threats of King is removed from list of possible movment

src/Main/Cell.java

+package Main;
+
+public class Cell implements Comparable<Cell>{
+    int x;
+    int y;
+    public Cell(int x,int y){
+        this.x = x;
+        this.y = y;
+    }
+
+    @Override
+    public int compareTo(Cell o) {
+        if(o.x == x){
+            return o.y - y;
+        }
+        else {
+            return o.x-x;
+        }
+    }
+}

src/Main/Main.java

@@ -72,7 +72,7 @@ public class Main {
     }
     public static void printMoves(ArrayList<int[]> moves){
         for(int m[] : moves){
-            System.out.print((char)(m[0]+'a')+""+(m[1]+1)+"\t");
+            System.out.print((char)(m[0]+'a')+""+(m[1]+1)+",");
         }
         System.out.println();
     }

src/Pieces/King.java

 package Pieces;
 
 import Main.Board;
+import Main.Cell;
 
 import java.util.ArrayList;
+import java.util.HashSet;
 
 public class King extends Piece {
 
@@ -40,9 +42,26 @@ public class King extends Piece {
         return false;
     }
 
+    public HashSet<Cell> getThreatedPlaces(){
+        HashSet<Cell> retSet = new HashSet<>();
+        for (int i = 0 ; i < 8 ; i++){
+            for(int j =0 ; j < 8 ; j++){
+                Piece p = getBoard().getBoard()[i][j];
+                if(p!=null && (p.isWhite()!=isWhite())){
+                    ArrayList<int[]> moves = p.moves();
+                    for(int m[] : moves){
+                        Cell c = new Cell(m[0],m[1]);
+                        retSet.add(c);
+                    }
+                }
+            }
+        }
+        return retSet;
+    }
     @Override
     public ArrayList<int[]> moves() {
         ArrayList<int[]> move = new ArrayList<>();
+        HashSet<Cell> threats = getThreatedPlaces();
         int x = getX();
         int y = getY();
         int posx[]={x,x,x+1,x+1,x+1,x-1,x-1,x-1};
@@ -51,7 +70,10 @@ public class King extends Piece {
             if((posx[i]>=0&&posx[i]<8&&posy[i]>=0&&posy[i]<8)){
                 if(getBoard().isEmpty(posx[i],posy[i]) || (getBoard().getColor(posx[i],posy[i])==2 && this.isWhite()) ||(getBoard().getColor(posx[i],posy[i])==1 && isBlack()) )
                 {
-                    move.add(new int[]{posx[i], posy[i]});
+                    Cell cmp = new Cell(posx[i],posy[i]);
+                    if(!threats.contains(cmp)) {
+                        move.add(new int[]{posx[i], posy[i]});
+                    }
                 }
             }
         }