使用Java绘制简陋圣诞树

import java.util.Scanner;
public class Ha{
	public static void main(String[] args){
		System.out.println("请输入圣诞树树身的高度：");
		Scanner in = new Scanner(System.in);
		int c = in.nextInt();
		star(c);
		wen(c);
	}
public static void star(int han){
	for(int i = 0 ;i < han; ++i){
		for(int a = han-i; a >= 1; --a){
			System.out.print(" ");
		}
		for(int b = 1; b <= i+1; ++b){
			System.out.print("^");
		}
		System.out.println();
	}
}
public static void wen(int han){
	if(han % 2 == 0){
		for(int b = 0; b<(han -2);b++){
		for(int c = 1;c<=(han-2)/2;c++){
			System.out.print("  ");
		}
		System.out.println("@@");
	}
}
	else{
		for(int a=0; a<(han-2);a++){
		for(int i = 1; i<=(han-1)/2; i++){
			System.out.print("  ");
		}
			System.out.println("@");
		}
	}
}
}