JSP数组值应该怎样判断

Question

<td width="56" align="center" height="22">
<font <%if(obj2[17]>0){%>color="#000000" <%}else{%>color="#FF0000"<%}%>><%
out.print(format.format(obj2[17]));
%></font>
</td>
在上面的表格里，当obj2[17]中存的数不小于0时，显示成红色，当小于0时显示黑色，怎样判断？麻烦帮我改下，谢谢

Answer 1

<td width="56" align="center" height="22"> 
<%
    if(obj2[17]>=0)    out.println("<font color=red");    else out.println("<font color=black"); 
%>
<% 
out.print(format.format(obj2[17])); 
%> 
</font>
</td> 

Answer 2

<td width="56" align="center" height="22"> 
<% 
    if(obj2[17]>=0) 
%> 
    <font color=“red")>out.println(" ")</font> 
<% 
    else 
%> 
  <font color=“black")>out.println(" ")</font> 
</td> 

Answer 3

<%if(obj2[17]>=0){%>
<td width="56" align="center" height="22" background-color="red">...</td> 
<%}else{%>
<td width="56" align="center" height="22" background-color="black">...</td>
<%}%>

Answer 4

在Eclipse里写“obj2[17]>=0”为什么有红线呢？