Java Reference
In-Depth Information
7. The class Animal is the base class and the class Dog is the derived class.
9.
a. The statement:
class BClass AClass
should be:
class BClass extends AClass
b. Variables u and v are private in class AClass and cannot be accessed directly
in class BClass .
11.
a.
public YClass()
{
a = 0;
b = 0;
}
b. public XClass()
{
super (0, 0);
z = 0;
}
c. public void two( int x, int y)
{
a = x;
b = y;
}
13. In overloading, two or more methods have the same name but have different
formal parameter lists. In overriding, you are redefining a method of a superclass
in a subclass. The two methods (the method in the superclass and its redefinition in
the subclass) have the same name and formal parameter list.
15. The class GradStudent has two printGrades methods and their headings are:
public void printGrades() and public void printGrades(String
status)
17.
a.
public void setData( int a, int b, int c)
{
super .setData(a, b);
z = c;
}
b. public void print()
{
super .print();
System.out.println(z);
}
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