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 Java Java Tutotrial for [NLP-AI] Tutotrial for [NLP-AI]

22 

ashishfa@cse.iitb.ac.inashishfa@cse.iitb.ac.in

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Last AssignmentLast Assignment

?? Print the details in tabular formatPrint the details in tabular format

- use tabs- use tabs \t\t

!stem.out."rintln#!stem.out."rintln#$$%%$&an 'e "rint ($&an 'e "rint (%%%( 'ith%( 'ith

!stem.out."rintln#) statement*!stem.out."rintln#) statement*%%$$$$ )+)+

asgn,asgn

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toring datatoring data

In Java /ata can be stored asIn Java /ata can be stored as NumbersNumbers

0.01 2.223 0.01 2.223 &haracters&haracters

44c5 4"5 4*5 45c5 4"5 4*5 45

tringstrings

66data7 68indi language7 69337data7 68indi language7 69337

6'''.redi:.com76'''.redi:.com7

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ProgramProgram

;; this "rogram 'ill declare and "rint a number;; this "rogram 'ill declare and "rint a number

class intclass int

+

!stem.out."rintln#$!our 'eight is $ ? 'eight)+!stem.out."rintln#$!our 'eight is $ ? 'eight)+

 

;;end of "rogram;;end of "rogram

int,

int

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&omments#double slash)&omments#double slash)

Not eecutedNot eecuted Bor documentationBor documentation

&an be "laced on an! line&an be "laced on an! line An!thing 'ritten afterAn!thing 'ritten after ;;;; is not eecutedis not eecuted C.g.C.g.

;; this is a comment;; this is a comment

Dsed to e"lain;describe 'hat is done inDsed to e"lain;describe 'hat is done inthe "rogramthe "rogram

Eood "racticeEood "ractice

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 T!"es of numbers T!"es of numbers

intint 

Fhole numbers liGe 2 H1H -H etc.Fhole numbers liGe 2 H1H -H etc.

doubledouble

Numbers 'ith decimal "ointNumbers 'ith decimal "oint

liGe ,.H . 2.222222liGe ,.H . 2.222222

Koat,

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 ariable declarationariable declaration Mefore using an! name it must be declaredMefore using an! name it must be declared

#'ith its t!"e i.e int or double).#'ith its t!"e i.e int or double).

Needed onl! once in one "rogramNeeded onl! once in one "rogram

Eenerall! done initiall!Eenerall! done initiall! !nta!nta

datatype name;datatype name;

doubledouble total+total+ ;; stores the total value;; stores the total value

intint inde+inde+

intint ab c sum interest+ab c sum interest+

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AssignmentAssignment

intint a+ ;;declaration needed oncea+ ;;declaration needed once

a = ,2 + ;; assignment O declared abovea = ,2 + ;; assignment O declared above

 intint a = ,2+ ;; assignment and declaration togethera = ,2+ ;; assignment and declaration together

,2 = a +,2 = a + ;; not "ossible com"ilation error;; not "ossible com"ilation error

Left hand side is al'a!s a variable for assignmentLeft hand side is al'a!s a variable for assignment

intintH

aStorage area

,2

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AssignmentOAssignmentO

intint a b +a b +

a = +a = +

b = 1+b = 1+

a = b+a = b+

b = a+b = a+a = H+a = H+

int

 ;; a =* b = *;; a =* b = *

;; a = b = *;; a = b = *

 ;; a = b = 1;; a = b = 1

 ;; a = 1 b = 1;; a = 1 b = 1

 ;; a = 1 b = 1;; a = 1 b = 1 ;; a = H b = 1;; a = H b = 1

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&haracter data&haracter data

&haracters&haracters

44a5 4A5 4c5 4*5 45 a5 4A5 4c5 4*5 45 4 54 5

#last is the single s"ace)#last is the single s"ace)

Cnclosed in single uotesCnclosed in single uotes

&haracter variable declaration&haracter variable declaration

charchar ch+ch+ &haracter assignment&haracter assignment

ch = 4G5+ch = 4G5+

char,

char

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tring datatring data

trings are seuence oftrings are seuence of char char acters enclosed in double uotesacters enclosed in double uotes /eclaration/eclaration

tringtring name+name+

tringtring address+address+

tringtring line+line+ AssignmentAssignment

name = 6ram7+name = 6ram7+

line = 6this is a line 'ith s"aces7+line = 6this is a line 'ith s"aces7+

name = 6a7+ ;; single character can be storedname = 6a7+ ;; single character can be stored

name = 67+ ;; em"t! stringname = 67+ ;; em"t! string

 The seuence of characters enclosed in double uotes "rinted in The seuence of characters enclosed in double uotes "rinted in"rintln#) are also strings."rintln#) are also strings. C.g.C.g. !stem.out."rintln#!stem.out."rintln# 6Felcome Q 66Felcome Q 6 )+)+

string,stringstring

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Practice "roblemPractice "roblem  Tr! to "rint these t'o Rgures on the screen using "rintln and least Tr! to "rint these t'o Rgures on the screen using "rintln and least

number of stringsnumber of strings

  **************

  **********

  ******

  **  ******

  **********

 **************

********************

* ** ** ** *

* ** *

********************

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Thank youThank you