Write CubeImpl method based on Cube interface: package model; import java.util.Set; public interface Cube { public Set<CubeNet> getAllPossibleCubeNets(); } package model; import java.awt.Color; import java.util.HashMap; import java.util.HashSet; import java.util.Map; import java.util.Set; public class CubeImpl_Opinca implements Cube { private CubeNet representativeNet; public CubeImpl_Opinca(CubeNet cubeNetRepresentative) { assert cubeNetRepresentative != null : "cubeNetRepresentative is null!"; this.representativeNet = cubeNetRepresentative; } @Override public Set<CubeNet> getAllPossibleCubeNets() { } or make this code that's commented out work: // public CubeNet rotateTopFaceClockwise() { // Color top = representativeNet.getTop(); // Color front = representativeNet.getFront(); // Color right = representativeNet.getRight(); // Color back = representativeNet.getBack(); // Color left = representativeNet.getLeft(); // Color bottom = representativeNet.getBottom(); // // Map<Face, Color> faceToColorMap = new HashMap<>(); // Color[][] rotatedStickers = rotateTopFaceClockwise(); // faceToColorMap.put(Face.TOP, rotatedStickers[1][1]); // faceToColorMap.put(Face.FRONT, front); // faceToColorMap.put(Face.RIGHT, right); // faceToColorMap.put(Face.BACK, back); // faceToColorMap.put(Face.LEFT, left); // faceToColorMap.put(Face.BOTTOM, bottom); // // return new CubeNetImpl_Opinca(faceToColorMap); // } // //private Color[][] rotateTopFaceClockwise(Color[][] stickers) { // Color[][] newStickers = new Color[3][3]; // newStickers[0][0] = stickers[2][0]; // newStickers[0][1] = stickers[1][0]; // newStickers[0][2] = stickers[0][0]; // newStickers[1][0] = stickers[2][1]; // newStickers[1][1] = stickers[1][1]; // newStickers[1][2] = stickers[0][1]; // newStickers[2][0] = stickers[2][2]; // newStickers[2][1] = stickers[1][2]; // newStickers[2][2] = stickers[0][2]; // return newStickers; //}.

1. Write CubeImpl method based on Cube interface:
package model;
import java.util.Set;
public interface Cube {
public Set<CubeNet> getAllPossibleCubeNets();
}
package model;
import java.awt.Color;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
public class CubeImpl_Opinca implements Cube {
private CubeNet representativeNet;
public CubeImpl_Opinca(CubeNet cubeNetRepresentative) {
assert cubeNetRepresentative != null : "cubeNetRepresentative is null!";
this.representativeNet = cubeNetRepresentative;
}
@Override
public Set<CubeNet> getAllPossibleCubeNets() {
}
or make this code that's commented out work:
// public CubeNet rotateTopFaceClockwise() {

2. // Color top = representativeNet.getTop();
// Color front = representativeNet.getFront();
// Color right = representativeNet.getRight();
// Color back = representativeNet.getBack();
// Color left = representativeNet.getLeft();
// Color bottom = representativeNet.getBottom();
//
// Map<Face, Color> faceToColorMap = new HashMap<>();
// Color[][] rotatedStickers = rotateTopFaceClockwise();
// faceToColorMap.put(Face.TOP, rotatedStickers[1][1]);
// faceToColorMap.put(Face.FRONT, front);
// faceToColorMap.put(Face.RIGHT, right);
// faceToColorMap.put(Face.BACK, back);
// faceToColorMap.put(Face.LEFT, left);
// faceToColorMap.put(Face.BOTTOM, bottom);
//
// return new CubeNetImpl_Opinca(faceToColorMap);
// }
//
//private Color[][] rotateTopFaceClockwise(Color[][] stickers) {
// Color[][] newStickers = new Color[3][3];
// newStickers[0][0] = stickers[2][0];
// newStickers[0][1] = stickers[1][0];

3. // newStickers[0][2] = stickers[0][0];
// newStickers[1][0] = stickers[2][1];
// newStickers[1][1] = stickers[1][1];
// newStickers[1][2] = stickers[0][1];
// newStickers[2][0] = stickers[2][2];
// newStickers[2][1] = stickers[1][2];
// newStickers[2][2] = stickers[0][2];
// return newStickers;
//}