Decodeforce

Integer variables in apex

What is an integer variable?

In apex programming Integer variables are used to store numbers. Integers can hold only the whole numbers and they cannot hold decimal values.

Integer variables in Apex can be used to:

  • Store a numeric value, e.g the number of orders.
  • Store constant values.
  • To compare numeric values.
  • Run business rules certain times, e.g run a for loop x times.

Avoid using integers in the following scenarios:

  • Store decimal/fractional values, e.g currency.
  • Percentage calculations.
  • Boolean values. e.g true or false.
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Integers in Apex

How to declare an Integer?

You can declare a integer using the Integer data type and assign a value.

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In the above example:

  • The Integer keyword is used to declare an integer variable in apex.
  • The variable numberOfOrders is used to store an integer number.
  • The value 10 is assigned to the variable numberOfOrders.

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