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Lesson: 06 List of sObjects

Notes

Lists can contain sObjects among other types of elements. Lists of sObjects can be used for bulk processing of data.

To declare a list of sObjects, use the List keyword followed by the sObject type within <> characters.

List<Account> acList = new List<Account>();

List<Account> acList = [SELECT Id, Name FROM Account];

List<Account> acList = [SELECT Id, Name FROM Account LIMIT 10];

List<Contact> conList = new List<Contact>();

Contact con = new Contact(Lastname ='Scott')];

conList.add(con);

conList.get(0);

conList.get(0).lastname;

You can bulk-process a list of sObjects by passing a list to the DML operation.

List<Account> acList = new List<Account>();

Account ac1 = new Account(Name='New Account 01');
Account ac2 = new Account(Name='New Account 02');
Account ac3 = new Account(Name='New Account 03');

acList.add(ac1);
acList.add(ac2);
acList.add(ac3);

insert acList;

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