QUESTION 4: Object Orientation (a) Given the code for the Base, A, and B classes as well as the provided main method: 1| public class Base{ public void doSomething() {System.out.println("Base");} 3 } 4 public class A extends Base{ @Override public void doSomething() {System.out.println("Class A");} 7 } 8 public class B extends Base{ @Override public void doSomething() {System.out.println("Class B");} 6. 9. 10 11 } 12 public static void main(String[] args) { ArrayList objects = new ArrayList<>(); Base objB = new B(); Base obja = new A(); objects.add(objA); objects.add(objB); for(Base o : objects) { o.doSomething(); } 13 14 15 16 17 18 19 20 21 } Identify four (4) Java programming constructs/principles present in the code and list the line number that it is found at. For example: Line 99 - Aggregation (b) Write down what the output of the program will be.

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QUESTION 4: Object Orientation
(a) Given the code for the Base, A, and B classes as well as the provided main method:
1| public class Base{
public void doSomething() {System.out.println("Base");}
3 }
4 public class A extends Base{
@Override
public void doSomething() {System.out.println("Class A");}
7 }
8 public class B extends Base{
@Override
public void doSomething() {System.out.println("Class B");}
10
11 }
12 public static void main(String[] args) {
ArrayList<Base> objects = new ArrayList<>();
Base objB = new B();
Base objA = new A();
objects.add(objA);
objects.add(objB);
for(Base o : objects) {
o.doSomething();
}
21 }
13
14
15
%3D
16
17
18
19
20
Identify four (4) Java programming constructs/principles present in the code and list the
line number that it is found at. For example: Line 99 - Aggregation
(b) Write down what the output of the program will be.
Transcribed Image Text:QUESTION 4: Object Orientation (a) Given the code for the Base, A, and B classes as well as the provided main method: 1| public class Base{ public void doSomething() {System.out.println("Base");} 3 } 4 public class A extends Base{ @Override public void doSomething() {System.out.println("Class A");} 7 } 8 public class B extends Base{ @Override public void doSomething() {System.out.println("Class B");} 10 11 } 12 public static void main(String[] args) { ArrayList<Base> objects = new ArrayList<>(); Base objB = new B(); Base objA = new A(); objects.add(objA); objects.add(objB); for(Base o : objects) { o.doSomething(); } 21 } 13 14 15 %3D 16 17 18 19 20 Identify four (4) Java programming constructs/principles present in the code and list the line number that it is found at. For example: Line 99 - Aggregation (b) Write down what the output of the program will be.
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