this”
Keyword:
Sometimes a method will need to refer to
the object that invoked it. To allow this, Java defines the this keyword. this
can be used inside any method to refer to the current object. That is, this is
always a reference to the object on which the method was invoked. We can use
this anywhere a reference to an object of the current class’s type is
permitted.
From
above example:
B(int i, int j, int k) //
parameterized constructor
{
this.x=i;
this.y=j;
this.z=k;
}
“super” keyword:
super has
two general forms: i) The first calls the superclass’s constructor. ii) super
used to access a member of the superclass that has been hidden by a member of a
subclass.
From
above example:
B(int i, int j, int k) // parameterized constructor
{
super(i,j);
z=k;
}
|
Class A{
int i;
}
class B extends A{
int i;
B(int i1,int j1)
{
super.i=i1;
i=j1;
}
}
|
