title: Explanation of the statement below about Groovy closures.
body: <p>I'm reading this: <code>A closure looks a lot like a regular Java or Groovy code block, but actually it's not the same. The code within a regular code block (whether its a method block, static block, synchronized block, or just a block of code) is executed by the virtual machine as soon as it's encountered. With closures the statements within the curly brackets are not executed until the call() is made on the closure. In the previous example the closure is declared in line, but it's not executed at that time. It will only execute if the call() is explicitly made on the closure</code></p>
  
  <p>And I'm thinking, how is this true, in Java if you have an instance method, the code is only executed when the method is called then how are they saying above that is executed by the VM as soon as it sees it ? 
  If I have a method <code>func(){int a =5; return a+5;}</code> this will be executed only when called is my understanding. </p>