Slip 3 A) Write a ‘java’ program to check whether given number is Armstrong or not. (Use static keyword)
Answer :
import java.io.DataInputStream;
class Slip3A {
static int temp;
public static void main(String args[]){
int n,r,sum=0;
DataInputStream dr = new DataInputStream(System.in);
try {
System.out.print("Enter Number");
n = Integer.parseInt(dr.readLine());
temp=n;
while(n>0){
r = n%10;
sum=sum+(r*r*r);
n=n/10;
}
if(temp==sum){
System.out.println(temp + " Is Armstrong Number : ");
}else{
System.out.println(temp + " Is Not Armstrong Number : ");
}
} catch (Exception e) {}
}
}
Output :
Slip 3 B) Define an abstract class Shape with abstract methods area () and volume (). Derive abstract class Shape into two classes Cone and Cylinder. Write a java Program to calculate area and volume of Cone and Cylinder.(Use Super Keyword.)
Answer :
import java.io.*;
abstract class Shape{
int a,b;
Shape(int x, int y){
a = x;
b = y;
}
abstract double area();
abstract double volume();
}
class Cone extends Shape{
Cone(int x, int y){
super(x,y);
}
double area(){
return (a*b*3.14);
}
double volume(){
return (3.14*a*a*b);
}
}
class Cylinder extends Shape{
Cylinder(int x, int y){
super(x,y);
}
double area(){
return (2*3.14*a*b*3.14*a*b);
}
double volume(){
return (3.14*a*a*b);
}
}
class Slip3B{
public static void main(String args[]) throws Exception{
int r,h,s;
DataInputStream dr = new DataInputStream(System.in);
System.out.println("Enter Radius, Height and Side Values : ");
r = Integer.parseInt(dr.readLine());
h = Integer.parseInt(dr.readLine());
s = Integer.parseInt(dr.readLine());
Shape s1;
Cone c1 = new Cone(r,s);
s1=c1;
System.out.println("Area of Cone is : " + s1.area());
System.out.println("Volume of Cone is : " +s1.volume());
Cylinder cy = new Cylinder(r,h);
s1 =cy;
System.out.println("Area of Cylinder is : " + s1.area());
System.out.println("Area of Cylinder is : " + s1.volume());
}
}
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