Java tutorial : How to write a program to calculate the circumference , perimeter and area of a cylinder

Importjava.util.*
Public class cylinder 
{
Public static void main (string [] args),

{
Scanner input = new scanner (system.in),
Double P,pie,r,h,c,A,
Pie=3.142
System.out.println("input radius "),
r=input.next double (),
System.out.println("input height "),
h=input.next double ( ),
P=(2*pie*r)*(r+h),
C=π*r*r,
A=π*r*r*h,
System.out.println("The perimeter is,  +P")
System.out.println("circumference is, +C)
System.out.println("Area is +A")
}
}