Find all triplets with zero sum

// A simple Java program to find three elements
// whose sum is equal to zero
import java.io.*;
import java.util.*;
class num {
	// Prints all triplets in arr[] with 0 sum
	static void findTriplets(int[] arr, int n)
	{
		boolean found = false;
		for (int i = 0; i < n - 2; i++) {
			for (int j = i + 1; j < n - 1; j++) {
				for (int k = j + 1; k < n; k++) {
					if (arr[i] + arr[j] + arr[k] == 0) {
						System.out.println(arr[i] + " "
										+ arr[j] + " "
										+ arr[k]);
						found = true;
					}
				}
			}
		}

		// If no triplet with 0 sum found in array
		if (found == false)
			System.out.println(" not exist ");
	}

	// Driver code
	public static void main(String[] args)
	{
		int arr[] = { 0, -1, 2, -3, 1 };
		int n = arr.length;
		findTriplets(arr, n);
	}
}

// This code is contributed by Aditya Kumar (adityakumar129)