Which of the following are true about class data types? Click all that apply. Group of answer choices They can also be called reference data types They can be declared as empty They cannot be used in print statments Strings are a class data type

Answer 1

Let's evaluate each statement regarding class data types:

1. They can also be called reference data types: True. In many programming languages (like Java, C#, etc.), class types are often referred to as reference types because they hold references to the actual objects in memory.

2. They can be declared as empty: True. In programming, you can often declare a class type variable without instantiating it (e.g., MyClass obj; in Java, where obj is declared but not yet assigned a specific object, making it effectively "empty" or null).

3. They cannot be used in print statements: False. Class data types can definitely be used in print statements, as long as the class has a toString() method (or the equivalent) defined that specifies how to convert the object to a string representation.

4. Strings are a class data type: True. In many programming languages like Java, strings are indeed an object that belongs to the class String, and therefore are considered a class data type.

So, the true statements are:

• They can also be called reference data types
• They can be declared as empty
• Strings are a class data type