José Valente de Oliveira e Fernando Lobo. Introdução à. Programação de Computadores em Java

Transcrição

1 José Valente de Oliveira e Fernando Lobo Introdução à Programação de Computadores em Java

2 José Valente de Oliveira e Fernando Lobo The Ualg Informatics Lab Universidade do Algarve

3 Índice...4 CONCEITOS FUNDAMENTAIS...5! " # # ASPECTOS DA CRIAÇÃO DE UM PROGRAMA...13 $ % & # CODIFICAÇÃO DE INFORMAÇÃO...25 ' ( ) * + *, + - *, +. / !. 3 " # $ % & 4. PRIMEIROS PROGRAMAS...33 $ % 4 6! 4 / 7 " : ; <=>?@ A B C B ; DB E D? F? GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGH I $ % & * J 6 5 $ % K 6 4 $ % & 6 2

4 ESTRUTURAS DE CONTROLO DE FLUXO if " if else / # $ % & / 4 / 6 1 / / switch $ % & / / = while GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG = for GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG = CB while GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG I C?< B = >B C=>=B?< GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG ( $ 0. MODULARIDADE DE FUNÇÕES...74 ( ( K? D F DB =; B C D B D B GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGI 0 " " ( ( K. $ % & 4 8 K " 4 K " / = =@ A B = > =>? C = GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG > = C? ;?? C B GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG B! B = C =" B GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG I $ % & TABELAS ( * 5 0 ( 4 7 * ( K 6 $ % &

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22 Adicionar 1 a número; Adicionar a nota do aluno a soma; # " I 0 0-*-$ &( #3-( -0$+*7 -& -G %$3%( -" 3- ' ( % %*3-&" %3#) % 5 - ' ( $+ "' " %*3-&" %3#) %0 K P+ 7 %H #3' %*( -" 3- &-2 &-0-" 3%5 %0 " % L+ &( % $+ ( + -( K - $+ " 5#P+ %$P+ 0-" P+ %$P+ > Se número for zero Senão Escrever Tabela vazia Dividir soma por número; I 0 #3-&% L#" -( ' ( % &-2-3#P+ *#( #3%5 % 5 - ' ( % 0-/' " $#% 5 - %$ -0 M 0$&-) -( 0-7 %H #3' %*( -" 3- " % L+ &( % + ' $+ ( + -( M " /' %" 3+ $+ " 5#P+ L%, %$P+ C -2-3#& %$P+ %3D $+ " 5#P+ Repetir os passos seguintes até chegar ao último aluno Ler a nota do próximo aluno da tabela Adicionar 1 a número; Adicionar a nota do aluno a soma;

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

24 N -&( #" %5 + & Q -$#0P+ M " 3&%5 % K %5 % &+ $-00%( -" 3+ + " -$3+ & + " *#? %P+ " %*? + &#3( +. %2 &-0-" 3%5 + " % 2 1?#" % O & 5-0$&#3+ ' 0%" 5 + ' ( L*' G +?&%( % 5 % 0-? '#" 3- L+ &( %6

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

26 W X Y Z[\ ]^ III Codificação de informação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n H#30. ;. 2 %&% ' ( $+ ( 2 #*%5 + & /' - &-2 &-0-" 3- #" 3-#&+ 0 ' 0%" 5 + n H #30. -G#03#&P+ > n #" 3-#&+ 0 5#L-&-" 3-0 I 3D %/ '# )#( + 0 / ' %" 3+ " 4 ( -&+ 0 5#L-&-" ( + 0 &-2 &-0-" 3%& $+ ( n H #30 N -&-( + 0 /' - ) -& %? + &% / ' %* % / ' %" 3#5 %5 - &-2 &-0-" 3%5 % 2 + & ' ( $-&3+ " 4 ( -&+!00+ *-) %" + 0 %+ 0 0#03-( %0 5 - " ' ( -&%P+

28 $! 32340/ / 09+ E F / J92+ C / / +,> / + -T +/ / +,< B + 30 LK < ,2 + LK 3A/ B., D K < L< N < < R < < < < M < >. / LK 3A/ B., / I / /. R > 6 I / 09. R 40/ 5 / A/ B.,. 3< 7 A; ,; +923/. 3< : ?> <. 8 92/ / 5 / +, D ; > 8 92/ ,0 K K : ? / ; J 3 +,0 : ?> 0 D+ -4. < 747 = = 7* * * <. 3 +,; +923/ / 5 / +, D E F. > / / +,< ,; +923/. 3 3F LK > * / ,+ 8 92/ J C > F. C /. 3 LK 3A/ B., A; D < C /. 3 5 / 4.4+, 7 0 LK / F. 3> 0 0/ LK C 330/ < ,/ / / 09+ EF A; D >. /. C /. 3 6 I / / J B /. 3., / / +, /. C / I / 09. 3> /. 3 40/. 3 LK 3A/ B.,. 3< / +,; +923/. -T 0 ; + + < 40/ D+ 09 K / >>> ,+ 8 92/ J / A/ B.,. 3 :K <L<N? / 0 3/ ,; +923/. -T 0 ; N 409A+/ D+ 09 K / >>> < 8 0, I / / C / / 0 3/ / / +,> / 8,. <. 6 I / 09. LN L 6 + B / 3A/ B.,. 3 / / L 40/ 5 /

29 +, D ; L>. / 5 / 32340/ B + 30 < ,; +923/. C 5 / > 332/ 121 (3) = 1* * * C <. 6 I / 09. LN L 6 + B I / 09. LQ L 6 + B + 30 LK > H / / / ; 0/ /. 5 / 32340/ / 09+ EF. -. / / 3A/ B., / / T. 3> 3 -. / ,2 +/ / / 09+ EF. B 26 J B + 30 N > 0 30 ; I / K + N K 6 + B + 30 LK < B + 30 < B + 30 N B + 30 L> base 10 base 3 base 2 base 1 (pauzinhos) %&% %*D( #03-( %0 H #" 1&# $#( %*. + ' 3&+ 0 0#03-( %0 $+ ( #" 3-&-00-0P #03-( % + $3%* H %0- > G %5 -$#( %* H %0- >. 2 + & 2 -&( #3#&-( $+ " ) -&0-0 #( -5#%3% %&% + 0#03-( % H #" 1&#+ I 0 $+") -& H #" 1&#+ 2 %&% + $3%* 0P+ L-#3%0 L%,-" 5 +? &' B H #30 5 % 5#&-#3% 2 %&% % -0/' -&5 %. - 0' H 03#3'#" 5 + $%5 %? &' *+ 0( H +*+ + $3%* $+ &&-02 +" 5 -" 3- I 00#( O M ( 7 -G %5 -$#( %*. + 2 &+ $-00+ D #5 " 3#$+ I 4"#$% 5#L-&-" % D /' - -( ) -, 5 -? &' B H #30 ' 0%( 0-? &' J I 00#( >

30 ! $ + 5 -( + 0 %? + &% ) +*3%& %+ " $+ ( 2 ' 3%5 + & 5-3& 0 H #30 1 )#( + 0 /' - $+ ( 3& 0 H # ( + 0 &-2 &-0-" 3%& " 4 ( -&+ 0 5#L-&-" 3-0 %0 /' - " 4 ( -&+ 0 0P ( ( + 0 ) -& " % $+*' " % 5 % H %0- >. $+ ( %2 -" %0 B H #30 2 %&% &-2 &-0-" 3%& #" 3-#&+ 0 -( H #" 1&#+ " %3' &%*. %0 /' %" 3#5 %5-0 &-2 &-0-" 3%5 %0 $+ ( -%( -( - ) P+ %3D > M P+ + 0 *#( # ) %&#%P+. + ' %? %( % 5 - ) %*+ & ) -#0. 2 %&% #" 3-#&+ 0 0-( 0#" %* 5 - B H #30 + ( H #30 %? %( % 5 - ) %*+ &-0 0-&#% 5 - % > > O O M $+ ( n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

31 I 00#(. -( H + &% ' ( #" 3-#&+ $+ ( 0#" %*. &-2 &-0-" 3%5 + ' 0%" 5 + B H #30. 3-" 7 % %#" 5 % > ) %*+ & ) -# ' 0 *#( # ) %&#%P+ 0P+ > J - > B K - 3#) -&( + 0 H #30 -" 3P+ %? %( % 5 - ) %&#%P+ ) %# 5 - > > % > > + $%0+? -&%*. ' ( #" 3-#&+ ' 0%" 5 + n H#30 3-&1 > n ) %*+ &-0 5#L-&-" &1 %0 0-? '#" 3-0? %( %0 5 - ) %&#%P+ K -( 0#" %* % > + ( 0#" %* > % > $ < B < - <>>> < < < <>>> < < < <>>> / + +/ / / ;. :?> ;. < C D M 7 A; B 26 J92. 3> 0 30 ; < ; ,; código código caracter decimal binário # $ % & ' ( ) * ,

32 / A B C a b c /. 2/ < -. / M B / N Q N D > 3,26 ; 5 + ; ; 9+/ + E F / > C 5 / - 7 2; / M 5 3+ L B / >. / L B D < J / D ,D+B ,/ 0640 >! $ + ( + )#( + 0. % ( -0( % 0-/' " $#% 5 - H # &-2 &-0-" 3%& ) %*+ &-0 ( '#3+ 5#L-&-" 3-0. $+ " 0+ %" &%3-5 - #" 3-#&+ 0 $+ ( + ' 0-( 0#" %*. $%&%$3-&-0 + ' + ' 3&+ 0 =@ ; A =@

33 M 03% D %2 -" %0 ' ( % 5 %0 &%, -0 #" 3&+ 5 ',#&( + 0 % " +P+ 5-3# %5 + 0 ' 3&%0 &%, -0. 3%*) -, %3D ( %#0 #( 2 + &3%" &P+ %2 &-0-" 3%5 %0 ( %#0 3%&5 - N + 5 %0 %0 *#"? ' %? -" &+? &%( %P+ %$3' %#0 2 &+ 2 + &$#+ " %( 2 -*+ ( -" + 0 ' ( $+ "' " 3+ ( "#( + 5-3# % &D5 -L#" # %00#( $+ ( + % $%2 %$#5 %5-5 - $+ " 03&'#& " +) + 0 3# ' 3# L#" # *+ ' 3#*#,%5 + & %0 %L#" %* + /' - D ' ( 3# %5 + 0! ( 3# %5 + 0 D ' ( $+ "' " ) %*+ &-0 - ' ( % $+*-$P &% -0 0+H & ) %*+ &-0 3# %5 + 0 int $+ " 0# ? '#" 3- $+ "' " ) %*+ &-0... >. >..! N I.! N! + " 5 -! N I -! N! &-2 &-0-" 3%( + 0 *#( #3-0 0' 2 -&#+ & - #" L-&#+ & 5 %? %( % 5 - ) %&#%P #" 3-#&+ 0 I &% H &- + 0 int 0P+ ( '#3%0 - #" $*' -( &%5 + &-0 %&#3( D3#$+ 0 +, -, * e / #? ' %*5 % #? ' %*5 % &% %3&#H '#P+. -3$ ' %* D + ) %*+ & &-2 &-0-" 3% & > + ( + &-2 &-0-" 3%& O -( H #" 1&#+ " %3' &%* M -( + $3%* M -( 7 -G %5 -$#( %* B ' %* D + ) %*+ & &-2 &-0-" 3% & M 0- + " 4 ( -&+ -03#) -00- " % H %0- J I 0-/' " $#% H #" 1&#% $+ 5#L#$% ' ( #" 3-#&+ $+ ( 0#" %* ' - #" 3-#&+ &-2 &-0-" 3% O ' %* D + " 4 ( -&+ ( " #( H #30 " -$-001&#+ 2 %&%? ' %&5 %& ) %*+ &-0 5#L-&-" 3-0

34 W X Y Z[\ ]^ IV Primeiros programas O 8 9. ; 9+/ + 30 ; J ,26 ; 5 + ; 0/ ; 9+/ + EF. + + > public class PrimeiroPrograma { public static void main(string[] args) { System.out.print("Primeiro programa em Java."); < ; 9+/ ; F Primeiro programa em Java. + ( + D /' ( + 0 $+ " L#&( %& #00+ ( % 5 %0 L+ &( %0 ( %#0 0#( 2 *-0 $+ " 0#03- -( $+ 2 #%& + 2 &+?&%( % 2 %&% ' ( -5#3+ & 5-3-G 3+ -? &%) %& + L#$7 -#&+ $+ &&-02 +" 5 -" 3- $+ ( + " + ( - PrimeiroPrograma.java + & &%, -0 /' &" %&%( $*%&%0 ( %#0 L&-" 3-. D " -03% L%0- ( '#3+ #( 2 + &3%" 3- &-2 &+ 5 ',#& ; A A: ;8 ; + /' $&#3+ + & -G -( 2 *+. D 2 &+#H #5 + 3&+ $%& ( #" 4 0$'*%0 2 + & ( %#4 0$'*%0 - )#$-) -&0% > Q -2 +#0 3-&-( $+ ( 2 #*%& + 2 &+?&%( % ' 0%" $+ ( 2 #*%5 + & 5 - %) %. + javac %&% #00+. -G -$' 3%0- " % *#" 7 % 5 - $+ ( %" 5 + 0

35 >javac PrimeiroPrograma.java + ( + &-0'*3% $+ ( 2 #*%5 + &? -&%&1 + L#$7 -#&+ PrimeiroPrograma.class /' - $+ " 3D( $F 5#? + -G -$' 31) -* 2 -*% ( 1/'#" % ) #&3' %* 5 + %) % $F 5#? + -G -$' 31) -* L#$%&1? ' %&5 %5 + " + L#$7 -#&+ PrimeiroPrograma.class B #" %*( -" 3- -G -$' 3% &+?&%( %. $7 %( %" 5 + % ( 1/'#" % ) #&3' %* $+ ( + " + ( " L#$7 -#&+ L&-" 3-!03+ D. " % *#" 7 % 5 - $+ ( %" $&-) -0- >java PrimeiroPrograma <. 06 ; 06 T <. / C D ,2-+ > / C B 2, / D233F ,+9> + / 0 3/ + D. 9/ + < 6 5 / +,26 ; 5 + ; 0/ ; 9+/ + EF B < -. / < B 2, / + > / 8,. < + 3 D5 6 E 0 3 / +40/ J42-+ 3< -. /. + 3 D5 6 E ; 6. / C ,. ; +9A4/ 2-+ 3< 3F B 2, ,+ 330 > / Math 5 / D5 6 E 0 3< / 8, ,-5, N < < 0/ D5 6 E /. 3 6./ 0 3 T +B < -./. Math.sqrt(2).. 5 < ,. 9 +B 3.,5 4. < <,. ; +924/ < abs cos, log, log10 sin,. ; +924/. 7 0 B + 30 LK < / 6 I / 09. < / > 3 6 I / / B C/ / , F. 309 π e Math > PI 0 Math > E < / > / 409/. 3 ; < 5 / + -, /. 5 / / / / ; 9+/ / > E F , / + 6. E F , 0/ 9. ; 9+/ + EF B < 290/ < / +23 D90640 < D E F. >

36 < 6 F. C T / / 8, ; 9+/ + < 42 C 330/ D / + -, T +/ D. 330 PrimeiroPrograma J 0, / ; 0/ > 8 +, D public 7 + -,+ 330 > /. 7. < / J ,+ 330 > /. / 064. < F. public static void main(string[] args) D ; 9+/ ,> E F ; 9+/ + -. / 0 E + < / / > ,+ 9+ 3< + / J , , /. / 0 3/. 6. / 0 7. D2-T /. 3. main 8 9. ; 9+/ + > < EF / EF. 7 0 > main 3 -T < ,+/. 26 A D2/ / E 0 3> { 8 9. ; 9+/ / / 0E B + + -,+ 330 < + 332/ -. / / 0 E B ; 9+/ ,> 34J B 0/ C E F System.out.print("Primeiro programa em Java."); "Primeiro programa em Java." F > ; ; 9+/ + 0/ + + +/ ,+9+9< F 5 / + +92J 0, > public class SegundoPrograma { public static void main(string [] args) { int i=2; System.out.print("Programa No " + i + " em Java.");

37 -&#L#/' - + /' &+?&%( % -0$&-) - " + -$&P M 03-2 &+?&%( % 1 $+ ( -% % %2 &-0-" 3%& ' ( % -03&' 3' &% 32 #$% + 2 &+?&%( % 2 &#" $#2 %* $+ ( -%& 2 + & 5 -$*%&%& - #" #$#%& % ) %&#1) -* i. 0-? '#" #0 % #" 03&'P $&#3% Q % ( -0( % L+ &( % / ' - %0 + &% -0 -( + &3'?' 0 3-&( #" %( $+ ( ' ( 2 + " 3+ L#" %* %0 %0 #" 03&' -0 3-&( #" %( $+ ( 2 + " 3+ - ) &? '*% ; + & -03- ( + 3#) $%&1$3-& $7 %( %0- + $%&1$3-& 3-&( #" %5 + & 7 0 -,+9+ EF / + +92J 0, C D / / / / : int?< / J 0, : i?< 30 ; / : ;?. 5 5 / ,2 + EF. < -./ / 8,. > / J / B C/ 30 -T +/ +/ D > C -2 %&-0- %#" 5 % $+ ( &" % ) -* '" 3%& $%5 -#%0 5 - $%&%$3-&-0 - ) %*+ & ) %&#1) -#0 M ( %) % -G#03-( 3# &#( #3#) ' -*-( -" 3%& %5 + 0 byte. short. int. long. float. double. char - boolean. %&%? ' %&5 %&( + 0 #" 3-#&+ 0 3-( byte. short. int - long. -03%" 5 + % 5#L-&-" % " + " 4 ( -&+ 5 - H 3-0 5#02 + " ) -#0 2 %&% %&( %,-" %( -" 3+. >. J - H 3-0. &-02 -$3#) %( -" 3- %&%? ' %&5 %&( + 0 &-%#0. 3-( float - + double6 0-" 5 + 3%( H D( %/'# % 5#L-&-" % " + " 4 ( -&+ 5 - H 3-0 5#02 + " ) -#0 2 %&% $%5 % 3#2 + J - H 3-0. &-02 -$3#) %( -" 3-3#2 + char? ' %&5 % $%&%$3-& ( + 0 &-L-&#&" + 0 %+ $%&1$3-& a -0$&-) -" 5 + char c = a ;

38 #" %*( -" ( #2 + boolean /' -? ' %&5 % ) %*+ &-0 *F?#$+ 0. ;. true - false + ( + 0F /' -&-( + 0 5#03#"? '#& -" 3&- 5 +#0 ) %*+ & ) -#0. -" 3P+ %0 ) %&#1) -# #2 + boolean ' 0%( %2 -" %0 ' ( H #3 I 5 -$*%&%P+ 5 - ) %&#1) -#0 5 - /' %*/' -& ' ( #2 + 0 D L-#3% 0-( 2 &- $+ ( + #" 5#$%5 + " + 2 &+? &%( % %$#( % I 0 2 %*%) &%0 byte. short. int. long. float. double. char, boolean, true - false 0P %0 -*%0 2 %*%) &%0 &-0-&) %5 %0. ;. + 0-' 0#? " #L#$%5 + " P %*3-&%5 + + & -G -( 2 *+. " P &-( %& + " + ( - byte % ' ( % ) %&#1) -*6 #00+ 0-&#% %00#" %*%5 + $+ ( + ' ( -&& / /. 3 -./ 8,04+/ ; 6 2D / + +92J 0, 0/ 8 9. ; 9+/ + E F. 0 09/. 3 / ,; ,0/ / / 8 9. ; 9+/ / > public class Soma2int { public static void main(string[] args) { int a, b, s; a=7; b=18; s=a+b; System.out.print(a + " + " + b + " = " + s ); < ; 9+/ ; , D = 25 > 8 9. ; 9+/ , -. / 0 E , J int a, b, s;

39 . 7 0/ / + +92J 0, -./. 30 D / ; / +,. 9> , < J 0, E. 6 + / 0/ / < J ; ,. 90 3> J 0, 40/ 5 / >. /. 2/. 3< C / / 0/ J 0,> ,+9+EF J 0 23< ; 9+/ + 40/ R E F ,/ < 5 / > / E 0 3< J ; J E 0 3 C 5 / + s = a + b; E F. < + 5 2, J 6., , 7 0 2; 5 +, C 30/ / + +92J 0,> 5 2, J 7., , 7 0 2; 5 +, C 5 / F. > E F. <. -./ D J,-5, F. 7., : a + b? 0 -., , J 0,

40 J 6., : s?> ,+ 9+ 3< +492B J 0, s. +, a + b > E F B 5 2E F J 0 23 C I,42/ E F ; 9+/ + C 5 / E F < -. / J 2/ / 0640 > 8 9. ; 9+/ / + 3. / + N 6 I / > , / 6 I / ,< / 8,. < ; 9+/ + 6 F / / > 5 0 +,409+ E A+/ D ; 9+/ D / + N 6 I / ; 9+/ B +/ / + D. 940,2/ 24+ E F. > / / I / D / ;. + + < +, I / / 8 2, ; 9+/ + > EF. 6 F. C J 0,> , 09< 7 0 0/ , ; 9+/ , D. 9/ , , I / / +9> // Versão 2 da classe Soma2int import java.util.scanner; public class Soma2int { public static void main(string[] args) { int a, b, s; Scanner sc = new Scanner(System.in); System.out.print( Primeiro operando: ); a=sc.nextint(); System.out.print( Segundo operando: ); b=sc.nextint(); s=a+b; System.out.print(a + " + " + b + " = " + s );

41 I L' " P+ sc.nextint() -02 -&% %3D /' - + ' 3#*#,%5 + & -0$&-) % ' ( #" 3-#&+ ' 0%" $*%5 + I 2 F 0 + ' 3#*#,%5 + & $%&&-? %& " % 3-$*% <enter>. % L' " P+ &-3+ &" % + ) %*+ & #" 3-#&+ *#5 + 0 &-03%" 3-0 3# % P+ *#5 + 0 &-$+ &&-" 5 + % L' " -0 0-( -*7 %" 3-0 Q -L#" % - #" #$#%*#,- % ) %&#1) -* v. 5 - L+ &( % % / ' ' $+ " % &-2 &-0-" 3% & 6 > M 0$&-) % ' ( 2 &+?&%( % / ' - $%*$'*- % 1&-% 5 - ' ( $#&$'*+ I r 6 0-" 5 + r + &%#+ B M 0$&-) % ' ( 2 &+?&%( % / ' -. % 2 %&3#& " 4 ( -& &-2 &-0-" 3%" &%0 - ( #" ' &-02 -$3#) %( -" 3-. $%*$'*- + " 4 ( -&+ 5 - ( #" ' %00% %0 7 + &%0 J M 0$&-) % ' ( 2 &+?&%( % / ' - $+ " ) -&3%? &%' 0 -" 3#? &% (? &%' 0 %7 &-" 7 -#3. O B> O M 0$&-) % ' ( 2 &+?&%( % / ' - $%*$'* &( -3&+ 5 - ' ( &-$3 "? '*+ 5 - $+ ( 2 &#( -" 3+ $ - *%&? ' &% * ( % + ' 3&% " +)#5 %5 - /' - + 4*3#( + 2 &+?&%( % / ' " ) +*) -( + 0 %2 &-0-" 3% D + $+ ( -" 31&#+ #" #$#%* // Versão 2 da classe Soma2int ( $+ ( -" 31&#+ D ' ( % #" 5#$%P+ 2 %&% + 2 &+?&%( %5 + & 0 $+ ( -" 31&#+ 0 0P+ *#3-&%*( -" 3- #? " + &% *+ $+ ( 2 #*%5 + &. ;. " P+ 3 ( /' %*/' -& #" L*' " $#% " % -G -$'P &+?&%( % %&% /' - 0-&) -( -" 3P+ + 0 $+ ( -" 31&#+ 0 %&% %' 5 %& + 2 &+?&%( %5 + & % *-( H &%&0- % 0#. - /' -( ( %#0 3#) -& / ' - *-& + 0-' $F 5#? %02 -$3+ 0 #( 2 + &3%" 3-0 3%#0 $+ ( +. + %' 3+ & 5 + $F 5#? ' $+" 3%$3+. % ) -&0P+ %$3' %* % &+?&%( % " ' ( 5-3-&( #" %5 + ( + ( -" 3+ + ' %#" 5 % 5 %0 &%, -0 /' - + *-) %&%( % 3+ ( %& ' ( % 5 %5 % + 2 P+ Q " )#03% + 0 $+ ( -" 31&#+ 0 0P+ ' ( % L-&&%( -" 3% ( '#3+ #( 2 + &3%" 3-2 %&% ( -*7 + &%& % ; A ; 5 + $F 5#? +. ;. 2 %&% %' ( -" 3%& % " + 00% $%2 %$#5 %5-5 - $+ ( 2 &--" 5 -& + $F 5#? /' - D

42 $+ ( 2 *-3%( -" " -$-001&#+ %5#$#+ " %& $+ ( -" 31&# H &- % 2 &F 2 &#% *#"? ' %? -( 5-2 &+?&%( %P+ M 03-3# #" L+ &( %P #02 +") -* % ( ) 1&#+ 0 03#+ 0. #" $*'#" 5 + " + 0 ( %" ' %#0 5 % *#"? ' %? -( - " + 2 &F 2 &#+ %( H #-" " ) +*)#( -" 3+ + $+ ( -" 31&#+ %$#( %. + $+ ( 2 #*%5 + & #? " + &% 3' 5 + /' %" % 5#&-#3% $%&%$3-&-0 // ' 3&+ -G -( 2 *+ + " # $+ ( -" 31&# & ( '#3+ 4 3#* y = x * x +1; z = Math.sqrt(y); // Note-se que y é sempre maior do que 0 C -*-( H &%0- /' - % L' " P+ Math.sqrt(y) &-3+ &" % ' ( double $+ ( % &%#, /' %5 &%5 % 5 - y - /' - % &%#, /' %5 &%5 % 0F L#" #5 % 2 %&% + 0 " 4 ( -&+ 0 " P+ " -? %3#) + 0 K - " P+ 3#) D00-( + 0 % $-&3-,% 5 - /' - y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ersão obsoleta da classe Soma2int public class Soma2int { public static void main(string[] args) { int a, b, s; a=1; b=2; s=a+b; System.out.print(a + " + " + b + " = " + s ); */ P ( + 0 D 3-& $+ ( -" 31&# H*+ $+ 5 -" 3&+ 5 - $+ ( -" 31&#+ 5 - H *+ $+ %&% %*D( > 3# $+ ( -" 31&#+ 0 + %) % 5#02 - %#" 5 % $+ ( -" 31&# $' ( -" 3%P+ 5 - /' - L%*%&-( + 0 ( %#0 L&-" 3-

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long total_numeros_telefone; long totalnumerostelefone; + /' ? ' - % %&-( + 0 % 0-? '#" 3- $+ " ) -" P+ + 0 " + ( -0 5 %0 ) %&#1) -#0 $+ ( -%( 2 + & ( #" 4 0$'*% " +( -0 5 %0 $*%00-0 $+ ( -%( 2 + & ( %#4 0$'*%0 > $F 5#? + 5 -) - -03%& #" 5 -" 3%5 + + ' ' 03#L#$% %* L+ &( % / ' - 0-% #( -5#%3+ 2 %&% + *-#3+ & #5 -" 3#L#$%& + #" $#+ - + L#( 5 - $%5 % ' ( H *+ $ $F 5#? G -( 2 *+ 0 %2 &-0-" 3%5 + 0 %3D %/'#. 3#) -( + 0 % 2 &-+ $' 2 %P+ 5-0-? '#& -03%0 &-? &%0 M 0- " P+ %0 3#) D00-( ? '# &+?&%( %0 " P+ L' " $#+ " %&#%(

44 ' " $#+ " %) %(. ( %0 % 0' % $+ ( 2 &--" 0P+ 0-&#% $-&3%( -" 3- ( %#0 5#L$#*. 0-" P+ ) -%( + 0 /* Versão 2 da classe Som2int escrita sem qualquer tipo de preocupação com legibilidade*/ public class Soma2int {public static void main(string[]args) {int a, b, s; Scanner sc = new Scanner(System.in); System.out.print( Primeiro operando: ); a=sc.nextint(); System.out.print( Segundo operando: ); b=sc.nextint(); s=a+b; System.out.print(a + " + " + b + " = " + s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a + b D ' ( % -G 2 &-00P+ %&#3( D3#$% -" ) +*) -" &%5 + & %&#3( D3#$+ 0+ ( % &%5 + &-0 %&#3( D3#$+ 0 5#02 + " ) -#0 -( %) % 0P+ ;<A =<;@ 8 A = ;: = A< : =@ +, -, *, /, % 2 -&% -0 %&#3( D3#$%0 ' 0' %#0. 0-" 5 + % &%5 + & ( F 5 '*+ /' - &-3+ &" % + & % 5#) #0P+ #" 3-#&% ' &%" a, --a!" $&-( -" $&-( -" 3+ 2 &-L#G + ) %*+ & 5 % ) %&#1) -* a D #" $&-( -" 3%5 + + ' 5 -$&-( -" 3% F 5-2 +#0 D /' - D 5 -) +*)#5 + a++, a--!" $&-( -" $&-( -" 3+ 0' L#G + ) %*+ & 5 % ) %&#1) -* a D 5 -) +*) # F int i = 5 % 2; // i vale 1 int i, a=0; i = ++a; // i vale 1, a vale 1 int i, a=0; i = a--; // i vale 0, a vale -1

45 5-2 +#0 D #" $&-( -" 3%5 + + ' 5 -$&-( -" 3%5 + -&3%0 *#"? ' %? -" 0 $+ ( %) % 5#02 + " #H#*#,%( + 0 $7 %( % &%5 + & %' 3+%3&#H '#P+ M &%5 + &-0 0P+ $+ " ) -" #-" & /' - 2 -&( #3-( ' ( % -0$&#3% $+ " $#0% 5 - #" 03&' %3&#H '#P+ + & -G -( 2 *+. % #" 03&'P+ a = a * 3; & -0$&#3% %H &-)#%5 %( -" 3- $+ ( + a *= 3; 2 &#( -#&% )#03%. %0 ) %" 3%? -" 0 2 %&-$-( " P+ 0-& ( '#3%0. ( %0 0P+ Q *+? +. % #" 03&'P+ %H &-)#%5 % D ( %#0 -L#$#-" /' - % + ' 3&% Q -2 +#0 % L+ &( % %H &-) #%5 %. 2 + &/' - ( %#0 0#( 2 * &" %0- ( %#0 *-? ) -* " + 0 $%0+ 0 " P+ 3&#) #%#0 ' 3& &%5 + & %' 3+%3&#H '#P+ 5#02 + " ) -#0 0P+ +=, -=, *=, /=, %= $'+ 0#? " #L#$%5 + D -)#5 -" 3- %) % %3&#H '# 2 &#+ &#5 %5-0 + ' 2 &-$-5 " $#%0 %+ 0 ) 1&# &%5 + & L+ &( % % /' - + &-0'*3%5 + 5 % %) %*#%P+ 5 - ' ( % -G 2 &-00P+ %) % 0-% #? ' %* %+ &-0'*3%5 + 5 % %) %*#%P+ 5 % -G2 &-00P+ ( %3-( 13#$% $+ &&-02 + " 5 -" 3- I 00#( x = * 3; %3&#H '# % x + ) %*+ & 7. 3%* $+ ( + 0-&#% &%&. 1 /' - -( ( %3-( 13#$% L%,-( 0-2 &#( -#&+ %0 ( '*3#2 *#$% -0-5#) # F 5-2 +#0 %0 0+ ( %0-0' H 3&%$ -0 N %( H D(. 3%* $+ ( -( %3-( 13#$% ( + 0 ' 0%& 2 %& " 3-0#0 $' &) %&% %*3-&%& 2 &#+ &#5 %5-0 - " ' ( % -G2 &-00P+ $+ ( ) 1&# &%5 + &-0 %&#3( D3#$ $+ ( % ( -0( % 2 &#+ &#5 %5 -. %) %*#%0- % -G 2 &-00P+ 5 % -0/' -&5 % 2 %&% % 5#&-#3%

46 I 0 -G2 &-00-0 *F?#$%0 0P+ $+" 03#3' 5 %0 2 + & + 2 -&%5 + &-0 *F?#$+ 0 + ' 2 + & +2 -&%5 + &-0 &-*%$#+ " %#0. &-0'*3%5 + 5 % %) %*#%P+ 5 - ' ( % -G 2 &-00P+ *F?#$% D true + ' false. ;. ' ( ) %*+ & H + +*-%" + ;<A =<;@ =@ &, && 8 A = ;: = + "' " P+ + ' -*F?#$+ I ( H &%5 + &-0 &-3+ &" %( true F 0- %( H &%" L+ &-( 3 rue6 &-3+ &" %( false $%0+ $+ " 3&1&# &%5 + & & %) %*#% 0-( 2 &- %( H &%" &%5 + & && 0F %) %*#% + 0-? ' " &%" " -$-001&#+. ; &#( -#&+ +2 -&%" 5 + L+ & true, Q #0' " P+ + ' + '*F?#$+ I ( H &%5 + &-0 &-3+ &" %( false 0-0F 0- %( H &%" 5 + L+ &-( false6 &-3+ &" % true $%0+ $+ " 3&1&# &%5 + & 0F %) %*#% + 0-? ' " &%" " -$-001&#+. ; &%" /' -&5 + L+ & false boolean a = true, b = false, c; c = a && b; // c vale false boolean a = true, b = false, c; c = a b; // c vale true ^ '-G $*' 0#) + C -3+ &" % 3&' F ' 0 %&? ' ( -" #) -&-( ) %*+ &-0 c; *F?#$+ 0 5#L-&-" 3-06 C -3+ &" % L%*0- $%0+ $+ " 3&1&#+! -? %P+ 2 -&%5 + & ' " 1&#+ I boolean a= true, c; " -? %P+ 5 - L%*0- D 3&' - - % " -? %P+ c =!a; // c vale false 5-3&' - D L%*0- boolean a = true, b = true, c = a ^ b; // c vale false ;<A =<;@ <; A < 8 A = ;: = -" + & C -3+ &" % true F 0- + int i = 0;

47 <= > >= + 2 -&%" /' -&5 + L+ & ( -" + & 5 + float f = 1.0f; /' &%" 5 + 5#&-#3+ 6 &-3+ &" % false $%0+ $+ " 3&1&#+ vale true -" + & + ' #? ' %* C -3+ &" % true F int i = 1; &%" /' -&5 + L+ & ( -" + & + ' #? ' %* % &%" 5 + 5#&-#3+ 6 &-3+ &" % false $%0+ $+ " 3&1&#+ vale false %#+ & C -3+ &" % true F 0- + short s = 10; + 2 -&%" /' -&5 + L+ & ( %#+ & 5 + /' - int i = 1; + 2 -&%" 5 + 5#&-#3+ 6 &-3+ &" % false $%0+ $+ " 3&1&#+ vale true %#+ & + ' #? ' %* C -3+ &" % true F short s = 10; &%" /' -&5 + L+ & ( %#+ & int i = 10; + ' #? ' %* % &%" 5 + 5#&-#3+ 6 &-3+ &" % false $%0+ $+ " 3&1&#+ ==!? ' %* P+ $+ " L' " 5#& $+ ( &%5 + & %3&#H '#P+ = C -3+ &" % true F 0- %( H &%" L+ &-( #? ' %#06 &-3+ &" % false. $%0+ $+ " 3&1&#+!= Q #L-&-" 3- C -3+ &" % true F 0- %( H &%" L+ &-( 5#L-&-" 3-06 &-3+ &" % false. $%0+ $+ " 3&1&#+ boolean b = (i < f); // b double d = 0.0; boolean b = (i <= d); // b boolean b = (s > i); // b boolean b = (s <= i); // b vale true short s = 0x10; int i = 16; boolean b = (s = i); // b vale true int i = 1; float f = 1.0f; boolean b = (i!= f); // b vale false ' %#0 0P+ + 0 &-0'*3%5 + 0 ( + 03&% *%0 0-? '#" 3-0 #" 03&' -0 a) int x; i) x = -3+4*5 6; System.out.println(x); ii) x = -3 *4 % 6; System.out.println(x); iii) x = (7 + 6) % 5 / 2; System.out.println(x);

48 b) int x = 2, y, z; i) x *= 3 + 2; System.out.println(x); ii) x *= y = z = 4; System.out.println(x); iii) x = y == z; System.out.println(x); > Q %5 %0 %0 0-? '#" 3-0 %3&#H '# -0 byte umbyte = 10; boolean a=false, b=false; %*$'*- + ) %*+ & 5 %0 0-? '#" 3-0 -G 2 &-00-0 *F?#$%0 a) (umbyte > 10) &&!a b) (!a^b) && (a!b) c)!(a b) == (!a &&!b) B M 0$&-) % ' ( % -G2 &-00P+ /' - 2 -&( #3% ) -&#L#$%& 0- + ) %*+ & 5 % ) %&#1) -* x D 2 + 0#3#) + ( %0 ( -" + & 5 + J M 0$&-) % ' ( % -G2 &-00P+ /' - 2 -&( #3% ) -&#L#$%& 0- ' ( 5 %5 + #" 3-#&+ D 2 %& + ' #( 2 %&

49 W X Y Z[\ ]^ V. /. 2/. 3< B.97 +/ ,5 E F B,0/ C / < 30,0 -E E 0 3 3F. 35 D D , ,;. 924/. > / 8 9. ; 9+/ + 5 / E F / +,;. 924/ / +,26 ; 5 + ; 0/ ; 9+/ + E F. < C ,26 ; 5 + ; 0/ ; 9+/ + EF. 8 09/ E F ,. > 3,26 ; 5 + ; ; 9+/ + E F. 2/ < 30 +/ B < / D+ -2, > 332/ 309J 8. 33A 0, ,+9. D, E F ; 9+/ / < 30,0 -E E 0 3> T +/ + 30 D, E F / 8 9. ; 9+/ ,+ 5 +, E 0 3 3F > 4C + 5 2< 2/ / 8, ; 9+/ / 5 / D, E F ,< < E 0 3 3F / ; < 8 0, / / ; 9+/ + > 0 4. / +9/ /. 01 0/ 8, ; 9+/ ,-5,+ + J A9-5,. < / A // Programa para cálculo da área A, de um círculo de raio r: A = pi * r *r // versão 1

50 import java.util.*; public class AreaCirculo { public static void main (String [] args) { float raio; double area; Scanner sc = new Scanner(System.in); System.out.print( Escreva o valor do raio: ); raio = sc.nextfloat(); area = Math.PI * raio * raio; System.out.print( Área do circulo de raio +raio+ é + area); 092D2- +/ ; 9+/ + C ; D. 9/ + Q -$*%&% % ) %&#1) -* raio6 > Q -$*%&% % ) %&#1) -* area6 B M 0$&-) - " + -$&P M 0$&-) % + ) %*+ & 5 + &%#+ 6 J I 3&#H '# ) %&#1) -* &%#+ + ) %*+ & -" 3&% *+ ' 3#*#,%5 + &6 O %*$'*% % 1&-% 5 + $ &$'*+ - %3&#H '#% ) %&#1) -* area6 M 0$&-) % " + -$&P. + ) %*+ & $%*$'*%5 + 6 N -&( #" % % -G -$'P+ + /' ? ' ' 5 %&-( + 0 %0-03&' 3' &% $+ " 3&+*+ /' - 2 -&( #3-( %*3-&%& % -G -$'P+ 2 ' &%( -" 3-0-/' -" $#%* M 03%0-03&' 3' &%0 ) P+ 2 -&( #3#&" + 0-0$&-) -& 2 &+?&%( %0 ) -&5 %5 -#&%( -" 3- #" 3-&-00%" 3-0 if I 0 #" 03&' *-$P+ 0P+ 5 %0-03&' 3' &% 0 ( %#0 ' 3#*#,%5 %0 " + $+" 3&+*+ 5 + L*' G &+?&%( % I ( %#0 0#( 2 * %0 #" 03&' -0 3-( % 0-? '#" 3-0#" 3%G - + %" -G + I ( + 0 ) -& + /' - D % 0#" 3%G ' ( % *#"? ' %? -( - $+ ( + % ( $&-) -& if (expressão_lógica ) instrução + " 5 - expressão_lógica &-2 &-0-" 3% ' ( % -G 2 &-00P+ *F?#$% - instrução &-2 &-0-" 3% ' ( % #" 03&'P+ /' &1 0-& 0#( 2 *-0 + ' $+( % ( % #" 03&'P+ $+ ( % " P+ D ( %#0 5 + /' - ' ( H *+ $+ 5 - #" 03&' -0 0#( 2 *-0 H*+ $+ $+ ( -% 2 + & { - %$%H %