1446t - Tp1 - r0 - Imam Prawiranagara

7/21/2019 1446t - Tp1 - r0 - Imam Prawiranagara

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Review Questions:1. What is the Java source filename extension, and what is the Java bytecode filename

extension?

2. Is Java case sensitive? Give an example to prove your answer.

. !re they any performance differences between the followin" two import statements?

a. Import #ava.util.$canner%

b. Import #ava.util.&%

'. (sin" the Pseudo-code and flowchart, create)

a. an al"orithm to calculate a trian"le area*

b. an al"orithm to chan"e second into hour and minute unit*

c. an al"orithm to accept three numbers and find max, min, and avera"e number*

+. escribe and "ive example for each method of $trin"

a. contains

b. concat

c. compare-o

d. format

e. char!t

f. replace

". substrin"

h. trim

i. tohar!rray

#. split

/. to0owerase

l. to(pperase

Programming Exercise:

uatlah sebuah pro"ram untu/ mempela#ari tipe data dalam pemro"raman Java,

den"an men""una/an beberapa /etentuan seperti ini)

1. ada awal pro"ram, user a/an diminta untu/)

3emasu//an tipe data oolean, user diminta untu/ memasu//an 4true5 atau

4false5

3emasu//an tipe data int, user diminta untu/ memasu//an bilan"an bulat

3emasu//an tipe data ouble, user diminta untu/ memasu//an bilan"an decimal



3emasu//an tipe data $trin", user diminta untu/ memasu//an /ata atau /alimat

2. 6emudian semua hasil yan" dimasu//an user, a/an ditampil/an pada a/hir pro"ram.

ilakan !alankan E"E file untuk melihat sam#le #rogram$

Print creen dari Program ketika Meminta %n#utan dengan Ti#e &ata 'oolean

Print creen dari Program ketika Meminta %n#utan dengan Ti#e &ata %nt

Print creen dari Program ketika Meminta %n#utan dengan Ti#e &ata &ou(le



Print creen dari Program ketika Meminta %n#utan dengan Ti#e &ata tring

Print creen dari )asil



Jawaban

1. Java source files extension dia/hiri den"an .java . $edan"/an #ava bytecode dia/hiri

den"an .class.

2. Import #ava.util.$canner% adalah perintah dari user /e pro"ram Java untu/ men"ambil

atau men"import (tility lass pada scanner sa#a sedan"/an import #ava.util.&% adalah

perintah user /e pro"ram #ava untu/ men"import semua class yan" ada dalam class

utility.

. !. 0uas $e"iti"a)

PE*&+,+&E:

ro"ram men"hitun" luas se"iti"a77input ) alas, tin""i, bilan"an bulat

77output) luas, bilan"an decimal

.M*:

!las) Inte"er

-in""i) Inte"er

0uas ) double

./0+R%TM.:

$-!8-89!:4tin""i5;

89!:4alas5;

0(!$ $9GI-IG! <=== :alas&tin""i; 7 2%W8I-9 :4luas se"iti"a adalah) 5;9>



/+,).RT:



. 6onversi eti/ /e Jam, 3enit

PE*&+,+&E

ro"ram men"ubah deti/ men#adi #am, menit, deti/.77input ) inputan, bilan"an bulat non ne"atif

77output ) #am, menit, deti/ bilan"an bulat non ne"ative

.M*

Inputan ) inte"er

Jam ) byte3enit ) byte

eti/ ) byte

./0+R%TM.

$-!8-

89! :inputan;

Jam <=== inputan I @AA

3enit <=== :inputan B :#am & @AA;; I@Aeti/ <=== :inputan = :#am &@AA;; 3C @A

W8I-9 <=== :#am, menit, deti/;9>

/+,).RT



. mencari max, min, dan avera"e dari nilai inputan

PE*&+,+&E

ro"ram mencari max, min dan avera"e dari nilai inputan

77input) bil1, bil2, bil, bilan"an bulat

77output) min, max, bilan"an bulat% avera"e, bilan"an decimal

.M*

bil1, bil2, bil ) Inte"er min,max ) Inte"er

!vera"e )double

./0+R%TM.

$-!8-

89! :bil1,bil2,bil;

ID bil1Ebil2, bil1Ebil -F9>

W8I-9:bil 1 3!;90$9 ID bil2Ebil1, bil2Ebil -F9>

W8I-9:bil2 3!;90$9

W8I-9 :bil 3!;

9>ID!vera"e <=== :bil1Hbil2Hbil; 7

W8I-9 :!vera"e;

9>



/+,).RT



a. contains )It chec/s whether the strin" contains the specified seuence of char

values. If yes then it returns true else false. It throws >ullointer9xception of sK is null.

b. concat ) oncatenates the specified strin" 4str5 at the end of the strin".



c. compare-o ) -his method compares the two strin"s based on the (nicode value of

each character in the strin"s.

d. format ) method allows you to create a formatted strin" that you can reuse, as

opposed to a one=time print statement



e. char!t ) 8eturns the character at the specified index.

f. replace ) 8eturns a new strin" resultin" from replacin" all occurrences of

oldhar in this strin" with newhar.



". substrin" ) 8eturns a new strin" that is a substrin" of this strin".

h. trim ) 8eturns a copy of the strin", with leadin" and trailin" whitespace

omitted.



/. to0owerase ) onverts all of the characters in this $trin" to lower case usin" the rules

of the default locale.

l. to(pperase ) onverts all of the characters in this $trin" to upper case usin" the rules

of the default locale.



PR+0R.MM%30 E"ER,%E E,T%+3:

,+&E:

import java.util.Scanner;

public class LearnDataType

{ static boolean bool;static int bilanganBulat;static double bilanganDecimal;static String kalimat;static Scanner L;

public static void main(String[ args!{L " ne# Scanner(System.in!;

System.out.println($Learn Data Type$!;System.out.println($Let%s Learn Data Type$!;System.out.println($in %java% t&ere are some primitive data types '$!;System.out.println($boolean byte c&ar s&ort int long )loat double$!;System.out.println($and t&ere is an abstract data type String$!;

System.out.println($no# #e #ill learn boolean int double and string datatypes$!;

System.out.println($*. Boolean data types &ave + values #&ic& is true,)alse$!;System.out.print($-o# try to entering a boolea data type e/ample true,)alse0"$!;bool " L.ne/tBoolean(!;System.out.println($+. 1nt data type &as a value o) integer #it& range

2+*34356735 to 8+*34356734$!;System.out.print($-o# try to entering a int data type don%t use decimal e/ample

*990 " $!;bilanganBulat " L.ne/t1nt(!;System.out.println($6. Double data type &as a value o) decimal #it& range *.4e2695

to *.3e8965$!;System.out.print($-o# try to entering a double data type decimal number e/ample

*9.30 " $!;bilanganDecimal " L.ne/tDouble(!;,,some problem )i/ t&at i cant e/plain #&y it skipped a)ter entering int or double

values,,need some e/planation #it& ms.cuk t&o in class )orum t&enL.ne/tLine(!;System.out.println($3. String data type &as a value in t&e )orm o) a combination

o) c&aracters$!;System.out.print($-o# try to entering a String data type a #ord,sentence space

allo#ed00 " $!;kalimat " L.ne/tLine(!;

System.out.println($T&en Let%s try to print t&e result$!;System.out.println($*. Boolean data type t&at you entered " $8bool!;System.out.println($+. 1nt data type t&at you entered " $8bilanganBulat!;

System.out.println($6. Double data type t&at you entered " $8bilanganDecimal!;System.out.println($3. String data type t&at you entered " $8kalimat!;

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1446t - Tp1 - r0 - Imam Prawiranagara

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