Example of method overloading:-
//dynamic polymorphism
class Sum
{
void add(int a, int b)
{
System.out.println("Sum of
two="+(a+b));
}
void add(int a, int b,int c)
{
System.out.println("Sum of
three="+(a+b+c));
}
}
class Polymorphism
{
public static void main(String
args[])
{
Sum s=new Sum();
s.add(10,15);
s.add(10,20,30);
}
}
Output:-
Sum of two=25
Sum of three=60
è That means, JVM decides which method is called depending on the difference in the method signature.
Example of method overriding:-
//dynamic polymorphism
class A
{
void cal(double x)
{
System.out.println("square
value="+(x*x));
}
}
class B extends A
{
void cal(double x)
{
System.out.println("square
root="+Math.sqrt(x));
}
}
class Polymorphism
{
public static void main(String
args[])
{
A a=new A();
a.cal(15);
}
}
Output:-
square value=225.0
è When we create object of class B(B
a=new B()), then out will be
square root=3.872983346207417
è That means JVM decides which method is called depending on the data type
(class) of the object
used to call the method.
Posts
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