如何用代码块功能插入代码？

package six;
import java.util.Scanner;
public class _6_6 {

public static void main(String[] args) {
    // TODO 自动生成的方法存根
    Scanner input = new Scanner(System.in);
    System.out.print("n值：");
    int n = input.nextInt();

    // 调用displayPattern()
    displayPattern(n);

}
public static void displayPattern(int n){
    for (int i = 1;i <= n;i++){
        for (int j = n;j > i;j--){
            System.out.print("  ");
        }
        for (int j = i;j > 0;j--){
            System.out.print(j + " ");
        }
        System.out.print("\n");
    }
}

}
神魔原因

public static void displayPattern(int n){
        for (int i = 1;i <= n;i++){
            for (int j = n;j > i;j--){
                if(j >= 10){
                    System.out.print("   ");
                } else {
                    System.out.print("  ");
                }
            }
            for (int j = i;j > 0;j--){
                System.out.print(j + " ");
            }
            System.out.print("\n");
        }
    }

有什么问题呢