Java - Ascending Order Program

class asc
 {
   public static void main(String arg[])
    {
      int a[] = {4,2,1,3,7};
      int i,j,t;

       for(i=0;i<5;i++)
        {
          for(j=i+1;j<4;j++)
          {
            if (a[i]>a[j])
             {
               t = a[i];
              a[i] = a[j];
              a[j] = t;
             }
          }
        }

       for(i=0;i<5;i++)
         {
             System.out.println(a[i]);
          }

     }
  }