class A{
A(String s){}
A(){}
}
class B extends A{
B(){}
B(String s){
super(s);
}
void test(){
// insert code here
}
}
Which of the below code can be insert at line 7 to make clean compilation ?
class A{
A(String s){}
A(){}
}
class B extends A{
B(){}
B(String s){
super(s);
}
void test(){
// insert code here
}
}
A. A a = new B();
B. A a = new B(5);
C. A a = new A(String s);
D. All of the above
E. None of these
Answer: Option A
A. The process of acquiring properties and behaviors of one class by another
B. The process of creating objects
C. The process of encapsulation
D. The process of overloading methods
In Java, which keyword is used to implement inheritance between classes?
A. inheritsFrom
B. inherits
C. implements
D. extends
A. The class that inherits properties and behaviors
B. The child class
C. The class that is inherited from
D. The class that is marked as "final"
In Java, can a subclass inherit constructors from its superclass?
A. Only if the subclass is marked as "final"
B. Yes, a subclass inherits constructors from its superclass
C. Only if the superclass is marked as "static"
D. Only if the subclass is marked as "final"
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