Aim:
To write a Java program to implement constructor
1) A constructor with no parameters:
Program:
class A
{
int l,b;
A()
{
}
l=10;
b=20;
int area()
{
return l*b;
}
}
class constructordemo
{
public static void main(String args[])
{
A a1=new A();
int r=a1.area();
System.out.println("The area is: "+r);
}
}
Output:
The area is:200
2) A constructor with parameters:
Program:
class A
{
int l,b;
A(int u,int v)
{
l=u;
b=v;
}
int area()
{
return l*b;
}
}
class constructordemo
{
public static void main(String args[])
{
A a1=new A(10,20);
int r=a1.area();
System.out.println("The area is: "+r);
}
}
Output:
The area is:200