Using Java to achieve diamond-shaped printout

2. Import Java.util.Scanner;
4. public class Dengyao2 {
6. Public Dengyao2 () {
8. Super ();
10. }
12. public static void Main (string[] args) {
14. System.out.println ("Please enter the diamond side length:");
16. Scanner input = new Scanner (system.in);
18. if (Input.hasnextint ()) {
20. int a = Input.nextint ();
22. Dengyao2 triangle = new Dengyao2 ();
24. Triangle.function (a);
26. } else {
28. SYSTEM.OUT.PRINTLN ("You entered the wrong format!") Please enter an integer!! ");
30. }
32. Input.close ();
34. }
36. public void function (int x) {
38. for (int i = 1; i <= x; i++) {
40. for (int j = 1; J <= X-i; j + +) {
42. System.out.print ("");
44. }
46. for (int k = 1; k <= 2 * i-1; k++) {
48. System.out.print ("*");
50. }
52. System.out.println ();
54. }
56. for (int i = x-1; i > 0; i--) {
58. for (int j = 1; J <= X-i; j + +) {
60. System.out.print ("");
62. }
64. for (int k = 1; k <= 2 * i-1; k++) {
66. System.out.print ("*");
68. }
70. System.out.println ();
72. }
74. }
76. }

Using Java to achieve diamond-shaped printout