Find the first 1000 twin prime numbers in Java using an isPrime function for the primality check and a value comparison between the prime numbers.

`1. `**class** TwinPrimes
2.{
3. **public static** void main(String[] args)
4. {
5. int LastPrime = 1;
6. for (int n = 0; n < 1000; n++)
7. {
8. if (isPrime(n)) // We only care about prime numbers
9. {
10. if ((n - LastPrime) == 2) // If the difference between this prime and the last prime is 2
11. {
12. System.out.println((n - 2) + " and " + n + " are twin primes"); // We have a twin prime
13. }
14. LastPrime = n; // Store the last prime so we can compare it to the next one
15. }
16. }
17. }
18.
19. **public static** boolean isPrime(int n)
20. {
21. if (n <= 1) // Not prime
22. **return false**;
23. if (n == 2) // Prime
24. **return true**;
25. if (n % 2 == 0) // Divisible by 2 means it's always not a prime
26. **return false**;
27.
28. // For all other numbers, test by checking the divisibility of the square root of the number
29. int m = (int)Math.round(Math.sqrt(n));
30.
31. for (int i = 3; i <= m; i += 2)
32. {
33. if (n % i == 0)
34. {
35. **return false;**
36. }
37. }
38. **return true;**
39. }
40.}

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