How do I add to a list in Apex?

How do I add to a list in Apex?

List Methods

1. add(listElement) Adds an element to the end of the list.
2. add(index, listElement) Inserts an element into the list at the specified index position.
3. addAll(fromList)
4. addAll(fromSet)
5. clear()
6. clone()
7. contains(listElement)
8. deepClone(preserveId, preserveReadonlyTimestamps, preserveAutonumber)

How do I add a list to a list in Salesforce?

You can add list elements from one list to another by simply calling the addAll() method. eg. List accounts1 = new List{a,b,c}; List accounts2 = new List{d,e,f};

How to create apex class that returns account objects?

Create an Apex class named AccountUtils and include a static method named accountsByState that accepts a state abbreviation as a string and returns a List of Account objects The method must return the ID and name of all Account objects that match the BillingState for the state abbreviation passed to the method

How do you create a list in apex?

To declare a list, use the List keyword followed by the primitive data, sObject, nested list, map, or set type within <> characters. For example: To access elements in a list, use the List methods provided by Apex. For example: For more information, including a complete list of all supported methods, see List Class.

What are the types of collections in apex?

A list is an ordered collection of elements that are distinguished by their indices. List elements can be of any data type—primitive types, collections, sObjects, user-defined types, and built-in Apex types.

How does a list grow in Salesforce apex?

Even though the size of the previous String array is defined as one element (the number between the brackets in new String[1] ), lists are elastic and can grow as needed provided that you use the List add method to add new elements. For example, you can add two or more elements to the colors list.