A **prime triplet** is a collection of three prime numbers in the form (p, p + 2, p + 6) or (p, p + 4, p + 6).

Write a program in **Java** to display all the possible prime triplets in the range m and n, where the value of m and n are entered by the user.

**Example:****INPUT:**

M = 1

N = 20**OUTPUT:**

5, 7, 11

7, 11, 13

11, 13, 17

13, 17, 19

```
import java.io.*;
class PrimeTriplet{
public static void main(String args[])throws IOException{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
System.out.print("M = ");
int m = Integer.parseInt(br.readLine());
System.out.print("N = ");
int n = Integer.parseInt(br.readLine());
for(int i = m; i <= n; i++){
int p1 = i;
int p2 = i + 2;
int p3 = i + 6;
if(p2 > n || p3 > n)
break;
if(isPrime(p1) && isPrime(p2) && isPrime(p3))
System.out.println(p1 + ", " + p2 + ", " + p3);
p1 = i;
p2 = i + 4;
p3 = i + 6;
if(p2 > n || p3 > n)
break;
if(isPrime(p1) && isPrime(p2) && isPrime(p3))
System.out.println(p1 + ", " + p2 + ", " + p3);
}
}
public static boolean isPrime(int n){
int f = 0;
for(int i = 1; i <= n; i++)
if(n % i == 0)
f++;
return f == 2;
}
}
```

## 7 replies on “Prime Triplet in Java”

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Sir,a program is given which states that:

WAP in Java to display all Pythagorean triplets from m to n(both m and n are inclusive)(m<n)(m and n are to be accepted by the user)

Hint:6,8,10 are said to be pythagorean triplet

(6^2+8^2=10^2)

m and n are to be accepted as positive integers

Here is the Pythagorean Triple Program.

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Sir,a program is given which states that:

WAP in Java to display all Pythagorean triplets from m to n(both m and n are inclusive)(m<n)(m and n are to be accepted by the user)

Hint:6,8,10 are said to be pythagorean triplet

(6^2+8^2=10^2)

m and n are to be accepted as positive integer