Write a program to accept two numbers from the user and print whether they are twin prime number or not. A twin prime is a pair of two numbers that are both prime and their difference is two.

Example: 11 and 13

```
import java.io.*;
class Twin_Prime{
public static int prime(int k){
int f=1;
for(int i=2;i<k;i++){
if(k%i==0){
f=0;
}
}
return f;
}
public static void main() throws IOException{
int a1;
int a2;
int j;
int n;
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
System.out.println("Enter the limit");
n=Integer.parseInt(br.readLine());
System.out.println("Twin primes upto" +n+" are:");
for(int i=2;i<(n-2);i++){
j=i+2;
a1=prime(i);
a2=prime(j);
if(a1==1 && a2==1){
System.out.println(i+"\t"+j);
}
}
}
}
```

Output:

Enter the limit

50

Twin primes upto50 are:

3 5

5 7

11 13

17 19

29 31

41 43