public class testwhile
{
    public static void main(String args[])
    {
        int i =9;
        int j =9;
        
        //当变量i大于或等于1的时候执行循环
        while(i>=1)
        {
            while((j<=i)&&(j>0))
            {
                System.out.println (i+"*"+j+"="+j*j+"");
                j--;
            }
            System.out.println ("");
            i--;
            
            //把每次循环后的j值赋值给i
            j=i;
        }
    }
}