Groovy has some limitations. They are described below
--> It can be slower than the other object-oriented programming languages.
--> It might need memory more than that required by other languages.
--> The start-up time of groovy requires improvement. It is not that frequent.
--> For using groovy, you need to have enough knowledge of Java. Knowledge of Java is important because half of groovy is based on Java.--> It might take you some time to get used to the usual syntax and default typing.
--> It consists of thin documentation.

Groovy adds the execute method to String to make executing shells fairly easyprintln "ls".execute().text

These are the infrastructure components where we can use groovy:
-Application Servers
-Servlet Containers
-Databases with JDBC drivers
-All other Java-based platforms

It is possible but in this case the features are limited. Groovy cannot be made to handle allthe tasks in a manner it has to.

A closure in Groovy is an open, anonymous, block of code that can take arguments, returna value and be assigned to a variable. A closure may reference variables declared in itssurrounding scope. In opposition to the formal definition of a closure, Closure in theGroovy language can also contain free variables which are defined outside of itssurrounding scope.
A closure definition follows this syntax:
{ [closureParameters -> ] statements }
Where [closureParameters->] is an optional comma-delimited list of parameters, andstatements are 0 or more Groovy statements. The parameters look similar to a methodparameter list, and these parameters may be typed or untyped.
When a parameter list is specified, the -> character is required and serves to separate thearguments from the closure body. The statements portion consists of 0, 1, or many Groovystatements.