Program to find area of circle and cylinder in JAVA

class Area{

final float PI=3.14f;
float arac,aracy;
int r=2,h=3,l=4;
void areaofcircle()
{
arac=PI*r*r;
System.out.println("area of circle="+arac);
}
void areaofcylinder()
{
aracy=((PI*r*r*h)+(2*PI*r*l));
System.out.println("area of cylinder="+aracy);
}
}
class area2{

public static void main(String[] arg)
{
 area ob=new area();
 ob.areaofcircle();
 ob.areaofcylinder();
}
}