deeri: "+ k); int c; c = (int)k; //burada double t r nden bir deer int t r nden bir degiskene atanyor. ("c nin degeri: "+c); } } 7K 8Q ! A 2 7K I 3( &" ( ( ' : $ $ A 2 = < 37K6 7K I " 18 < ; F < Y + public class AnaSinif{ public static void main(String arg[]){ String a = "12"; int b = 13; String c = a + b; ("Sonuc: "+c); } } 4 ?)))))))

8 < < " KP 7K7` ! < F @ < - I " I A2 = #@ 5 (I & A2 ` ! < @ < ; I I A2 + import *; public class AnaSinif{ public static void main(String arg[]){ String yas = (null, "Yasinizi giriniz: "); int sonuc = (yas) * 3; (null, "Hesap sonucu: "+sonuc); } } + I / ) 0IJ1K ,,G - ( ( ( ) L / & # /- & # 0IJ1K ,,G - ( ( ( # ( ( / & # / ) 0IJ/MN1K ,,G - # ( ( ( ) L / ) & < " " < + < =/ % & ' < =/ O 0< =1 $ 1 < UU < B 3 6 3 6 " < =/+ - 3 0< =1 $ + 19 3 6 3 6 % O 3 6 7 3 6 E7 import *; public class AnaSinif{ public static void main(String arg[]){ String isim = (null, "Lutfen adnizi giriniz"); int uzunluk = ; String mesaj = "Isminiz "+uzunluk+" tane karakterden olumaktadir"; (null, mesaj); String gercekSifre = "kkVVuuNN"; String girilenSifre = (null, "Sifreyi giriniz: "); boolean sonuc = (girilenSifre); (null, "Girdiiniz sifre: "+sonuc); } } F #@ 5 " (I & A2 < < . D < " < B ! 2 &"'( ! D & # ; " " M " 1 & +HH H K H7 : 7H H H 20 " 3!)))))))))

9 > 6 # ; " M " " L ^; #@ 5 " (= & "" +HH H K H7 : 7H ( " " AI I 2 " ( P2 # # & ; F < ! + ;' ' ) ' & 3 6 < ; K 7 ` 7 K 7 : K * + B - BQJ 'R #BQJ 'I/M/JB " <( < K " + Q ,Q )S ) J/Q K L & ! &" ( 2 5 ! " 1 " " " ! " T ! 8 ] 3" 6 ] g h " g h " /** **/ import *; class Main { public static void main(String[] args) { int k = 10; { int c = 20; (null, "k nin degeri: "+k+ "\nc nin degeri: "+c); } (0); } } /**/ " " " " = g h " g " " ! " " " " ! F k'nin tan ml oldu u faliyet alan nda kullanmaya kalksayd k hata mesaj alacakt k. /** **/ import *; class Main2 { public static void main(String[] args) { int k = 10; { int c = 20; } (null, "k nin degeri: "+k+ "\nc nin degeri: "+c); /*c degiskeni bu faliyet alan nda tan ml degildir*/ (0); } } //bu program al mayacakt r /**/ ] + !))

10 " " " " I " " ] & ! 2 " " / " " " /** **/ import *; class Deyimler1 { public static void main(String[] args) { String notStr; int not; notStr = (null, "Notunuzu giriniz: "); not = (notStr); if(not > 50) { (null, "Tebrikler. Bu dersten gectiniz :)"); } (0); } } /**/ & " " A 3 6 c2 ! " " F \ PO " " ! 3$ 6 < I " I A 3$ & 1 C = 6 2 5 PO; 1 .. if(ifade) { .. } else { .. } " " " " ! + /** **/ import *; class Deyimler2 { public static void main(String[] args) { String gectiMesaji = Tebrikler! Bu dersten gectiniz! ; String kaldiMesaji = Malesef bu dersten kaldiniz. ; String notStr; int not; notStr = (null, "Notunuzu giriniz: "); not = (notStr); if(not > 50) { (null, gectiMesaji); } else { (null, kaldiMesaji); } (0); } } /**/ ! " +2 & " " K " @ " " " " C : /** **/ import *; class Deyimler3 { public static void main(String[] args) { String kaldiMesaji = "Dereceniz F: Bu dersten kaldiniz.}}