CODEWITHSUNDEEP
javajspservletsscriptlet
JAN
JAN

Reputation: 21865

JSP - what's the difference between “<% … %>” VS “<%= … %>”

While working with JSP files and servlets , I came across <% … %> and <%= … %> .

What's the difference between both cases ?

Thanks

Upvotes: 7

Views: 11968

Answers (3)

Ramesh PVK
Ramesh PVK

Reputation: 15446

<%= new java.util.Date() %>

is same as

<% out.println(new java.util.Date()) %>

There are three types of Scriptlets :

  • Scriptlet Expressions of the form <%= expression %> that are evaluated and inserted into the output
  • Scriptlet of the form <% code %> that are inserted into the servlet's service method

  • Scriptlet Declarations of the form <%! code %> that are inserted into the body of the servlet class, outside of any existing methods. For ex:

    <%!

public int sum(int a, int b) {

return a + b;
}

%>

Upvotes: 11

Cristian
Cristian

Reputation: 700

<%= … %> will echo out a variable, where as <% … %> denotes a script or some code that is executed.

Here are the links to the jsp documentation:

Upvotes: 13

Francisco Spaeth
Francisco Spaeth

Reputation: 23903

In case of <% ... %> you are adding a server side code. And in case of <%= ... %> you are adding a server side code that automatically prints something. It could be seen as a shortcut for <% out.print( something ) %>.

Upvotes: 7

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