How to return arrays.......?

How to return arrays.......?

package round1;
import java.util.Scanner;
public class MathewJhon { int i = 0;
public static void main(String[] args) {
Scanner scn = new Scanner(System.in);
int x = scn.nextInt();
int y = scn.nextInt();
int nth = scn.nextInt();
int a[] = genrate(x, y);
System.out.println(x + " " + y + " " + nth);
}
private static int[] genrate(int x, int y) {
for(int i=1;i<y;i++){
int val=(i*(i+1))/2;
int a[]= new int[y];
a[i]=val;
}
return a;
}
}