In JSP Why Expression tag can not take the semicolon at end of statement

Question

Expression element in the JSP <%= … %> Only one java expression Ex:

 Index.jsp
 ----------
 Welcome to JSP scripting elements

  <%! int num1=10;
      int num2=20;
      int add;
   %> 

<% add=num1+num2 %>

   Addition is<%= add %> <@!-- Expression tag -->

Answer 1

Because they're expressions, and not statements.

<%= add %>

is translated to

out.print(add);

So you really don't want a semicolon after the expression. It would lead to

out.print(add;);

which would not be valid Java.