who's turn?

src/Main.java

@@ -6,9 +6,10 @@ public class Main{
  *@version 1.0
  *@since 2019-5-7
  */
+
 private static char boardChar[][] = new char [8][8] ;
 
-private static void printBoard() {
+        private static void printBoard() {
                 for (int i=1 ; i<9 ; ++i) {
                         System.out.print("   " + i) ;
                 }
@@ -28,7 +29,7 @@ private static void printBoard() {
                 }
         }
 
-private static void updateBoard(Piece pw[], Piece pb[]) {
+        private static void updateBoard(Piece pw[], Piece pb[]) {
                 for (int i=0 ; i<8 ; ++i) {
                         for (int j=0 ; j<8 ; ++j) {
                                 boardChar[i][j] = ' ' ;
@@ -54,7 +55,7 @@ private static void updateBoard(Piece pw[], Piece pb[]) {
                 }
         }
 
-private static void checkCondition(Cell board[][], Piece pw[], Piece pb[]) {
+        private static void checkCondition(Cell board[][], Piece pw[], Piece pb[]) {
                 for (Piece p:pw) {
                         if (p instanceof King) {
                                 int sw1=0 ;
@@ -79,7 +80,7 @@ private static void checkCondition(Cell board[][], Piece pw[], Piece pb[]) {
                 }
         }
 
-public static void main(String[] args) {
+        public static void main(String[] args) {
                 Scanner in = new Scanner(System.in) ;
                 Player white = new Player(Color.WHITE) ;
                 Player black = new Player(Color.BLACK) ;
@@ -102,7 +103,8 @@ public static void main(String[] args) {
                 updateBoard(pw, pb) ;
                 printBoard() ;
                 while (true) {
-        wORb++ ;
+                        if (wORb%2==0) System.out.println("White player turn") ;
+                        else System.out.println("Black player turn") ;
                         String s = in.nextLine() ;
                         if (s.length()==2) {
                                 for (Piece p:pw) {
@@ -135,10 +137,12 @@ public static void main(String[] args) {
                                 }
                         }
                         else if (s.length()==5) {
+                                if (wORb%2==0) {
                                         for (Piece p:pw) {
                                                 if (p.getCell().getRow()==s.charAt(0)-'a' &&
                                                         p.getCell().getCol()+1==s.charAt(1)-'0') {
                                                         if (p.isValidMove(new Cell(s.charAt(3)-'a', s.charAt(4)-'1'), board, pw, pb)) {
+                                                                wORb++ ;
                                                                 Cell tmp = new Cell(s.charAt(3)-'a', s.charAt(4)-'1') ;
                                                                 board[p.getCell().getRow()][p.getCell().getCol()].setEmpty(true) ;
                                                                 p.setCell(tmp) ;
@@ -160,10 +164,19 @@ public static void main(String[] args) {
                                                         }
                                                 }
                                         }
+                                        if (wORb%2==0) System.out.println("please enter a valid move!") ;
+                                        else {
+                                                checkCondition(board, pw, pb) ;
+                                                updateBoard(pw, pb) ;
+                                                printBoard() ;
+                                        }
+                                }
+                                else {
                                         for (Piece p:pb) {
                                                 if (p.getCell().getRow()==s.charAt(0)-'a' &&
                                                         p.getCell().getCol()+1==s.charAt(1)-'0')
                                                         if (p.isValidMove(new Cell(s.charAt(3)-'a', s.charAt(4)-'1'), board, pw, pb) ) {
+                                                                wORb++ ;
                                                                 Cell tmp = new Cell(s.charAt(3)-'a', s.charAt(4)-'1') ;
                                                                 board[p.getCell().getRow()][p.getCell().getCol()].setEmpty(true) ;
                                                                 p.setCell(tmp) ;
@@ -184,15 +197,19 @@ public static void main(String[] args) {
                                                                 }
                                                         }
                                         }
+                                        if (wORb%2==1) System.out.println("please enter a valid move!") ;
+                                        else {
                                                 checkCondition(board, pw, pb) ;
                                                 updateBoard(pw, pb) ;
                                                 printBoard() ;
                                         }
+                                }
+                        }
                         else {
                                 System.out.println("Please enter a valid input!") ;
                         }
                 }
         }
 
-        }
+}