답변 2개
In Salesforce Apex programming, there is a distinction between the String class and the String data type. Here's an explanation of each:
- String Data Type: The String data type is a primitive data type used to store text values. It represents a sequence of characters. When you declare a variable of the String data type, you are essentially creating a space to store a text value. For example:
apexCopyString myString = 'Hello, World!';
In this case, myString is a variable of the String data type, and it holds the text value 'Hello, World!'.
- String Class: The String class is part of the Apex standard classes provided by Salesforce. It is a collection of methods and properties that allow you to perform various operations on string values. The String class provides a rich set of functionalities, such as concatenation, substring extraction, character replacement, case conversion, and more.
When you create a new instance of the String class, you are essentially creating a String object with its own set of methods and properties. For example:
apexCopyString myString = 'Hello, World!';
Integer length = myString.length(); // Using the length() method of the String class
In this example, myString is still a variable of the String data type, but we are also using the length() method of the String class to retrieve the length of the string stored in myString.
Hope it is clear
