Deplacer mon ocean et poisson

salut! Voici trois classes que j'ai cree via Eclipse (Fish, ocean ,oceanlifemain) et je n'arrive pas a deplacer mon ocean et mon poisson de 5++.
besoin d'aide svp! Il y a un peu d'allemand dedans mais c'est pas important!

package infpp.oceanlife;
public class Fish {
 private int x;
 private int y;
 private String name;
 public Fish(int x, int y, String name) {
   this.x = x;
   this.y = y;
   this.name = name;
 }
 public int getX() {
   return this.x;
 }
 public void setX(int x) {
   this.x = x;
 }
 public int getY() {
   return this.y;
 }
 public void setY(int y) {
   this.y = y;
 }
 public String getName() {
   return this.name;
 }
 public void setName(String name) {
   this.name = name;
 }
/**
* 
* Rückgabewert eines Fisches
* 
*/
 public String toString() {
   return "Fish [x=" + x + ", y=" + y + ", name=" + name + "]";
 }
}

package infpp.oceanlife;
public class Ocean {
private int width;
private int depth;
private Fish fish; 
    public Ocean (int width, int depth, Fish fish) {
    this.width = width;
    this.depth = depth;
    this.fish = fish;
    }
    public int getwidth () {
   return this.width;
    }
    public void setwidth (int width) {
   this.width = width;
    }
    public int getdepth () {
   return this.depth;
    }
    public void setdepth (int depth) {
   this.depth = depth;
    }
    public Fish getfish () {
   return this.fish;
    }
    public void setfish (Fish fish) {
   this.fish = fish;
    }
    public void move () {
   int H = fish.getX();
   int V = fish.getY();
   System.out.println("Die aktuell position von dem Fische "  + H + " " + V);
    }
    public String toString () {
   return "Ocean [width = " + width + ", depth = " + depth + ", fish = " + fish + "]";
    }
}    

package infpp.oceanlife;
public class OceanLifeMain {
public static void main(String[] args) {
int width = 1024;
int depth = 768;
Ocean ocean = new Ocean(width, depth, new Fish(4 , 6 , "nemo"));
for (int i = 0; i < 5; i++) {
ocean.move ();
System.out.println(ocean);
}
}
}