Thread: Triangle Printing - Java Program

I got other version of that program that asks the user the high of the triangle, and the symbol that he/she wants to use to print the triangle, I also wrote a simple menu
just to show;

public class Triangle {
 
	public static void main(String[] args) {
 
		Scanner input = new Scanner (System.in);
		int optiona =0;
 
		do{	
			optiona = optiona();
 
			switch (opcao){
			case 0:	
                               System.exit()
                        break;
 
                        case 1:
			       System.out.println("Insert the tringle's high :");
			       int high = input.nextInt();	
 
			       System.out.println();
			       System.out.println("Insert the triangle's symbol :");
			       char symbol = input.next().charAt(0);
 
			       for (int l=1; l <= altura; l++ ){
 
				       printSequence(high-l,' ');	
				       printSequence(2*l-1,symbol);
				       System.out.println();
		               }
                        break;
		}while(opcaoa != 0);
	}
 
	/**
	 * Prints in the screen a sequence with n copys of c 
	 * @param n size of the sequence
	 * @param c character of the sequence
	 */
	public static void printSequence(int n, char c) {
		for (int i=1; i <= n; i++ )
			System.out.print(c);
	}
 
	public static int optiona(){ //Prints the menu until the option is valid
 
		int optiona =0;
		do{ 
			Scanner input = new Scanner (System.in);
			System.out.println("Choose an option:");
			System.out.println("		0 - Exit");
			System.out.println("		1 - Create triangle");
			opcaoa = input.nextInt();
 
			if (optiona <0 || optiona >1) // verify if the option is valid
				System.out.println("Invalid option!, please choose another option");
		}while(optiona <0 || optiona>1);
	return optiona;
	}
}

Sorry if something wrong, and hope some comments (new in forum, and still getting used to it)