What is data type in Apex?

What is data type in Apex?

Apex supports the following data types − Primitive (Integer, Double, Long, Date, Datetime, String, ID, or Boolean) Collections (Lists, Sets and Maps) (To be covered in Chapter 6) sObject. Enums.

What are the available data types in Apex programming?

Salesforce Apex Primitive datatypes are, Blob, Boolean, Date, DateTime, Decimal, Double, ID, Integer, Long, Object, String and Time. Reading this article, you can learn and test the Apex primitive datatypes in SalesForce.

How do I change data type in Apex?

1 Answer

1. create a new column.
2. update table and set new column to numeric value of the old column.
3. drop the old column.
4. rename new column to the “old/original” name.

How are primitive data types passed in apex?

All primitive data types are passed by value. All Apex variables, whether they’re class member variables or method variables, are initialized to null. Make sure that you initialize your variables to appropriate values before using them. For example, initialize a Boolean variable to false.

How to get the type of a field in apex?

I need to get the type (or data type) of a field (like if it is a date or integer for example) in apex. I only have the name (api) of the object and the name of the field.

How many types of variables are there in apex?

There are five basic type of variables. Basically, it gives answer to what kind of information are we going to store. So lets begin understanding datatypes. Choose most appropriate data type. You cannot add two numbers if data type are string. It is a number without any decimal points.

Can you instantiate currency in any type in apex?

You cannot instantiate Currency in any other type of Apex. For more information on the AnyType data type, see Field Types in the Object Reference for Salesforce. In API version 16 (Summer ’09) and later, Apex uses the higher-precision Decimal data type in certain types such as currency.