Frage 1
Frage
A progran needs to gain eecess to the public attributes of
class lcl_course. Identi(y the statenents that are valid.
class lcl_course definition.
public section.
data: name(15) type c value 'ABAPObjects101'.
class-data price type p value 100.
private section.
data: category(10) type C value 'Objects'.
endclass.
data: course1 type ref to lcl_course,
course_name type string,
course_price type p,
course_category type string.
**INSTANTIATION OMITTED **
Antworten
-
course_name = name
(More than one answer is correct)
-
name can not be accessed unless course1 is instantiated
-
course_name = course1=>name.
-
course_name = course1->name.
-
course_price = lcl_course=>price.
Frage 2
Frage
The concept of restricting direct access to data via
hidden interna! processes is best represented by "wich
term"
Antworten
-
Instantiation
-
Encapsulation
-
Inheritance
-
Polymorphism
Frage 3
Frage
Identify the characteristics of the self reference ME
Antworten
-
Self references allow an object to give other objects
a reference to it.
-
The self-reference ME can be used to access
individual components
-
All answers are correct
-
None of the answers are correct
-
The reference ME can be used to determine the
dynamic type of the reference variable in the
debugger
Frage 4
Frage
The syntax for instance method specification is
(More than one answer is correct)
Antworten
-
Call method Objref=>method
-
Call Method->Objref
-
Call method (from within another instance method)
-
Call method Objref->method
Frage 5
Frage
what syntax provides access to individual components of a
class within the class
(More than one answer is correct)
Frage 6
Frage
Identify the ABAP OO Event signature protocols
(More than one answer is correct)
Antworten
-
Events can only have exporting Parameters
-
Exporting parameters can only be passed by
reference
-
Exporting parameters can only be passed by value
-
Events can only have importing Parameters
Frage 7
Frage
Mark the item that is NOT true about the handler table
Antworten
-
Event handler methods are called in the sequence that they were registered in the handler table
-
There is a separate handler table for every object that has defined events
-
Registered Methods in the handler table can only be triggered by RAISE EVENT i.e. not by CALL METHOD
-
A single SET Handler command can be used to register multiple handler methods in the handler table
Frage 8
Frage
In the following nethod, what other parameters are allowed
CLASS lcl_course DEFINITION.
PUBLIC SECTION.
METHODS: get_course_name
IMPORTING im_name type string
Returning value(student_count) type I
.
ENDCLASS.
Antworten
-
Exceptions
-
Exporting
-
Changing
-
Receiving
Frage 9
Frage
What inplications ex.ist when private conponents of a class
are chanaged
Antworten
-
Users of the private components must change their
interface
-
Any programs accessing the class must also change
-
Programs are insulated from change
-
None of the answers are correct
Frage 10
Frage
Finish the following sentence so that it is TRUE.
Static Components in an inheritance relationship.......
(More than one answer is correct)
Frage 11
Frage
Choose the correct redefinition of the superclass nethod
in class lcl_super_course
*Super Class Definition
CLASS lcl_super_course DEFINITION.
PUBLIC SECTION.
METHODS: get_course_name IMPORTING im_name type s
tring.
ENDCLASS.
*Sub Class Method ReDefinition
A
CLASS lcl_sub_course DEFINITION INHERITING
FROM lcl_super_course.
PRIVATE SECTION.
METHODS: get_course_name IMPORTING im_name type s
tring.
ENDCLASS.
B
CLASS lcl_sub_course DEFINITION INHERITING
FROM lcl_super_course.
PUBLIC SECTION.
METHODS: get_course_name IMPORTING im_name type s
tring.
ENDCLASS.
CLASS lcl_sub_course DEFINITION INHERITING
FROM lcl_super_course.
PRIVATE SECTION.
METHODS: get_course_name REDEFINITION.
ENDCLASS.
CLASS lcl_sub_course DEFINITION INHERITING
FROM lcl_super_course.
PUBLIC SECTION.
METHODS: get_course_name REDEFINITION.
ENDCLASS.
Antworten
-
SubClass Definition B
-
SubClass Definition A
-
SubClass Definition C
-
SubClass Definition D
Frage 12
Frage
In the context or Triggering and Handling or Events, mark
those which apply
(More than one answer is correct)
Antworten
-
Events can be triggered with the “Trigger Event”
command
-
Methods must be registered to an event in order to
be called when the event is triggered
-
An event is defined in the Implementation of a Class
-
Event Triggering using “Raise Event” can be issued
in a method
Frage 13
Frage
An inherited class:
(More than one answer is correct)
Antworten
-
can remove superclasss components
-
can add components over and above the superclass
-
can access the inherited private components
-
can redefine the public methods of the superclass
-
can not access the protected components
Frage 14
Frage
What is contained in a class that does nor exist in an interface
Antworten
-
implementation
-
attributes
-
method
-
definition
Frage 15
Frage
How can a program access private attributes of an object
Antworten
-
By methods of a different object within the same
Program
-
Only by methods of the specific object itself
-
By methods of a different instance of the same
object
-
From outside the class
Frage 16
Frage
Which of the following answers characterize ABAP 00 events
(More than one answer is correct)
Antworten
-
Classes subscribe to events
-
Classes trigger events
-
Events subscribe to classes
-
Methods subscribe to classes
-
Start-of-selection is an OO event
Frage 17
Frage
Mark the items that characterize some primary differences
between objects and functions
(More than one answer is correct)
Antworten
-
Functions allow multiple instances of the same data
objects. Objects only allow single instances of data
-
Calling a function loads the entire function group
implicitly into memory whereas instances of an
object are generated explicitly when an object is
created
-
A program can only work with a single instance of
the same function group versus a program can
access several instances of the same object
-
A program can directly access data in the function
group while access to data in an object is not
possible
Frage 18
Frage
A public attribute 'color' is added to a superclass. A
subclass already has the same attribute 'color'. What is
the outcome?
(More than one answer is correct)
Antworten
-
The subclass is invalidated
-
A syntax message will occur
-
The superclass is invalidated
-
A runtime error will occur
Frage 19
Frage
Where would the conponents of a class be defined
Antworten
-
Logic component of a program
-
Implementation part of a class
-
Data Component of a program
-
Definition part of Class
Frage 20
Frage
Select the term used for Classes that can implement the same method differently
Antworten
-
polymorphism
-
inheritance
-
encapsulation
-
casting
-
instantiation
Frage 21
Frage
What are the rules for event parameters
(More than one answer is correct)
Antworten
-
EXPORTING Parameters for events can only be
passed by value
-
EXPORTING Parameters for events can only be
passed by reference
-
Events can only have EXPORTING parameters
-
Events also allow RETURNING parameters
Frage 22
Frage
When redefining methods in a subclass what is allowed?
(More than one answer is correct)
Antworten
-
Code can be changed
-
Only Instance methods
-
Signature can be changed
-
Private Static methods
Frage 23
Frage
define Polynorphisn
(More than one answer is correct)
Antworten
-
it’s a characteristic when methods of the same class
react differently to the same method call
-
it’s one of the main strengths of inheritance
-
it’s a characteristic when methods from different
classes react differently to the same interface
-
the same method is implemented in different ways
by redefining the method in subclasses
-
it’s a characteristic when objects from different
classes react differently to the same method call
Frage 24
Frage
What are the methods of a class implemented
Frage 25
Frage
Your proera" has re¡i.stered severa! handler "ethods. How
does the pro¡ra" know what "ethods are available for
e>eecution when an event is tr i,a:a;ered
your program has registered a several handler method.
how does the program know what methos are available for execution when an event is triggered
Antworten
-
the system looks for registered handler methods In
the registry table and processes those that are
registered for the event
-
the system looks for registered handler methods In
the event handler internal table and processes
those that are registered for the event
-
The methods defined in the Class Definition listen
for raised events and respond when an event is
triggered
-
It is determined by the RAISE Event command
Frage 26
Frage
A progran needs to gain access to the public attributes of
class lcl_course. Identify the statenents that are valid.
class lcl_course definition.
public section.
data: name(15) type c value 'ABAPObjects101
'.
class-data price type p value 100.
private section.
data: category(10) type C value 'Objects'.
endclass.
data: course1 type ref to lcl_course,
course_name type string,
course_price type p,
course_category type string.
Create Object course1.
(More than one answer is correct)
Antworten
-
course_price = lcl_course=>price.
-
course_name = course1->name.
-
course_name = course1=>name.
-
course_name = name
-
course_price = lcl_course->price.
Frage 27
Frage
Class A provides (riendship to Class 8. Class 8 provides
friendship to Class C. Identify the valid friend relationship.
(More than one answer is correct)
Antworten
-
C is friend of A
-
C is friend of B
-
A is friend of B and C
-
B and C are friends of A
-
B is friend of A
Frage 28
Frage
Pick the syntax for a functional nethod with only 1 parameter
(More than one answer is correct)
Frage 29
Frage
In object orientation, the term USER includes
Frage 30
Frage
Initializing an object in a subclass requires that the
constructor or the superclass is first called. Identifiy the
correct siyntax.
Antworten
-
Call Method Super Constructor
-
Call Method Super-> Constructor
-
Call Method Constructor
-
Call Method Constructor-> Super
Frage 31
Frage
Identify the valid statenents that will write out the
Static Attributes in the following code
class lcl_course definition.
public section.
data: name(15) type c value 'ABAPObjects101'.
class-data price type p value 100.
private section.
data: category(10) type C value 'Objects'.
endclass.
data: course1 type ref to lcl_course,
course_name type string,
course_price type p,
course_category type string.
(More than one answer is correct)
Frage 32
Frage
The syntax for static method specification
Frage 33
Frage
what triggers an event
Frage 34
Frage
what can be said about the visibility of attributes in the
following ina code
CLASS lcl_course DEFINITION.
PUBLIC SECTION.
Data: name type string.
PRIVATE SECTION.
Data: price type course-price.
ENDCLASS.
(More than one answer is correct)
Antworten
-
price is protected from outside access
-
price is available to methods inside the class
-
name is available to methods only inside the class
-
name is protected from outside access
Frage 35
Frage
mark the operator used to widen cast of a class
Frage 36
Frage
Identify the statements that best describe the visibility
of classes
(More than one answer is correct)
Antworten
-
Local Classes are available only to the program
where the class is defined
-
Global classes are centrally available to all ABAP
programs
-
Local Classes are available only to programs in the
same development class
-
Global Classes are available only from programs
belonging to the same development class
Frage 37
Frage
Changing the view of an instance of a class with "ore
details is referred to as
Antworten
-
narrowing cast
-
up cast
-
widening cast
-
dynamic referencing
Frage 38
Frage
what happens when the Set Handler Command is executed
Frage 39
Frage
mark the items that characterize the methods of a Class
(More than one answer is correct)
Antworten
-
Can change the state of an object
-
Can access only public attributes in their class
-
Can access all attributes in their class
-
Can be defined with a parameter interface
-
Only pass return codes to the calling program
Frage 40
Frage
Refer to the following code and indicate which statenents are true
Data: cl_container type ref to cl_gui_custom_container,
cl_grid type ref to cl_gui_alv_grid.
(More than one answer is correct)
Antworten
-
cl_grid points to the object that communicates with the ALV
grid control
-
cl_grid points to the object that communicates with the
container control
-
cl_container points to the object that communicates with the
ALV grid control
-
cl_container points to the object that communicates with the
container control
Frage 41
Frage
Local Class lcl_course has been clefined in a progran
belonging to developnent class ZCL. wlhat is the key entry
in the repository table TADIR
Frage 42
Frage
A MOVE_CAST_ERROR runtine error just occurred. Identify
the cause.
Antworten
-
Super class and subclass both point to an instance
of the same class type
-
Casting a super class to a subclass when
superclass does not point to an instance of the
subclass type
-
Subclass reference variable correpsonds to the
superclass reference variable
-
Super class method is called from the subclass
Frage 43
Frage
Refer to the following code and Select the VRLID method
call
Class lcl_course definition.
Public section.
data: course_name(12) type c.
methods: display_price
importing im_course_name type string.
Private section.
Data: price type P value 100.
constants: c_objects101(10) type c value 'OBJECTS
101'.
endclass.
class lcl_course implementation.
method display_price.
course_name = im_course_name.
If course_name = c_objects101.
Write: price.
Endif.
endmethod.
endclass.
Data obj_course type ref to lcl_course.
start-of-selection.
create object obj_course.
Antworten
-
Call method obj_course->display_price exporting
im_course_name = 'OBJECTS101'.
-
Call method obj_course->display_price importing
im_course_name = 'OBJECTS101'.
-
Call method obj_course->display_price exporting
course_name = 'OBJECTS101'.
-
Call method obj_course->display_price exporting
im_course_name = c_objects101.
Frage 44
Frage
Using example code below, choose the correct syntax for
the redefined method
Class lcl_car definition.
Public Section.
method calc_speed importing im_distance type ty_dist
.
End Class.
Antworten
-
Method calc_speed importing im_distance.
-
Method calc_speed Redefinition.
-
Method calc_speed importing im_distance Redefinition
-
Method calc_speed Redefinition importing im_distance type
ty_dist.
Frage 45
Frage
what can be said about the lifeti,e of an object
Antworten
-
All answers are correct
-
A
an object exists for as long as it is being used in the
program
-
An object exists as long as at least one reference
points to it
-
An object exists as long as at least one method of
the object is registered as an event handler.
Frage 46
Frage
Global Class cl_course has been defined using the class
builder. The developnent class is ZCL. Mhat is the ke~
entr~ in the repositoru table TAOIR
Frage 47
Frage
what statenent will request memory to be allocated to an
object
Antworten
-
Call Constructor
-
Create Object
-
Call Method
-
Create Constructor
Frage 48
Frage
Refer to the followina code and identify the statenents that are TRUE
(More than one answer is correct)
CLASS lcl_course DEFINITION.
PUBLIC SECTION.
METHODS: get_course_name IMPORTING im_name type s
tring.
CLASS-METHODS: list_prices_and_discounts.
ENDCLASS.
CLASS lcl_course IMPLEMENTATION.
METHOD get_course_name.
ENDMETHOD.
METHOD list_prices_and_discounts.
ENDMETHOD.
ENDCLASS.
Data: course1 type ref to lcl_course,
course2 type ref to lcl_course.
Start-of-selection.
Create object course1.
Course2 = course1.
Antworten
-
method list_prices_and_discounts is a static method
-
Method list_prices_and_discounts can only be called once
-
list_prices_and_discounts is a instance method
-
Memory is reserved for 2 instances of lcl_course
-
Only one instance of method get_course_name exists
-
Only one instance of method list_prices_and_discounts
exists
Frage 49
Frage
Identify the Characteristics of a final Class
Frage 50
Frage
Usine the UML modeling language for ABAP 00 desing refer
to the follow.ine and indicate .icate the visibity of the componets
-------------------
| cl_myclass |
-------------------
| +city |
| #address |
|-----------------|
| + get_city() |
| - display_addr()|
| |
|-----------------|
(More than one answer is correct)
Antworten
-
get_city is a public attribute
-
address is protected attribute
-
display_address is a public method
-
display_address is a static public method
-
display_address is a private method
-
city is a public attribute
Frage 51
Frage
Identify the behaviors of Abstract Classes.
(More than one answer is correct)
Antworten
-
Methods can only be implemented in the subclass
-
Can only be implemented through an Interface
-
Cannot be instantiated
-
Methods can not be implemented in the subclass
Frage 52
Frage
what is possible uith a subclass in an inheritance
relationship to the superclass
(More than one answer is correct)
Antworten
-
The subclass can remove components of the
superclass
-
can add new components to the subclass
-
can provide inherited methods with new
implementations (redefinition)
-
inherits all the characteristics of the superclass
-
Components defined in the superclass are not
present in the subclass unless they are explicitly
defined in the definition of the subclass
Frage 53
Frage
In the context of polmorphisn and interfaces, mark the
item that is NOT true
Antworten
-
the user is protected from the actual
implementations
-
interfaces describe the point of contact of a class
-
interfaces contain their own implementation part
-
a class can implement any number of interfaces
Frage 54
Frage
Select the answers that apply to static methods and
instance methods
(More than one answer is correct)
Antworten
-
Instance methods MUST be addressed by object ref
after instantiation
-
Static methods MUST be addressed by object
reference after instantiation
-
Instance methods MUST be addressed by class
name
-
Static methods MUST be addressed by class_name
even when object is instantiated
Frage 55
Frage
Identify the valid rule when calling public methods fron
within the class
Antworten
-
When calling a static method, the class name is
required
-
When calling an instance method, the => operator is
still required
-
When calling a static method, the class name can
be omitted
-
Private methods can not call public methods
Frage 56
Frage
where is the visibility of class components defined
Antworten
-
Object Instance
-
Class Methods
-
Class Implementation
-
Class Definition
Frage 57
Frage
Identify the one addition that is not part of the
interface of a method
Antworten
-
Result
-
Exception
-
Importing
-
Returning
Frage 58
Frage
which statenent will create an instance of a class
Antworten
-
Class my_class Definition
-
Data: my_object TYPE REF TO my_class
-
Create Object my_object
-
Class my_class Implementation
Frage 59
Frage
Identify the line that contains the valid use of the
READ-ONLY additon
class lcl_course definition.
10 public section.
20 Data: Price(3) type p decimals 2
value 100 READ-ONLY.
30 Types: type_category(15) type C READ-ONLY.
40 Constants: write_position type I value 10 READONLY.
50 private section.
60 data: category(15) type C READ-ONLY,
70 class-data: course_count type I READ-ONLY.
endclass.
Frage 60
Frage
What mechanisn is used to define common components of
different classes in one place
Antworten
-
Create Object
-
Class Definition
-
Interface
-
Raise Event
Frage 61
Frage
what is the only component that is implenented in the
implenentation part ora class
Antworten
-
Method
-
Attribute
-
Object
-
Interface
-
Event
Frage 62
Frage
In the context of relationshlp between Super and Sub
classes, identify the statenents which apply
(More than one answer is correct)
Antworten
-
Subclass does not know it’s superclass
-
A subclass is a specialization of a superclass
-
A
change in a superclass does not automatically get
realized in the subclass
-
Superclass does not know its subclasses
-
A superclass is a specialization of a subclass
Frage 63
Frage
Identify the requirenents that deternine when an object gets deleted by garbage collection
(More than one answer is correct)
Antworten
-
When all active objects are marked
-
When none of its methods are registered as event handlers
-
When objects can no longer be addressed from
main memory
-
When there are no more references pointing to an
object
Frage 64
Frage
How do you call the method in a superclass that has the
same name as a redefined method in the subclass?
Antworten
-
Call Method Superclass-> mymetho
-
Call Method Super-> mymethod.
-
Call Method mymethod.
-
You can't . Only the redefined method can be called
Frage 65
Frage
mark the invalid attribute definition
class lcl_course definition.
10 public section.
20 Data: school(20) type c,
30 Supervisor type string value ‘ADAMS’,
40 Price(3) type p decimals 2 value 100 REA
D-ONLY.
50 types: type_category(15) type c,
60 type_name(10) type c.
70 constants: write_position type i value 10.
80 class-data: course_count type i.
90 private section.
100 data: category(15) type c,
110 name(10) type c.
120 courseid like mara-matnr.
endclass.
Antworten
-
30,120
-
30,80
-
40,70
-
70,80
-
40, 120
Frage 66
Frage
What is true about classes and objects in Object Oriented ABAP
(More than one answer is correct)
Antworten
-
Classes are an instance of an object
-
Objects can change their class
-
Class is a template for an object
-
Objects are an instance of a class
Frage 67
Frage
Identify the statenent about Global Classes that is NOT true
Antworten
-
Class Builder can be used to test global classes
-
A method to be transported is identified in transport
organiser as LIMU METH
-
Programs that are available to Global Classes must
be associated in Class Builder
-
Global classes are stored in TADIR with key R3TR
CLAS
-
Global classes are stored in TADIR with key R3TR
CLAS