out.println与<%!%>的功能一样

<%!
  public static  final String DBDRIVER = "A";
  public static final String DBURL = "b";
  public static int add(int i,int j){
    return i+j;
   }
 %>
 <br>
 <h1><%=add(10,20) %></h1>
  <br>
<%
 int sum = 0;
 for(int i = 0; i <=100; i++)
 {
  sum +=i;
 }
 out.print("<h1>sum=" +sum+DBDRIVER+DBURL+add(10,20)+"</H1>");
%>
 <br>
 <%
  out.println("<table border = \"1\">");
  for(int i = 0; i<100; i++){
  out.println("<tr>");
     for(int j = 0 ; j<100; j++){
      out.print("<td>"+i+"x"+j+"</td>");
     }
     out.println("</tr>");

  }
  out.println("</table>");
 %>

 <br>

 <table border = "1">
 <%
 for (int i = 0; i<100;i++){
 %>
 <tr>
 <%
  for (int j=0; j<100; j++)
  {
    %>
    <td><%=i %>x<%=j %></td>
    <%
  }
  %>
 </tr>
 <%
 }
 %>
 </table>

使用<%=%> 比out.print()要好。