To perform arithmetic operations (VF)

<apex:page sidebar="false" controller="arthematic">

<!-- We should create form for inserting data into the text fields-->

<apex:form >

<!-- value atrribure in inputtext is used to set and get the values i.e date enterd in inputbox to controller & controller to vf page-->

<b>Enter value1:</b>&nbsp;&nbsp;<apex:inputText value="{!num1}"/><br/><br/>

<b>Enter value2:</b>&nbsp;&nbsp;<apex:inputText value="{!num2}"/><br/><br/>

<!--commandButton is used to create the button-->

<apex:commandButton value="Sum"/>&nbsp;

<!-- outputText to show the output-->

<apex:outputText value="{!sum}"/><br/><br/>

<apex:commandButton value="Diff"/>&nbsp;

<apex:outputText value="{!diff}"/><br/><br/>

<apex:commandButton value="Mul"/>&nbsp;

<apex:outputText value="{!mul}"/><br/><br/>

</apex:form>

</apex:page>

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APEX CODE

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To perform arithmetic operations (APEX)

public class arthematic { 

   

    public Integer num1 { get; set; }

    public Integer num2 { get; set; }

   

    public Integer sum { set; }//If we take inputbox then only we need this, if use outputtext this datamember is not required

   

    public Integer diff { set; }

   

    public Integer mul { set; }

   

    public Integer div { set; }    

  

    public PageReference addition() {

   

        //return null;

        return Page.arthematic;

    }

   

    public arthematic() {

        num1 = num2 = 0;       

    }   

   

   //Addition

    public Integer getSum() {

        //return num1 + num2;       

        return add();

    }   

    public Integer add() {       

        return num1 + num2;

    }

   

    //Subtraction

    public Integer getDiff() {

        //return num1 + num2;       

        return diff();

    }   

    public Integer diff() {       

        return num1 - num2;

    }

   

    //Multiplication

    public Integer getMul() {

        //return num1 + num2;       

        return mul();

    }   

    public Integer mul() {       

        return num1 * num2;

    }

   

    //Division

    public Integer getDiv() {

        //return num1 + num2;       

        return div();

    }   

    public Integer div() {       

        return num1 / num2;

    }/*//<apex:commandButton value="div"/>

//<apex:outputText value="{!div}"/><br></br><br></br>*/ //Getting Exception

   

    }

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VF CODE

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Visual Force Basic code

<apex:page >

  <!-- Begin Default Content REMOVE THIS -->

  <h1>Congratulations</h1>

  This is your new Page

  <!-- End Default Content REMOVE THIS -->

</apex:page>


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

<apex:page showHeader="True" sidebar="False" tabStyle="Student__c">

  <!-- showHeader is to enable or disable the Heading part of the Page -->

  <!-- sidebar is to enable or disable the sidebar of the Page -->

  <h1>Welcome to {!$User.Username} Page!</h1>

    <!--    {!} is used to display the dynamic content of the page -->

    <!-- To create a seperate page block -->

  <apex:pageBlock title="Primary" tabStyle="Project__c" >

   <apex:pageBlockSection >

   <h2>Page block section One </h2>

    <apex:pageBlockSectionItem >Srinu</apex:pageBlockSectionItem>

    <apex:pageBlockSectionItem >Somu</apex:pageBlockSectionItem>

    <apex:pageBlockSectionItem >Vasu</apex:pageBlockSectionItem>

    <apex:pageBlockSectionItem >Gopi</apex:pageBlockSectionItem>

   </apex:pageBlockSection>

   <h2>Page block section Two </h2>

   <apex:pageBlockSection >

    <apex:pageBlockSectionItem >Srinu</apex:pageBlockSectionItem>

    <apex:pageBlockSectionItem >Somu</apex:pageBlockSectionItem>

    <apex:pageBlockSectionItem >Vasu</apex:pageBlockSectionItem>

    <apex:pageBlockSectionItem >Gopi</apex:pageBlockSectionItem>

   </apex:pageBlockSection> 

  </apex:pageBlock>

    

  <apex:pageBlock title="Secondary" >My Second Block</apex:pageBlock>

  <apex:pageBlock title="Third" tabStyle="Project__c" >My Third Block</apex:pageBlock>

    <h1>Welcome to Srinu Page</h1>

 

  <!-- End Default Content REMOVE THIS -->

</apex:page>