java print out the solid diamond and diamond-shaped hollow

/ **
  * solid diamond
  * /

public static void method8() {

  System.out.print("请输入实心菱形的行数：");
  int n = in.nextInt();
  int upRows = n / 2, starControl = 2, spaceControl = -1, spaceNum = n / 2, starNum = 1;
  for (int i = 0; i < n; i++) {
  　　 if (i >= upRows) {
    　　　　starControl = -2;
    　　　　spaceControl = 1;
  　　 }
   for (int j = 0; j <= spaceNum; j++) {
   　　 System.out.print(" ");
   }
   spaceNum += spaceControl;
   for (int j = 0; j < starNum; j++) {
    　　System.out.print("*");
   }
   　　starNum += starControl;
   　　System.out.println();
  }
 }

 

 

/**
  * 空心菱形
  */
 public static void method9() {
  System.out.print("请输入空心菱形的行数：");
  int n = in.nextInt();
  int upRows = n / 2, spaceContentControl = 2, spaceContentNum = 1, spaceControl = -1, spaceNum = n / 2;
  for (int i = 0; i < n; i++) {
  　　 if (i >= upRows) {
    　　　　spaceControl = 1;
    　　　　spaceContentControl = -2;
  　　 }
   for (int j = 0; j <= spaceNum; j++) {
    　　System.out.print(" ");
   }
   spaceNum += spaceControl;
   if (i > 0 && i < n - 1) {
    　　System.out.print("*");
    　　for (int j = 0; j < spaceContentNum; j++) {
     　　　　System.out.print(" ");
    　　}
    　　spaceContentNum += spaceContentControl;
    　　System.out.print("*");

   } else {
    　　System.out.print("*");
   }
   　　System.out.println();
  }
 }