Working with Local Classes

1.

A functional method must have

Choose the correct answer.

Exactly one importing parameter

Exactly one exporting parameter

No changing parameters

Exactly one returning parameter

2.

You have defined a class containing instance attributes and static attributes. You have also declared a reference variable but not yet created an instance of the class. Which components of the class can you access at this point, and how?

Choose the correct answer.

Instance components using the reference variable.

Instance components using the name of the class.

Static components using the reference variable.

Static components using the name of the class.

3.

Which of the following signature elements may an instance constructor have?

There are two correct answers.

Importing parameters

Exporting parameters

Changing parameters

Exceptions

4.

A class my_class contains the public static method my_method. What is the correct code to call this method?

Choose the correct answer.

my_class->my_method().

my_class=>my_method().

my_class->my_method( ).

my_class=>my_method( ).

5.

In which order do you define the visibility sections of a class?

Choose the correct answer.

PUBLIC SECTION. PROTECTED SECTION. PRIVATE SECTION.

PRIVATE SECTION. PROTECTED SECTION. PUBLIC SECTION.

It doesn't matter.

6.

You have declared two reference variables, ref1 and ref2. ref1 points to an object. You now execute the statement ref2 = ref1. What happens?

Choose the correct answer.

The ABAP system creates a copy of the object to which ref1 is pointing and assigns its address to ref2. There are now two objects.

The ABAP system assigns the address of the object to which ref1is pointing to reference variable ref2. There is only one object.

7.

Your class contains a public instance attribute attr. How could you ensure that its value can only be changed within the class?

There are two correct answers.

Make it a private attribute.

Convert it into a constant.

Leave it in the public section but use the READ-ONLY addition.

Move it to a different local class.

8.

The static constructor is executed when the class is addressed for the first time. When might this be?

There are two correct answers.

At the beginning of the program.

When you call a static method of the class.

When you instantiate the class.

Knowledge quiz

A functional method must have

You have defined a class containing instance attributes and static attributes. You have also declared a reference variable but not yet created an instance of the class. Which components of the class can you access at this point, and how?

Which of the following signature elements may an instance constructor have?

A class my_class contains the public static method my_method. What is the correct code to call this method?

In which order do you define the visibility sections of a class?

You have declared two reference variables, ref1 and ref2. ref1 points to an object. You now execute the statement ref2 = ref1. What happens?

Your class contains a public instance attribute attr. How could you ensure that its value can only be changed within the class?

The static constructor is executed when the class is addressed for the first time. When might this be?