b) Implementing Constructor
Aim: To write a JAVA program to implement constructor
Description:
Programs:
(i)A constructor with no parameters:
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:
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:
(ii)A constructor with parameters
class A
{
int l,b;
A(int u,int v)
{
l=u;
b=v;
}
int area()
{
return l*b;
}
}
class constructordemo1
{
public static void main(String args[])
{
A a1=new A(10,20);
int r=a1.area();
System.out.println("The area is: "+r);
}
}
Output:
class A
{
int l,b;
A(int u,int v)
{
l=u;
b=v;
}
int area()
{
return l*b;
}
}
class constructordemo1
{
public static void main(String args[])
{
A a1=new A(10,20);
int r=a1.area();
System.out.println("The area is: "+r);
}
}
Output:
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