Help with explantation of this Java Code

/* Need help with how this code works, thank you */

public static void main(String[] args){ {

int x(int n);

int m = 0;

n = n + m + 1;

return = n;

System.out.println("n1 = " +n1); }

int y(int n) {

int m = 1;

int m = 1;

n = x(n);

return m + n;

}

}

This code doesnt work. but, we use double braces for initialization. Object block initialization, class initialization etc.