How do I change the parameters in question while in Java?

public class Enemy $\{$

int $x,y,z$;$\frac{,}{\frac{?}{?}}3$ global variables

$//$ variables above, methods below

Enemy $()\{$

$x=0$;$,y=0$;$,z=0$;

$\}$

Enemy $($ int newx, int newy, int newz$)$ constructor $2$

$x=$ newx; $,y=$ newy; $z=$ newz;

$\}$

void moveposition $($ int xdif, int ydif, int zdif$)\{//$ method

$x=x+$ xdif ;$,y=y+$ ydif ;$,z=z+$ zdif;

System.out.println$("$ Enemy moves to $x$:$+x+y$:$+y+z$:$+z$;

$\}$

$\}\frac{\frac{?}{?}}{?}$ end of class Enemy

Write one line of code to declare a reference variable named: the$\_$enemy

$($Declare only, do not CREATE the object$)$

$(1)$ correct

Write one line of code to declare a reference variable named: a$\_$enemy

AND create the object using the default constructor

$(2)$ correct

Write one line of code to declare a reference variable named: enemyobject

AND create an object using the constructor with $3$ parameters

all $3$ values for the parameters should be $514$

$(3)$ INCORRECT

Write one line of code to move the object using the variable: enemyobject

On the $x$ axis move $3,$ on the $Y$ axis move $-3,$ on the $Z$ axis move $-1$

${}^{(4)}$ INCORRECT