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List Array Notation in APEX
What You’ll Learn
- What Is List Array Notation?
Topics
- Apex Data Types
- Integer Data Type in APEX
- Floating Point Data Type in APEX
- String Data Type in APEX
- Date Datatypes in APEX
- Time and DateTime Data Types in APEX
- Boolean Datatype in Salesforce
- ID & Blob Datatypes in APEX
- What is the Rule of Conversions in Apex?
- Enums in APEX
- sObjects in Salesforce
- Generic sObjects in Salesforce
- Collections in APEX
- Lists in APEX
- List Array Notation in APEX
- Lists Initialization in APEX
- Nested Lists in APEX
- Sets in APEX
- Sets Initialization And Methods
- Maps in APEX
- Map Initialization Methods in APEX
- Operators in Apex and Their Types
- Shorthand Operator
- Equality Operator
- Relational Operators(<,>,<=,>=)
List Array Notation in APEX
Array notation is a notation where a list’s elements are referenced by enclosing the index number in square brackets after the list’s name. Developers comfortable with Array notation can also use it while using Lists. Array and List syntax are often used interchangeably.
When using one-dimensional lists of primitives or objects, you can also use more traditional array notation to declare and reference list elements. For example, you can declare a one-dimensional list of primitives or objects by following the data type name with the [] characters.
Syntax Of List Array Notation
String[] nameList = new String[4];
//or
String[] nameList2 = new List();
//or
List nameList3 = new String[4];
// Set values for 0, 1, 2 indices
nameList[0] = 'Bhavna';
nameList[1] = 'Bhavya';
nameList[2] = 'Swati';
// Size of the list, which is always an integer value
Integer listSize = nameList.size();
// Accessing the 2nd element in the list, denoted by index 1 System.debug(nameList[1]); // ‘Bhavna’
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