用Java在控制台画一个菱形

package javaapplication2;

/**

 *

 * @author CodeMonkey

 */

public class JavaApplication2 {

    /**

     * @param jid the command line arguments

     */

       public static void main(String [] args)

    {

        JavaApplication2 Test = new JavaApplication2();

        if (args.length==0)

            Test.print(22);

        else

            Test.print(Integer.parseInt(args[0]));

    }

   public void print(int x) {

     for(int k = x >>> 1, i = -k; i <= k; i++) {

         System.out.print("\t\t\t");

         for(int j = -k, m = k - Math.abs(i); j <= m; j++) {

             System.out.print(Math.abs(j) + Math.abs(i) == k || i * j == 0 ? '*' : ' ');

         }

         System.out.println();

     }

}

}