Difference between revisions of "Java/C2/Methods/English-timed"

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{| border=1
 
{| border=1
−
|| ''Time'''
+
|| '''Time'''
 
|| '''Narration'''
 
|| '''Narration'''
−
 
  
 
|-
 
|-
−
| 00:02
+
|00:02
−
| Welcome to the Spoken Tutorial on '''methods in  java'''.
+
| Welcome to the Spoken Tutorial on '''methods''' in  java.
  
 
|-
 
|-
 
|00:06
 
|00:06
−
|   In this tutorial we will learn  
+
|In this tutorial, we will learn:
  
 
|-
 
|-
 
|00:08
 
|00:08
−
|   To create a method.   
+
|To create a '''method'''.   
  
 
|-
 
|-
 
|00:10
 
|00:10
−
| And To call a method.  
+
|And to '''call''' a '''method'''.  
  
 
|-
 
|-
−
| 00:13
+
|00:13
−
| Here we are using  
+
|Here we are using,'''Ubuntu version 11.10'''
  
−
|-
 
−
|00:14
 
−
|  Ubuntu version 11.10
 
 
|-
 
|-
 
|00:17
 
|00:17
−
| Java Development kit 1.6 and
+
|'''Java Development kit 1.6''' and
 +
 
 
|-
 
|-
 
|00:20
 
|00:20
−
|   Eclipse 3.7.0
+
|'''Eclipse 3.7.0'''
−
 
+
−
 
+
  
 
|-
 
|-
−
|   00:24
+
| 00:24
−
| To follow this tutorial you must know how to write, compile and run a simple java program in eclipse.
+
| To follow this tutorial, you must know how to write, compile and run a simple java program in '''eclipse'''.
−
 
+
  
 
|-
 
|-
 
|00:32
 
|00:32
−
| If not, for relevant tutorials please visit our website which is as shown,
+
|If not, for relevant tutorials, please visit our website which is as shown.
−
 
+
http://www.spoken-tutorial.org  
−
(http://www.spoken-tutorial.org)
+
  
 
|-
 
|-
 
|00:40
 
|00:40
−
 
+
|A java '''method''' is a collection of statements that performs a specified operation.
−
 
+
−
|A java method is a collection of statements that performs a specified operation.
+
  
 
|-
 
|-
−
| 00:46
+
|00:46
−
|Let us now write a method.
+
|Let us now write a '''method'''.
−
 
+
  
 
|-
 
|-
 
|00:50
 
|00:50
−
| So, in the '''eclipse,''' I have already created a project Methods.
+
|So, in the '''eclipse,''' I have already created a project '''Methods'''.
  
 
|-
 
|-
−
| 00:57
+
|00:57
−
|   In the project, I have created a java class name '''MethodDemo'''.
+
|In the project, I have created a java class named '''MethodDemo'''.
  
 
|-
 
|-
−
| 01:06
+
|01:06
−
| In the class outside the main method we will write a method.
+
|In the '''class''', outside the '''main method''', we will write a '''method'''.
−
 
+
  
 
|-
 
|-
 
|01:13
 
|01:13
−
| So type '''''void''''' name of the method
+
|So, type: '''void''' name of the '''method'''
  
 
|-
 
|-
 
|01:19
 
|01:19
−
| Let us name it as '''''displayMessage''''' ''parentheses''  '''Enter'''
+
|Let us name it as '''displayMessage''' parentheses '''Enter'''.
  
 
|-
 
|-
 
|01:29
 
|01:29
−
| And ''curly'' ''brackets.''
+
|And curly brackets.
  
 
|-
 
|-
−
| 01:32
+
|01:32
−
| A method can  return a value.
+
|A '''method''' can  return a value.
  
 
|-
 
|-
 
|01:34
 
|01:34
−
| But if you don’t want the method to return a value then the keyword '''void'''is used.
+
|But if you don’t want the method to return a value then the keyword '''void''' is used.
  
 
|-
 
|-
−
| 01:42
+
|01:42
−
| Alright now inside the curly brackets, let us print a message.
+
|Alright, now inside the curly brackets, let us print a message.
  
 
|-
 
|-
 
|01:47
 
|01:47
−
| So type '''''System '''dot''' out '''dot''' println ''Hello''' '''Method'''.  
+
|So, type: '''System '''dot''' out '''dot '''println Hello Method'''.  
  
 
|-
 
|-
−
| 02:06
+
|02:06
−
| So we have written a method.
+
|So, we have written a '''method'''.
  
 
|-
 
|-
 
|02:10
 
|02:10
−
|Now  we will call this method.
+
|Now, we will '''call''' this '''method'''.
  
 
|-
 
|-
 
|02:13
 
|02:13
−
| So inside the  '''Main''' method,  we will  create an object of the class'''MethodDemo'''.
+
|So, inside the  '''main''' method,  we will  create an object of the '''class''' '''MethodDemo'''.
  
 
|-
 
|-
 
|02:21
 
|02:21
−
| So   '''MethodDemo''' object name.
+
|So, '''MethodDemo''' object name.
  
 
|-
 
|-
 
|02:26
 
|02:26
−
| Let's name it as '''md =new ''' '''MethodDemo''' ''parentheses'', ''semicolon.''
+
|Let's name it as '''md =new ''' '''MethodDemo''' parentheses semicolon.  
  
 
|-
 
|-
−
| 02:37
+
|02:37
−
| So we have created an object '''md'''of the class '''MethodDemo''' using the '''New''' operator.
+
|So, we have created an object '''md''' of the class '''MethodDemo''' using the '''new''' operator.
  
 
|-
 
|-
−
| 02:48
+
|02:48
−
| Now let us call the method '''displayMessage.'''
+
| Now, let us call the method '''displayMessage.'''
  
 
|-
 
|-
−
| 02:51
+
| 02:51
−
| So type '''''md''''' ''dot'' '''''displayMessage'''''  
+
| So, type: '''md''' dot '''displayMessage();'''.  
−
 
+
−
 
+
  
 
|-
 
|-
−
| 03:00
+
|03:00
−
| The '''Dot''' operator is used to call the method.
+
|The 'dot' operator is used to '''call''' the '''method'''.
  
 
|-
 
|-
−
| 03:06
+
| 03:06
−
| Now  let us '''Run''' this application by clicking on '''Run'''icon.
+
| Now, let us '''Run''' this application by clicking on '''Run''' icon.
  
 
|-
 
|-
 
| 03:14
 
| 03:14
−
| We see the output '''Hello''' '''Method '''on''' '''the''' '''console
+
| We see the output '''Hello Method '''on the '''console'''.
  
 
|-
 
|-
 
| 03:20
 
| 03:20
−
|Now let us return an '''integer ''' instead of'''void'''.
+
|Now, let us return an '''integer ''' instead of '''void'''.
  
 
|-
 
|-
 
|03:26
 
|03:26
−
| So type '''''int.'''''
+
| So, type: '''int'''.
  
 
|-
 
|-
 
|03:32
 
|03:32
−
|   Also make the method '''public''', that is accessible everywhere.
+
|Also, make the method '''public''', that is accessible everywhere.
  
 
|-
 
|-
 
|03:37
 
|03:37
−
| By default it is '''private''', that is accessible only within the class where it is written.
+
|By default, it is '''private''', that is accessible only within the class where it is written.
−
 
+
−
+
  
 
|-
 
|-
−
| 03:45   
+
|03:45   
−
| Now inside the method type '''''return''''' ''seven'', ''semicolon''.
+
|Now, inside the method, type '''return''' seven semicolon.
  
 
|-
 
|-
−
| 03:55
+
|03:55
−
| Remember that we write  the '''return'''  statement  at the end of all in the method.
+
|Remember that we write  the '''return'''  statement  at the end of all statements in the '''method'''.
  
 
|-
 
|-
 
|04:02
 
|04:02
−
| This is because after '''return''' statement no other statements are executed.
+
|This is because after '''return''' statement no other statements are executed.
  
 
|-
 
|-
−
| 04:08
+
|04:08
−
|   Now inside the '''Main''' method at the end type the ''' print statement'''.
+
|Now, inside the '''main''' method, at the end, type the 'print' statement.
  
 
|-
 
|-
 
|04:15
 
|04:15
−
| So type '''System''' ''dot'' '''out''' ''dot'' '''println();'''
+
|So, type: '''System''' dot '''out''' dot '''println();'''
  
 
|-
 
|-
−
| 04:23
+
|04:23
−
| Within ''parenthesis'' we will call the method.
+
|Within parentheses, we will '''call''' the '''method'''.
  
 
|-
 
|-
 
|04:28
 
|04:28
−
| So put '''''md''''' ''dot'' method inside the ''parentheses''  remove the ''semi''-''colon''.
+
|So, put '''md''' dot '''method''' inside the parentheses, remove the semicolon.
  
 
|-
 
|-
 
|04:37
 
|04:37
−
| This will print the return value of the method.
+
|This will print the '''return''' value of the method.
  
 
|-
 
|-
−
| 04:42
+
|04:42
−
| '''Run''' the application.
+
|'''Run''' the application.
  
 
|-
 
|-
−
| 04:45  
+
|04:45  
−
| We see in the output, the value '''7''' is printed.
+
|We see in the output, the value '''7''' is printed.
  
 
|-
 
|-
−
| 04:51
+
|04:51
−
| Now we will write another method and call this methd in '''displayMessage.'''
+
|Now we will write another method and call this method in '''displayMessage.'''
  
 
|-
 
|-
 
|04:59
 
|04:59
−
| So type '''''public void '''''method name '''''square '''''within ''parentheses'' '''''int a'''''.
+
| So, type: '''public void ''' method name '''square ''' within parentheses '''int a'''.
  
 
|-
 
|-
−
| 05:15
+
|05:15
−
| | Here we are giving '''int a''' as a parameter to our method.
+
|Here, we are giving '''int a''' as a parameter to our method.
  
 
|-
 
|-
−
| 05:20
+
| 05:20
−
| Now within ''curly'' brackets type, '''''System '''dot '''out '''dot''' println''''' within parentheses '''''a''''' ''into'' '''''a'''''.
+
| Now, within curly brackets type: '''System '''dot '''out '''dot '''println''' within parentheses '''a''' into '''a'''.
  
 
|-
 
|-
 
| 05:37
 
| 05:37
−
| So we have written a '''square''' method.
+
| So, we have written a '''square''' method
  
 
|-
 
|-
 
|05:40
 
|05:40
−
| That will display a square of an integer which is  given as a parameter.
+
| that will display a square of an integer which is  given as a parameter.
  
 
|-
 
|-
−
| 05:48
+
|05:48
−
| Let us call this method in the '''displayMessage''' method.  
+
|Let us call this method in the '''displayMessage''' method.  
  
 
|-
 
|-
 
|05:53
 
|05:53
−
| So type '''''square''''' within ''parentheses'' an integer '''''5''''', ''semicolon.''
+
| So, type: '''square''' within parentheses an integer '''5''' semicolon.
  
 
|-
 
|-
−
| 06:07
+
| 06:07
−
|  | '''Run''' this application.
+
| '''Run''' this application.
  
 
|-
 
|-
 
|06:12
 
|06:12
−
| We see that the output displays the square of '''5''' that is '''25.'''
+
|We see that the output displays the square of '''5''' that is '''25.'''
  
 
|-
 
|-
 
|06:19   
 
|06:19   
−
| Now let us understand the flow of the application.
+
|Now, let us understand the flow of the application.
  
 
|-
 
|-
 
|06:24
 
|06:24
−
| The starting point is the '''Main''' method.
+
|The starting point is the '''main''' '''method'''.
  
 
|-
 
|-
−
| 06:29
+
|06:29
−
| In the '''Main '''method''', '''we have first called the '''displayMessage'''.
+
|In the '''Main '''method''', '''we have first called the '''displayMessage'''.
  
 
|-
 
|-
−
| 06:34
+
|06:34
−
| So the control goes to the '''displayMessage.'''
+
|So, the control goes to the '''displayMessage'''
  
 
|-
 
|-
 
|06:40
 
|06:40
−
| And all the statements in the '''displayMessage''' are executed.  
+
|and all the statements in the '''displayMessage''' are executed.  
  
 
|-
 
|-
 
|06:45
 
|06:45
−
| The first one is the '''print''' statement.
+
|The first one is the '''print''' statement.
  
 
|-
 
|-
−
| 06:50
+
|06:50
−
|   Then it comes across the '''square''' method.
+
|Then it comes across the '''square''' method.
  
 
|-
 
|-
−
| 06:54
+
|06:54
−
| So the control jumps to the '''square''' method.  
+
| So the control jumps to the '''square''' method.  
  
 
|-
 
|-
 
|06:57
 
|06:57
−
| The square method takes an '''integer 5''' and returns the square of the integer i.e. '''25'''.
+
| The square method takes an '''integer 5''' and returns the square of the integer i.e. '''25'''.
  
 
|-
 
|-
 
| 07:06
 
| 07:06
−
| Then the control goes back to the '''displayMessage'''.
+
| Then the control goes back to the '''displayMessage'''.
  
 
|-
 
|-
−
| 07:10
+
| 07:10
 
|And it returns the value '''7'''.
 
|And it returns the value '''7'''.
  
 
|-
 
|-
 
| 07:14
 
| 07:14
−
| Then the control jumps back to the '''Main'''  console.
+
| Then the control jumps back to the '''main'''  function.
  
 
|-
 
|-
 
| 07:20
 
| 07:20
−
| Since there are no statements left to execute, in the '''main''' method the application terminates
+
| Since there are no statements left to execute, in the '''main''' method, the application terminates.
  
 
|-
 
|-
−
| 07:29
+
| 07:29
−
| Alright now let us  make '''displayMessage''' as '''static'''.
+
| Alright! Now let us  make '''displayMessage''' as '''static'''.
  
 
|-
 
|-
 
|07:35
 
|07:35
−
| So after '''''public''''' type '''''static''.'''
+
| So, after '''public''' type '''static.'''
  
 
|-
 
|-
 
| 07:40
 
| 07:40
−
|   We see that we cannot call a non static method inside the '''static'''  method
+
| We see that we cannot call a 'non static' method inside the '''static'''  method.
  
 
|-
 
|-
−
| 07:47
+
| 07:47
−
| So we will comment this call.
+
| So, we will '''comment''' this '''call'''.
  
 
|-
 
|-
 
| 07:52
 
| 07:52
−
| Since '''Main''' is a static method, we can call the '''static  displayMessage '''inside this
+
| Since '''main''' is a static method, we can call the '''static  displayMessage '''inside this.
  
 
|-
 
|-
−
| 08:02
+
|08:02
−
| Now for static method we do not need to create  an  object.
+
| Now, for '''static method''', we do not need to create  an  object.
  
 
|-
 
|-
 
|08:07
 
|08:07
−
| So we will comment this object creation.
+
| So, we will '''comment''' this object creation.
  
 
|-
 
|-
−
| 08:11
+
| 08:11
−
| Also  we will '''Delete''' '''md.'''
+
| Also  we will delete '''md.'''
  
 
|-
 
|-
−
| 08:18   
+
|08:18   
−
| '''Run''' the application.
+
|'''Run''' the application.
  
 
|-
 
|-
 
|08:22
 
|08:22
−
| We see the output '''Hello Method '''and '''7'''.
+
|We see the output '''Hello Method '''and '''7'''.
  
 
|-
 
|-
 
|08:27
 
|08:27
−
| We do not see  25 because we have commented the call to square method
+
|We do not see  25 because we have commented the call to '''square''' method.
  
 
|-
 
|-
−
| 08:34  
+
|08:34  
−
| We can also call method from other class.
+
|We can also call '''method''' from other '''class'''.
  
 
|-
 
|-
 
|08:38
 
|08:38
−
| For that I have created a class '''Demo.'''
+
|For that, I have created a class '''Demo.'''
  
 
|-
 
|-
−
| 08:45
+
|08:45
−
|   Inside the class create a method.
+
|Inside the '''class''', create a '''method'''.
  
 
|-
 
|-
 
|08:48
 
|08:48
−
| So type '''''public void show''' parentheses'' '''Enter'''
+
|So, type: '''public void show''' parentheses '''Enter'''.
  
 
|-
 
|-
 
|08:56
 
|08:56
−
| Inside ''curly brackets'', ''''' System '''dot''' out '''dot''' println'''''
+
|Inside curly brackets, '''System '''dot''' out '''dot''' println'''
  
 
|-
 
|-
 
|09:07
 
|09:07
−
| '''''I am from other class.'''''
+
| '''I am from other class.'''
−
 
+
  
 
|-
 
|-
Line 370: Line 354:
 
|-
 
|-
 
|09:16
 
|09:16
−
| Go back to method '''MethodDemo''' class
+
| Go back to '''MethodDemo''' class.
  
 
|-
 
|-
 
| 09:19
 
| 09:19
−
| Now we will call this '''show''' method inside the method '''MethodDemo''' class.
+
| Now we will '''call''' this '''show''' method, inside the method '''MethodDemo''' class.
  
 
|-
 
|-
 
|09:28
 
|09:28
−
| For that we need to create the object of the class '''Demo.'''
+
| For that we need to create the object of the class '''Demo.'''
  
 
|-
 
|-
−
|09:22
+
|09:32
−
| This is because the  '''show'''  method belongs to the class '''Demo.'''
+
|This is because the  '''show'''  method belongs to the class '''Demo.'''
  
 
|-
 
|-
 
|09:38
 
|09:38
−
| So type '''Demo d=new Demo''' ''parentheses,'' ''semicolon''
+
| So, type: '''Demo d=new Demo''' parentheses semicolon.
  
 
|-
 
|-
−
| 09:48
+
|09:48
−
| Then call the method '''show''' parentheses.
+
|Then call the method '''show'''.
  
 
|-
 
|-
−
| 09:54
+
| 09:54
−
| Lets '''Run''' this application.
+
| Lets '''Run''' this application.
  
 
|-
 
|-
 
|09:58
 
|09:58
−
| We see on the console '''I am from other class'''.
+
| We see on the console: '''I am from other class'''.
  
 
|-
 
|-
 
|10:04
 
|10:04
−
|  This is how methods are used in java.
+
|  This is how '''methods''' are used in java.
  
 
|-
 
|-
 
|10:09   
 
|10:09   
−
|  The method name and the parameters forms the signature of the method.
+
|  The '''method''' name and the parameters form the signature of the '''method'''
  
 
|-
 
|-
 
|10:14
 
|10:14
−
| While the curly brackets and the statements forms the body of the method.  
+
| while the curly brackets and the statements form the body of the '''method'''.  
  
 
|-
 
|-
 
|10:23  
 
|10:23  
−
| So in this tutorial, we have learnt  
+
| So, in this tutorial, we have learnt:
  
 
|-
 
|-
 
|10:25
 
|10:25
−
|   To create a method
+
|To create a '''method'''
 +
 
 
|-
 
|-
 
|10:27
 
|10:27
−
| To call a method
+
|To call a '''method'''
 +
 
 
|-
 
|-
 
|10:29
 
|10:29
−
| And Different signatures of methods
+
|And different signatures of '''methods'''.
−
 
+
−
 
+
  
 
|-
 
|-
 
| 10:32
 
| 10:32
−
|  | For self assessment, create a method which prints the cube of an integer.
+
| For self assessment, create a '''method''' which prints the cube of an integer.
  
 
|-
 
|-
−
| 10:38
+
| 10:38
−
| To know more about the Spoken Tutorial Project
+
| To know more about the Spoken Tutorial project,
 +
 
 
|-
 
|-
 
|10:41
 
|10:41
−
| 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]
+
|watch the video available at http://spoken-tutorial.org/What_is_a_Spoken_Tutorial.  
 +
 
 
|-
 
|-
 
|10:47
 
|10:47
−
| It  summarizes the Spoken Tutorial project  
+
|It  summarizes the Spoken Tutorial project.
  
 
|-
 
|-
 
|10:50
 
|10:50
−
|   If you do not have good bandwidth, you can download and watch it  
+
|If you do not have good bandwidth, you can download and watch it.
−
 
+
−
 
+
  
 
|-
 
|-
−
| 10:54
+
|10:54
−
| The Spoken Tutorial Project Team
+
|The Spoken Tutorial project team:
  
 
|-
 
|-
 
|10:56
 
|10:56
−
|   Conducts workshops using spoken tutorials  
+
|Conducts workshops using spoken tutorials.
  
 
|-
 
|-
 
|10:58
 
|10:58
−
|   Gives certificates to those who have pass an online test  
+
|Gives certificates to those who have passed an online test.
  
 
|-
 
|-
 
|11:02
 
|11:02
−
| For more details, please write to contact@spoken-tutorial.org  
+
|For more details, please write to contact@spoken-tutorial.org  
−
 
+
−
 
+
  
 
|-
 
|-
−
| 11:08  
+
|11:08  
−
| Spoken Tutorial Project is a part of the Talk to a Teacher project  
+
|Spoken Tutorial project is a part of the Talk to a Teacher project.
  
 
|-
 
|-
 
|11:12
 
|11:12
−
|   It is supported by the National Mission on Education through ICT, MHRD, Government of India  
+
|It is supported by the National Mission on Education through ICT, MHRD, Government of India.
  
 
|-
 
|-
 
|11:18
 
|11:18
−
| More information on this Mission is available at  
+
|More information on this mission is available at http://spoken-tutorial.org/NMEICT-Intro.  
−
[http://spoken-tutorial.org/NMEICT-Intro http://spoken-tutorial.org/NMEICT-Intro]
+
−
 
+
−
 
+
  
 
|-
 
|-
−
| 11:27
+
|11:27
−
| We have come to the end of this tutorial.
+
|We have come to the end of this tutorial.
  
 
|-
 
|-
 
|11:29
 
|11:29
−
| Thanks for joining.
+
|Thanks for joining.This is Prathamesh Salunke, signing off.  
−
 
+
−
|-
+
−
|11:30
+
−
|  This is Prathamesh Salunke signing off.  
+
−
 
+
 
Jai Hind.  
 
Jai Hind.  
  
 
|}
 
|}

Latest revision as of 15:26, 28 March 2017

Time Narration
00:02 Welcome to the Spoken Tutorial on methods in java.
00:06 In this tutorial, we will learn:
00:08 To create a method.
00:10 And to call a method.
00:13 Here we are using,Ubuntu version 11.10
00:17 Java Development kit 1.6 and
00:20 Eclipse 3.7.0
00:24 To follow this tutorial, you must know how to write, compile and run a simple java program in eclipse.
00:32 If not, for relevant tutorials, please visit our website which is as shown.

http://www.spoken-tutorial.org

00:40 A java method is a collection of statements that performs a specified operation.
00:46 Let us now write a method.
00:50 So, in the eclipse, I have already created a project Methods.
00:57 In the project, I have created a java class named MethodDemo.
01:06 In the class, outside the main method, we will write a method.
01:13 So, type: void name of the method
01:19 Let us name it as displayMessage parentheses Enter.
01:29 And curly brackets.
01:32 A method can return a value.
01:34 But if you don’t want the method to return a value then the keyword void is used.
01:42 Alright, now inside the curly brackets, let us print a message.
01:47 So, type: System dot out dot println Hello Method.
02:06 So, we have written a method.
02:10 Now, we will call this method.
02:13 So, inside the main method, we will create an object of the class MethodDemo.
02:21 So, MethodDemo object name.
02:26 Let's name it as md =new MethodDemo parentheses semicolon.
02:37 So, we have created an object md of the class MethodDemo using the new operator.
02:48 Now, let us call the method displayMessage.
02:51 So, type: md dot displayMessage();.
03:00 The 'dot' operator is used to call the method.
03:06 Now, let us Run this application by clicking on Run icon.
03:14 We see the output Hello Method on the console.
03:20 Now, let us return an integer instead of void.
03:26 So, type: int.
03:32 Also, make the method public, that is accessible everywhere.
03:37 By default, it is private, that is accessible only within the class where it is written.
03:45 Now, inside the method, type return seven semicolon.
03:55 Remember that we write the return statement at the end of all statements in the method.
04:02 This is because after return statement no other statements are executed.
04:08 Now, inside the main method, at the end, type the 'print' statement.
04:15 So, type: System dot out dot println();
04:23 Within parentheses, we will call the method.
04:28 So, put md dot method inside the parentheses, remove the semicolon.
04:37 This will print the return value of the method.
04:42 Run the application.
04:45 We see in the output, the value 7 is printed.
04:51 Now we will write another method and call this method in displayMessage.
04:59 So, type: public void method name square within parentheses int a.
05:15 Here, we are giving int a as a parameter to our method.
05:20 Now, within curly brackets type: System dot out dot println within parentheses a into a.
05:37 So, we have written a square method
05:40 that will display a square of an integer which is given as a parameter.
05:48 Let us call this method in the displayMessage method.
05:53 So, type: square within parentheses an integer 5 semicolon.
06:07 Run this application.
06:12 We see that the output displays the square of 5 that is 25.
06:19 Now, let us understand the flow of the application.
06:24 The starting point is the main method.
06:29 In the Main method, we have first called the displayMessage.
06:34 So, the control goes to the displayMessage
06:40 and all the statements in the displayMessage are executed.
06:45 The first one is the print statement.
06:50 Then it comes across the square method.
06:54 So the control jumps to the square method.
06:57 The square method takes an integer 5 and returns the square of the integer i.e. 25.
07:06 Then the control goes back to the displayMessage.
07:10 And it returns the value 7.
07:14 Then the control jumps back to the main function.
07:20 Since there are no statements left to execute, in the main method, the application terminates.
07:29 Alright! Now let us make displayMessage as static.
07:35 So, after public type static.
07:40 We see that we cannot call a 'non static' method inside the static method.
07:47 So, we will comment this call.
07:52 Since main is a static method, we can call the static displayMessage inside this.
08:02 Now, for static method, we do not need to create an object.
08:07 So, we will comment this object creation.
08:11 Also we will delete md.
08:18 Run the application.
08:22 We see the output Hello Method and 7.
08:27 We do not see 25 because we have commented the call to square method.
08:34 We can also call method from other class.
08:38 For that, I have created a class Demo.
08:45 Inside the class, create a method.
08:48 So, type: public void show parentheses Enter.
08:56 Inside curly brackets, System dot out dot println
09:07 I am from other class.
09:13 Save the file.
09:16 Go back to MethodDemo class.
09:19 Now we will call this show method, inside the method MethodDemo class.
09:28 For that we need to create the object of the class Demo.
09:32 This is because the show method belongs to the class Demo.
09:38 So, type: Demo d=new Demo parentheses semicolon.
09:48 Then call the method show.
09:54 Lets Run this application.
09:58 We see on the console: I am from other class.
10:04 This is how methods are used in java.
10:09 The method name and the parameters form the signature of the method
10:14 while the curly brackets and the statements form the body of the method.
10:23 So, in this tutorial, we have learnt:
10:25 To create a method
10:27 To call a method
10:29 And different signatures of methods.
10:32 For self assessment, create a method which prints the cube of an integer.
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11:27 We have come to the end of this tutorial.
11:29 Thanks for joining.This is Prathamesh Salunke, signing off.

Jai Hind.

Contributors and Content Editors

Arya Ratish, Gaurav, Jyotisolanki, PoojaMoolya, Priyacst, Sandhya.np14, Sneha

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