How can I use this keyword in Salesforce? What's the main advantage of using it?

This keyword used to represent the current instance of the class.We use This keyword to differentiate between class instance variable and local variable.

Example:

public class ThisKeywordDemo{
    String str = ‘DefaultValue’;
    public ThisKeywordDemo(String str){
        System.debug(‘–local Value–‘+str);
        System.debug(‘–Current Instance Value–‘+this.str)
        this.str = str;
    }
}

The above example has One Instance Variable & One Local Variable or Method parameter with same name.

str = Refers parameter value.
this.str = Refers the current instance variable value.

To execute this class go to Developer Console, paste the below line then click execute.

ThisKeywordDemo thisExample = new ThisKeywordDemo('test This Keyword');

• This reply was modified 8 years, 5 months ago by  Ravi.