Sneha at 05:36, 8 May 2013

2013-05-08T05:36:28Z

Sneha at 04:35, 8 May 2013

2013-05-08T04:35:24Z

Chandrika: Created page with ''''Title of script''': Arithmetic Operations in Java '''Author''': TalentSprint '''Keywords: '''datatype, int, float, numerical data, arithmetic operations, operator precedence…'

2012-11-27T10:11:19Z

Created page with ''''Title of script''': Arithmetic Operations in Java '''Author''': TalentSprint '''Keywords: '''datatype, int, float, numerical data, arithmetic operations, operator precedence…'

New page

'''Title of script''': Arithmetic Operations in Java

'''Author''': TalentSprint

'''Keywords: '''datatype, int, float, numerical data, arithmetic operations, operator precedence, video tutorial

{| style="border-spacing:0;"
| style="border:0.035cm solid #000000;padding:0.097cm;"| '''Visual Cue '''
| style="border:0.035cm solid #000000;padding:0.097cm;"| '''Narration'''

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| Slide 1

'''Welcome'''
| style="border:0.035cm solid #000000;padding:0.097cm;"| Welcome to the spoken tutorial on '''Arithmetic Operations in Java'''.

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| Slide 2

'''Learning Outcomes'''
| style="border:0.035cm solid #000000;padding:0.097cm;"| In this tutorial, you will learn about the various '''Numeric Operators in Java that are'''

'''Addition'''

'''Subtraction'''

'''Multiplication'''

'''Division''' and

'''How to use them.'''

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| Slide 3

'''Tools Used'''
| style="border:0.035cm solid #000000;padding:0.097cm;"| For this tutorial we are using

'''Ubuntu 11.10''',

'''JDK 1.6''' and

'''Eclipse 3.7'''

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| Slide 4

'''Prerequisites'''
| style="border:0.035cm solid #000000;padding:0.097cm;"| For this tutorial, you should have

'''Eclipse '''installed on your system and

should '''know how to create, save and run a file in Eclipse'''.

If not, for relevant tutorial please visit our website as shown.

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| Slide 5

'''Operators'''
| style="border:0.035cm solid #000000;padding:0.097cm;"| Here is a list of operators and the mathematical operations they perform

* plus symbol for addition
* minus for subtraction
* asterisk for multiplication
* front slash for division

We shall look at each of them in detail.

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| Minimize Slides and open Eclipse

Eclipse should contain the following code

'''public class ArithmeticOperations{'''

'''public static void main(String<nowiki>[] </nowiki>args){'''

'''}'''

'''}'''
| style="border:0.035cm solid #000000;padding:0.097cm;"| We have Eclipse IDE and the skeleton required for the rest of the code.

We have created a class by name '''ArithmeticOperations''' and added the '''main '''method.

Let us add some variables.

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| Type in main method

'''int x = 5;'''

'''int y = 10;'''

'''int result<nowiki>;</nowiki>'''
| style="border:0.035cm solid #000000;padding:0.097cm;"| We have created three variable.

'''x''' and '''y''' will behave as operands while '''result''' will store the output of two operands.

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| Type in main method

'''result = x + y<nowiki>;</nowiki>'''

'''System.out.println(result);'''
| style="border:0.035cm solid #000000;padding:0.097cm;"| Let us add them and print the result.

|-
| style="border:0.035cm solid #000000;padding:0.176cm;"| '''Save''' and '''Run'''.
| style="border:0.035cm solid #000000;padding:0.176cm;"| Now let us '''Run''' the code.

|-
| style="border:0.035cm solid #000000;padding:0.176cm;"| Point to output.
| style="border:0.035cm solid #000000;padding:0.176cm;"| As we can see, the result now has the sum of values in '''x '''and '''y.'''

|-
| style="border:0.035cm solid #000000;padding:0.176cm;"| Change '''x = 5 '''to '''x = 75''' and '''y = 10 '''to '''y = 15'''
| style="border:0.035cm solid #000000;padding:0.176cm;"| Let us change the values now.

So type 75 in place of 5

And 10 in place of 15

|-
| style="border:0.035cm solid #000000;padding:0.176cm;"| '''Save''' and '''Run'''.
| style="border:0.035cm solid #000000;padding:0.176cm;"| '''Save''' and '''Run'''

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| Point to output
| style="border:0.035cm solid #000000;padding:0.097cm;"| As we can see the output changes as we change the values.

|-
| style="border:0.035cm solid #000000;padding:0.176cm;"| Change '''y = 15 '''to '''y = -25.'''
| style="border:0.035cm solid #000000;padding:0.176cm;"| Now let us try negative values.

So type -25 in place of 15

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| '''Save''' and '''Run'''.
| style="border:0.035cm solid #000000;padding:0.097cm;"| '''Save''' and '''Run.'''

|-
| style="border:0.035cm solid #000000;padding:0.176cm;"| Point to output
| style="border:0.035cm solid #000000;padding:0.176cm;"| As we can see, the effect is same as subtracting '''y''' from '''x'''.

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| Change '''y = -25''' to '''y = 5''' and '''x + y '''to '''x – y'''

| style="border:0.035cm solid #000000;padding:0.097cm;"| Now let us try subtraction.

So type 5 in place of -25

And '''minus''' in place of '''plus'''

|-
| style="border:0.035cm solid #000000;padding:0.176cm;"| '''Save''' and '''Run'''.
| style="border:0.035cm solid #000000;padding:0.176cm;"| '''Save '''and '''Run.'''

|-
| style="border:0.035cm solid #000000;padding:0.176cm;"| Point to output
| style="border:0.035cm solid #000000;padding:0.176cm;"| As we can see, we can perform subtraction using the '''minus''' operator.

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| Change '''x – y '''to '''x * y'''
| style="border:0.035cm solid #000000;padding:0.097cm;"| Let us try the multiplication.

So type asterisk in place of minus.

|-
| style="border:0.035cm solid #000000;padding:0.176cm;"| '''Save''' and '''Run.'''
| style="border:0.035cm solid #000000;padding:0.176cm;"| '''Save''' and '''Run.'''

|-
| style="border:0.035cm solid #000000;padding:0.176cm;"| Point to output
| style="border:0.035cm solid #000000;padding:0.176cm;"| As we can see, the asterisk symbol is used to perform multiplication.

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| Change '''x * y''' to '''x / y'''

| style="border:0.035cm solid #000000;padding:0.097cm;"| So type front slash in place of asterisk.

The front slash symbol is used to perform division.

|-
| style="border:0.035cm solid #000000;padding:0.176cm;"| '''Save''' and '''Run.'''
| style="border:0.035cm solid #000000;padding:0.176cm;"| '''Save''' and '''Run.'''

|-
| style="border:0.035cm solid #000000;padding:0.176cm;"| Point to output
| style="border:0.035cm solid #000000;padding:0.176cm;"| As we can see, the output is as expected.

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| Change '''y = 5''' to '''y = 10'''

| style="border:0.035cm solid #000000;padding:0.097cm;"| Now let us see what happens when the expected result is a decimal point number.

Change '''5''' to '''10'''

The result must be 7.5.

So let us change the result to float.

|-
| style="border:0.035cm solid #000000;padding:0.176cm;"| Change '''int result''' to '''float result'''
| style="border:0.035cm solid #000000;padding:0.176cm;"| Change '''int''' to '''float'''

|-
| style="border:0.035cm solid #000000;padding:0.176cm;"| '''Save''' and '''Run'''.

Point to output.
| style="border:0.035cm solid #000000;padding:0.176cm;"| Note that although the expected result is 7.5, we get the output as 7.0

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| Point to the operands.
| style="border:0.035cm solid #000000;padding:0.097cm;"| This is because both the operands involved in the division are integers.

|-
| style="border:0.035cm solid #000000;padding:0.176cm;"| Change '''y = 10''' to '''y = 10f'''
| style="border:0.035cm solid #000000;padding:0.176cm;"| Let us change y to a float.

Add an '''f''' at the end.

|-
| style="border:0.035cm solid #000000;padding:0.176cm;"| '''Save''' and '''Run.''' Point to output.
| style="border:0.035cm solid #000000;padding:0.176cm;"| '''Save''' and '''Run.'''

Now we can see that the result is as expected.

Keep in mind that when the expected result is a float, one of the operands must be a float to get the expected output.

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| Remove everything inside the main function, except the print line and add the following, before

'''Int result = 8 + 4 – 2;'''

| style="border:0.035cm solid #000000;padding:0.097cm;"| Now let us see what happens when there is more than one operator.

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| '''Save''' and '''Run'''.

Point to output
| style="border:0.035cm solid #000000;padding:0.097cm;"| The result we would expect is 10.

Let us '''Save''' and '''Run'''

As we can see, the output is as expected.

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| Change '''8 + 4 – 2''' to '''8 + 4 / 2'''

'''Save''' and '''Run'''.

Point to output
| style="border:0.035cm solid #000000;padding:0.097cm;"| Change '''minus''' to '''front slash'''

Now the output could be 6 if the addition is done before the division.

And 10 if division is done before addition.

Let us '''Run''' and see the output.

As we can see, the division is done before addition. This is because the division operator has more precedence than the addition operator.

In such situations, if we need to override the precedence, we use parentheses.

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| Change '''8 + 4 / 2''' to '''(8 + 4) / 2'''

'''Save''' and '''Run'''.

Point to output
| style="border:0.035cm solid #000000;padding:0.097cm;"| Add parentheses around '''8 + 4'''

By adding parentheses, we instruct Java to do the addition before the division.

Let us run the file.

As we can see, the output is 6 as expected.

As a rule, keep in mind to use parentheses when the order of operations is not clear.

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| Minimize the '''Eclipse''' window and switch to slides.

Slide 6

'''Summary'''
| style="border:0.035cm solid #000000;padding:0.097cm;"| We have come to the end of this tutorial.

In this tutorial we have learnt

'''How to''' '''perform basic mathematical operations in Java.'''

'''About operator precedence, and, '''

'''How to override it.'''

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| Slide 7'''Assignment'''

| style="border:0.035cm solid #000000;padding:0.097cm;"| Find out what is meant by the '''modulo''' operator and what it does.

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| Slide 8'''About the Spoken Tutorial Project'''

* Watch the video available at[http://spoken-tutorial.org/What_is_a_Spoken_Tutorial ][http://spoken-tutorial.org/What_is_a_Spoken_Tutorial http][http://spoken-tutorial.org/What_is_a_Spoken_Tutorial ://][http://spoken-tutorial.org/What_is_a_Spoken_Tutorial spoken][http://spoken-tutorial.org/What_is_a_Spoken_Tutorial -][http://spoken-tutorial.org/What_is_a_Spoken_Tutorial tutorial][http://spoken-tutorial.org/What_is_a_Spoken_Tutorial .][http://spoken-tutorial.org/What_is_a_Spoken_Tutorial org][http://spoken-tutorial.org/What_is_a_Spoken_Tutorial /][http://spoken-tutorial.org/What_is_a_Spoken_Tutorial What][http://spoken-tutorial.org/What_is_a_Spoken_Tutorial _][http://spoken-tutorial.org/What_is_a_Spoken_Tutorial is][http://spoken-tutorial.org/What_is_a_Spoken_Tutorial _][http://spoken-tutorial.org/What_is_a_Spoken_Tutorial a][http://spoken-tutorial.org/What_is_a_Spoken_Tutorial _][http://spoken-tutorial.org/What_is_a_Spoken_Tutorial Spoken][http://spoken-tutorial.org/What_is_a_Spoken_Tutorial _][http://spoken-tutorial.org/What_is_a_Spoken_Tutorial Tutorial]

* It summarizes the Spoken Tutorial project

* If you do not have good bandwidth, you can download and watch it

| style="border:0.035cm solid #000000;padding:0.097cm;"| To know more about the '''Spoken Tutorial''' project, watch the video available at the following link, that summarizes the project.Alternatively, you can download and watch it.

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| Slide 9'''Spoken Tutorial Workshops'''The Spoken Tutorial Project Team

* Conducts workshops using spoken tutorials

* Gives certificates for those who pass an online test

* For more details, please write to [mailto:contact@spoken-tutorial.org contact][mailto:contact@spoken-tutorial.org @][mailto:contact@spoken-tutorial.org spoken][mailto:contact@spoken-tutorial.org -][mailto:contact@spoken-tutorial.org tutorial][mailto:contact@spoken-tutorial.org .][mailto:contact@spoken-tutorial.org org]

| style="border:0.035cm solid #000000;padding:0.097cm;"| The Spoken Tutorial Project Team. Conducts workshops using '''spoken tutorials''' and gives certificates for those who pass an online test. For more details, please write to '''contact AT spoken HYPHEN tutorial DOT org.'''

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| Slide 10'''Acknowledgement'''

* Spoken Tutorial Project is a part of the Talk to a Teacher project

* It is supported by the National Mission on Education through ICT, MHRD, Government of India

* More information on this Mission is available at

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

| style="border:0.035cm solid #000000;padding:0.097cm;"| '''Spoken Tutorial '''Project is a part of the '''Talk to a Teacher''' project and is supported by the '''National Mission on Education through ICT, MHRD, Government of India. '''More information on this Mission is available at '''spoken HYPHEN tutorial DOT org SLASH NMEICT HYPHEN Intro'''

|-
| style="border:0.035cm solid #000000;padding:0.097cm;"| Slide 11'''About the contributor'''

* This tutorial has been contributed by '''TalentSprint'''
* '''www.talentsprint.com'''

* Thanks for joining

| style="border:0.035cm solid #000000;padding:0.097cm;"| This tutorial has been contributed by '''TalentSprint'''. Thanks for joining.

|}

@@ Line 21: / Line 21: @@
 '''Learning Outcomes'''
-| style="border:0.035cm solid #000000;padding:0.097cm;"| In this tutorial, you will learn about the various '''Numeric Operators in Java that are'''
+| style="border:0.035cm solid #000000;padding:0.097cm;"| In this tutorial, you will learn about the various   '''Arithmetic Operations ''' namely
-−
 '''Addition'''
@@ Line 43: / Line 42: @@
 '''JDK 1.6''' and
-'''Eclipse 3.7'''
+'''Eclipse 3.7'''.
-−
 |-
 | style="border:0.035cm solid #000000;padding:0.097cm;"| Slide 4
 '''Prerequisites'''
-| style="border:0.035cm solid #000000;padding:0.097cm;"| For this tutorial, you should have
+| style="border:0.035cm solid #000000;padding:0.097cm;"| To follow this tutorial you must have eclipse installed in your system
-'''Eclipse '''installed on your system and
+ and you must  '''know how to create, save and run a file in Eclipse'''.
-−
-should '''know how to create, save and run a file in Eclipse'''.
@@ Line 84: / Line 80: @@
 '''}'''
-| style="border:0.035cm solid #000000;padding:0.097cm;"| We have Eclipse IDE and the skeleton required for the rest of the code.
+| style="border:0.035cm solid #000000;padding:0.097cm;"|Here  We have Eclipse IDE and the skeleton required for the rest of the code.
@@ Line 100: / Line 96: @@
 '''int result<nowiki>;</nowiki>'''
-| style="border:0.035cm solid #000000;padding:0.097cm;"| We have created three variable.
+| style="border:0.035cm solid #000000;padding:0.097cm;"|'''int x = 5;'''
-'''x''' and '''y''' will behave as operands while '''result''' will store the output of two operands.
 |-
@@ Line 111: / Line 109: @@
 '''System.out.println(result);'''
-| style="border:0.035cm solid #000000;padding:0.097cm;"| Let us add them and print the result.
+| style="border:0.035cm solid #000000;padding:0.097cm;"| Let us add them and print the result.''' Result= x+y;''' system. out. println ''''in parantesis '''result''
-−
@@ Line 118: / Line 116: @@
 |-
 | style="border:0.035cm solid #000000;padding:0.176cm;"| '''Save''' and '''Run'''.
-| style="border:0.035cm solid #000000;padding:0.176cm;"| Now let us '''Run''' the code.
+| style="border:0.035cm solid #000000;padding:0.176cm;"|'Save it with ControlS and contron F11 to''' Run'''
-−
@@ Line 125: / Line 122: @@
 |-
 | style="border:0.035cm solid #000000;padding:0.176cm;"| Point to output.
-| style="border:0.035cm solid #000000;padding:0.176cm;"| As we can see, the result now has the sum of values in '''x '''and '''y.'''
+| style="border:0.035cm solid #000000;padding:0.176cm;"| We see, that the output of addition is stored and the value has been printed
 |-
 | style="border:0.035cm solid #000000;padding:0.176cm;"| Change '''x = 5 '''to '''x = 75''' and '''y = 10 '''to '''y = 15'''
-| style="border:0.035cm solid #000000;padding:0.176cm;"| Let us change the values now.
+| style="border:0.035cm solid #000000;padding:0.176cm;"| Now Let us change the values  .
+'''x=75''','''y = 15'''
-−
-So type 75 in place of 5
 |-
 | style="border:0.035cm solid #000000;padding:0.176cm;"| '''Save''' and '''Run'''.
-| style="border:0.035cm solid #000000;padding:0.176cm;"| '''Save''' and '''Run'''
+| style="border:0.035cm solid #000000;padding:0.176cm;"| '''Save''' it '''Run'''
 |-
 | style="border:0.035cm solid #000000;padding:0.097cm;"| Point to output
-| style="border:0.035cm solid #000000;padding:0.097cm;"| As we can see the output changes as we change the values.
+| style="border:0.035cm solid #000000;padding:0.097cm;"|  we   see the output has been  changes  accordingly
 |-

Java/C2/Arithmetic-Operations/English - Revision history

Sneha at 05:36, 8 May 2013

Sneha at 04:35, 8 May 2013

Chandrika: Created page with ''''Title of script''': Arithmetic Operations in Java '''Author''': TalentSprint '''Keywords: '''datatype, int, float, numerical data, arithmetic operations, operator precedence…'