PoojaMoolya at 06:40, 28 February 2017

2017-02-28T06:40:20Z

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Jyotisolanki at 14:24, 21 February 2017

2017-02-21T14:24:55Z

Pratik kamble at 07:25, 23 June 2014

2014-06-23T07:25:04Z

Krupali at 11:00, 29 August 2013

2013-08-29T11:00:55Z

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Krupali at 07:04, 29 August 2013

2013-08-29T07:04:29Z

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Krupali: Created page with ' {| border=1 || ''Time''' || '''Narration''' |- | 00:03 | Welcome to the Spoken Tutorial on '''constructor overloading''' in''' java'''. |- | 00:08 | In this tutorial we …'

2013-08-29T05:17:36Z

Created page with ' {| border=1 || ''Time''' || '''Narration''' |- | 00:03 | Welcome to the Spoken Tutorial on '''constructor overloading''' in''' java'''. |- | 00:08 | In this tutorial we …'

New page

{| border=1
|| ''Time'''
|| '''Narration'''

|-
| 00:03
| Welcome to the Spoken Tutorial on '''constructor overloading''' in''' java'''.

|-
| 00:08
| In this tutorial we will learn

|-
| 00:10
| what is '''constructor overloading'''

|-
| 00:13
| And to overload '''constructor'''

|-
| 00:16
| Here we are using

* Ubuntu version 11.10 OS
* Java Development kit 1.6
* Eclipse 3.7.0

|-
| 00:27
| To follow this tutorial you must know

|-
| 00:30
| how to create '''constructors''' in '''java''' using '''eclipse'''.

|-
| 00:34
| If not, for relevant tutorials please visit our website which is as shown,

('''http'''://'''www.spoken'''-'''tutorial.org''')
|-
| 00:40
| What is constructor overloading?
|-
| 00:43
| Define multiple '''constructors''' for a class.
|-
| 00:46
| They must differ in number or types of parameters.

|-
| 00:50
| Let us now see how to overload '''constructor'''.

|-
| 00:54
| In '''eclipse''', I have a class '''Student''' with two variables and a method.

|-
| 01:03
| Let us first create a '''parameterized constructor.'''

|-
| 01:07
| So type, '''''Student '''within''' '''parentheses''' int number '''comma''' String the_name.'''''

|-
| 01:26
| ''Within''' '''curly''' '''brackets''', type roll_number '''is''' '''equal''' '''to''' number.'''''

|-
| 01:38
| And''''' name '''is equal to '''the_name'''''

|-
| 01:46
| So we have a '''constructor''' with two parameters.

|-
| 01:51
| let us call this '''constructor'''.

|-
| 01:53
| So in '''name method''' type '''''new Student '''parentheses semi colon''

|-
| 02:03
| We see an error, it states that '''constructor''' '''Student''' is undefined.

|-
| 02:10
| This is simply because we have defined a '''constructor''' with two parameters.

|-
| 02:16
| And we are calling a '''constructor''' without parameters.

|-
| 02:22
| So we need to pass '''arguments'''.

|-
| 02:25
| So within parentheses type '''''22''''' ''comma'' ''in double quotes'' '''''Ram'''''.

|-
| 02:33
| We see that the error is resolved.

|-
| 02:36
| Let us call the method.

|-
| 02:38
| So before '''new '''type''' Student s '''''is equal to''' new student'''.
|-
| 02:45
| Now using the object '''s''' recall the method ''' studentDetail()'''

|-
| 02:53
| '''Save''' the program and '''Run'''.

|-
| 02:58
| We see the output '''22''' and '''Ram.'''

|-
|03:03
| Now''''' '''''let us define a''''' ''' constructor''' with no parameter.

|-
| 03:07
| So type, '''''Student '''parentheses.''

|-
| 03:12
| ''Within''' '''curly''' '''brackets''' roll_number '''is equal to''' 0.'''''

|-
| 03:21
| And''''' name '''is''' '''equal''' '''to''' '''in''' '''double''' '''quotes''' '''hypen'' that is no name

|-
| 03:30
| So now we can call the '''constructor''' with no parameters.

|-
| 03:35
| So type'' '''Student''' '''s1''' is equal to '''new''' '''Student''' parentheses'' semicolon.

|-
| 03:47
| This time we see no error, since we have define a constructor without parameter
|-
| 03:55
| Then''''' s1 '''dot''' studentDetail'''''.

|-
| 04:01
| '''Save''' and '''Run''' the program.

|-
| 04:04
| So in the output we see '''zero''' and '''dash''' and '''default''' '''constructor''' is called.

|-
| 04:11
| This is '''constructor''' '''overloading'''.

|-
| 04:13
| We have two '''constructor''' with different parameter.

|-
| 04:17
| Both the '''constructor''' obviously have same name.

|-
| 04:20
| So depending on the type and number of parameter, the '''constructor''' is called.

|-
| 04:26
| Let us see the advantage of '''constructor''' overloading.

|-
| 04:30
| Suppose now call a constructor with two parameters.

|-
| 04:35
| So type '''''Student s3= new Student();'''''

|-
| 04:51
| Now within parentheses, suppose i gave the '''name''' argument first and then the '''roll''' '''number.'''

|-
| 04:58
| let see what happens.

|-
| 04:59
| So in ''double quotes '''Raju''' comma '''45'''''

|-
| 05:08
| We see an error which states that the '''constructor student with the parameter String comma int is undefined.'''

|-
| 05:18
| So let us define the constructor.

|-
| 05:22
| So type '''''Student''' within parentheses '''String''' '''the_name''' comma '''int''' '''r_no'''''

|-
| 05:42
|So over here first parameter is '''string'' and the second parameter is '''int'''
|-
| 05:52
|Then '''Within curly bracket, '''roll_number''' is equal to '''r_no.'''''

|-
| 06:05
| And'' '''name''' is equal to '''the_name.'''''

|-
| 06:15
| '''Save''' the program.

|-
| 06:18
| Now we see that the error is resolved.

|-
| 06:22
| Let us call the method.

|-
| 06:24
| So '''''s3''''' ''dot'' '''''studentDetail.'''''

|-
| 06:29
| '''Save''' the program and '''Run'''

|-
| 06:35
|So we see the output'''45''' and '''Raju'''

|-
| 06:40
| So here we see that when we call the '''constructor'''.

|-
| 06:43
| We do not have to worry about the parameters that we are passing.

|-
| 06:47
| This is simply because we have define multiple '''constructor''' with different parameters.

|-
| 06:54
| So the proper '''constructor''' is '''overloaded.'''

|-
| 06:57
| We can therefore now define a '''constructor''' which takes only one parameter.

|-
| 07:02
| That is '''roll number'''.

|-
| 07:05
| So type '''''Student''' within parentheses''' int num'''.''

|-
| 07:16
| '' within curly brackets '''roll_number '''is equalto '''num'''.''

|-
| 07:25
| ''And '''name''' is equal to '''no''' '''name'''.''

|-
| 07:33
| Now let us call this '''constructor'''
|-
| 07:43
| So type '''''Student''''' '''''s4''''' ''is'' ''equalto'' '''''new''''' '''''Student''''' this time we will pass an single argument. So let us pass '''''61'''''

|-
| 08:04
| Then '''''s4 '''dot''' studentDetail '''''

|-
| 08:10
| '''Save''' and '''Run''' the program

|-
| 08:14
| So in the output we see the '''roll''' '''number''' as '''61''' and '''name''' as '''no''' '''name.'''

|-
| 08:21
| As we can see, the proper overloaded '''constructor''' is called when new is executed.

|-
| 08:27
| Based upon the parameters specified the proper '''constructor''' is overloaded.

|-
| 08:33
| This is how '''constructor''' '''overloading''' is done.

|-
| 08:40
| So in this tutorial, we have learnt

|-
| 08:42
| About the '''constructor overloading.'''

|-
| 08:45
| to overload '''constructor''' and the use of constructor overloading

|-
|08:50
| For self assessment, create multiple constructors for class '''Employee'''and Overload the '''constructor.'''

|-
| 08:58
| To know more about the Spoken Tutorial Project
|-
| 09:00
| Watch the video available at [http://spoken-tutorial.org/What_is_a_Spoken_Tutorial http://spoken-][http://spoken-tutorial.org/What_is_a_Spoken_Tutorial tutorial.org/What_is_a_Spoken_Tutorial]
|-
| 09:06
| It summarizes the Spoken Tutorial project

|-
| 09:09
| If you do not have good bandwidth, you can download and watch it

|-
| 09:12
| The Spoken Tutorial Project Team

|-
| 09:15
| Conducts workshops using spoken tutorials

|-
| 09:17
| Gives certificates to those who pass an online test

|-
| 09:20
| For more details, please write to contact@spoken-tutorial.org

|-
| 09:26
| Spoken Tutorial Project is a part of the Talk to a Teacher project

|-
| 09:30
| It is supported by the National Mission on Education through ICT, MHRD, Government of India

|-
| 09:35
| More information on this Mission is available at

* [http://spoken-tutorial.org/NMEICT-Intro http://spoken-tutorial.org/NMEICT-Intro]

|-
| 09:43
| This brings us to the end of the tutorial

|-
| 09:46
| Thanks for joining.

|-
| 09:47
| This is Prathamesh Salunke signing off. Jai Hind.

|}

@@ Line 25: / Line 25: @@
 |  અહીં આપણે વાપરી રહ્યા છીએ
-*ઉબુન્ટુ આવૃત્તિ 11.10 OS
+ઉબુન્ટુ આવૃત્તિ 11.10 OS
-* જાવા ડેવલપમેન્ટ કિટ 1.6
+ જાવા ડેવલપમેન્ટ કિટ 1.6
-* એક્લિપ્સ 3.7.0
+ એક્લિપ્સ 3.7.0
 |-
@@ Line 391: / Line 391: @@
 |  આ મિશન વિશે વધુ માહીતી આ લીંક ઉપર ઉપલબ્ધ છે
-* [http://spoken-tutorial.org/NMEICT-Intro http://spoken-tutorial.org/NMEICT-Intro]
+ [http://spoken-tutorial.org/NMEICT-Intro http://spoken-tutorial.org/NMEICT-Intro]
 |-

@@ Line 2: / Line 2: @@
 {| border=1
-|| ''Time'''
+|| '''Time'''
 || '''Narration'''

Java/C2/Constructor-overloading/Gujarati - Revision history

PoojaMoolya at 06:40, 28 February 2017

Jyotisolanki at 14:24, 21 February 2017

Pratik kamble at 07:25, 23 June 2014

Krupali at 11:00, 29 August 2013

Krupali at 07:04, 29 August 2013

Krupali: Created page with ' {| border=1 || ''Time''' || '''Narration''' |- | 00:03 | Welcome to the Spoken Tutorial on '''constructor overloading''' in''' java'''. |- | 00:08 | In this tutorial we …'