Question

I need to access to next element in foreach to compare some value.

In JSP, I added some dummy element, and loop like this;

for(int i=0; i<list.size() - 1; i++) {
    MyClass element = list.get(i);
    MyClass nextElement = list.get(i+1);

    if(element.getSomeValue() > nextElement.getSomeValue())
        doSome();
        ...

But in VM I can’t get the element by index as far as I know.
If there’s some way to access to next element, please help me.

Answer 1

Your Velocity template (the .vm file) can access any Java object that’s placed into the Context. In your backing Java class or Velocity servlet, place your list into the context:

context.put("list", myList);

Then in your Velocity template you can reference it as $list and you can call methods on it by using $list.get(i), etc. Note that unlike JSP, you can’t place pure Java code in a Velocity template, you must use VTL.