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String replacement in java, similar to a velocity template

Is there any String replacement mechanism in Java, where I can pass objects with a text, and it replaces the string as it occurs.
For example, the text is :

Hello ${user.name},
    Welcome to ${site.name}. 

The objects I have are "user" and "site". I want to replace the strings given inside ${} with its equivalent values from the objects. This is same as we replace objects in a velocity template.

Velocity: Is a any way to check if variable is defined

I want to include one template nested into others cont1, cont2, cont3. And nested template should be hide one specific control for cont1 only. Before inclusion into cont1 I would like to assign value to some flag variable $hideMyControl.

And inside nested template I would like to check if $hideMyControl is assigned value.

How to perform such check?

Why should I learn and use struts?

I'm a java developer, not seasoned, but I am familiar with most concepts reasonably well.

I recently built a website using Tomcat/JSP (~30 dynamic pages). I made the newbie mistake of including large sections of core logic in the JSP, using the rationalization that it's "just a simple project".

I learned the hard way. So I'm re-building the app now in google app engine using servlets and planning to use Velocity to implement it using a Model-View-Controller design pattern.

I'm also looking at Struts, but haven't used the framework before.

Can someone convince me why I should incorporate struts into this project? Is it really going to buy me a lot for a medium sized project of one or two people?

There is a clear cost in an extra learning curve with strut, will the benefits outweigh the costs? Or will the use of Velocity be enough to segregate the logic? Opinions?

Meteor Velocity with Jasmine not returning expecting result?

I'm trying to test the following which works manually:

1. Return a list of users as <div>'s
2. Click a button to reduce that count of <div>'s by one.

This does not seem to be working:

  it("should show one less person if you tap you liked them", function() {
    var personLength = $('.person').length;
    console.log(personLength); #> 7
    $("[data-action=like]").first().click();
    console.log($('.person').length); #> 7
    console.log(Likes.find().fetch()); #> 1
    expect($('.person').length).toEqual(person-1); #> Fail (expected 7 to equal 6)
  });

I'm confused on why it does this. I clearly get the expected result when testing manually.

I think I'm missing some way to reset that test to look at the DOM again or something? Perhaps some async method to callback? I'm not sure but seems like a simple error.

velocity (test instanceof)

How can I test the class of a given object in a velocity template. I can't find an instanceof directive

Replace a Substring of a String in Velocity Template Language

I want to replace a part of a string in Velocity Template Language with another string.

For Example:

#set($a = "Hello")
#set($b = "+")

I want to replace ll in Hello with ++. The output should be He++o

Please help me

Thanks Kishore

Velocity vs. FreeMarker [closed]

Velocity or FreeMarker?

They look pretty much the same, even the syntax?

What to use? Or when to use what?

How I hide empty Velocity variable names?

I am using Struts + Velocity in a Java application, but after I submit a form, the confirmation page (Velocity template) shows the variable names instead an empty label, like the Age in following example:

Name: Fernando

Age: {person.age}

Sex: Male

I would like to know how to hide it!

JSP vs Velocity what is better?

What is better between JSP and velocity in - Performance - Ease of use - Ease of creating reusable components - Availability of open source 3rd parties - IDE support

How to convert string into integer in velocity template?

i have a velocity template file which has the data from xml. I want to convert the string into integer type. can anyone help me to find out the solution.

Template Engines for Spring Framework [closed]

I've taken quite a shine to the Spring Framework and would like to get into it a bit more. I have noticed that aside from plain vanilla JSPs there are various template engines for use with Spring MVC, such as Velocity and Freemarker. Are there others? Which one do you recommend?

Velocity, what's the most efficient way to check if a string is empty and not null

I often have cases when a string value is absent and/or empty. Is this the best way to test this condition?

#if( $incentive.disclaimer && $!incentive.disclaimer != '' ) 
   $incentive.disclaimer 
#end

$null check in velocity

I came to know about null check using $null in velocity 1.6 through a resource updated by you. Resource: http://stackoverflow.com/questions/24495/reading-model-objects-mapped-in-velocity-templates But I am facing so many challenges that there is no $null for null check in velocity as there is no documentation provided about this. Please provide me with documentation stating $null as valid for null check in velocity.

Thanks in Advance lucky

How to escape a # in velocity

I would like to know how can i escape a # in velocity. Backslash seems to escape it but it prints itself as well

This:

\#\#

prints:

\#\#

I would like:

##

How to do an inline if/otherwise in Velocity?

In pure Java, I could do this:

value = (a > b) ? a : b;

Whereas in Velocity, the long form would be:

#if($a > $b)          
    #set($value = $a)
#else
    #set($value = $b)
#end

Is there a short form in Velocity? I want to be able to do an if/otherwise inline.