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  • chaitanya nandamuri 2
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2 replies

Am new to salesforce Trying to Understand extension_controller's constructor

//This is an extension controller class
public class Speaker_conf_extension {

     private final Speaker__c speaker; // speaker__c is custom object and standard controller which is using This(Speaker_conf_extension)                                                                           //extension class
     
      private ApexPages.StandardController sController;
    
    public Speaker_conf_extension(ApexPages.StandardController scontroller) {
    
    this.speaker= (speaker__C)scontroller.getRecord();
    this.scontroller = scontroller;
    
    }
public PageReference save() {
..................................
...............................
...............
return null;
}

This extension_controller is trying to over ride Save button and insert an InputFile field to upload image.
I didn't understand what the  constructor of extension_controller is doing . Please explain the behaviour ,Thank you