What Is Property in Salesforce Apex?

Hello Sanjana

Salesforce Apex Property is similar to a variable, they can validate data before a change is made; they can prompt an action when data is changed, such as altering the value of other member variables; or they can expose data that is retrieved from some other source, such as another class.

Thank you.

Hi Sanjana

An Apex property is similar to a variable; however, you can do additional things in your code to a property value before it is accessed or returned. Properties can be used to validate data before a change is made, to prompt an action when data is changed (such as altering the value of other member variables), or to expose data that is retrieved from some other source (such as another class).

Property definitions include one or two code blocks, representing a get accessor and a set accessor:

• The code in a get accessor executes when the property is read.
• The code in a set accessor executes when the property is assigned a new value.

If a property has only a get accessor, it is considered read only. If a property has only a set accessor, it is considered write only. A property with both accessors is considered read-write.

Hope this may help you.

Thankyou!

Hello,

When u used property u can control get, set, access.

In this example, if accountList = null and you try to get this value, at first accountList queried and return you list of account.
`
public Account[] accountList {
get {
if (accountList == null) {
accountList = [SELECT Id, Name FROM Account];
}

return accountList;
}
}
`

Tracking value changes. In this example when you set a or b value, sum property recalculate automaticaly.
`
public Integer sum {
get;
set;
}

public Integer a {
get {
if (a == null) a = 0;
return 0;
}

set {
sum = a + b;
}
}

public Integer b {
get {
if (b == null) b = 0;
}

set {
sum = a + b;
}
}
`
and more other examples.

Thanks.