Groovy interview questions and answers.
1. What do you understand by groovy?
2. List the advantages of groovy.
- For all the Java programmers, it provides syntax similar to the syntax of Java language so it becomes easy to use it.
- Since it is based on Java, so it has a rich collection of Java libraries.
- It can easily integrate with your existing interface.
- It is completely object oriented so it becomes easy to use it.
- Reusable and assignable pieces of code is present in groovy.
- Operator overloading is also possible in this.
- Maps, arrays, ranges, and regular expressions can be literally declared.
- It possesses efficient object navigation.
3. What are the limitations of Groovy?
- 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.
4. Explain why closures and listeners are used in groovy.
5. Mention the features offered by groovy JDK.
- The collection of literals. The literal syntax and its initialization are natural and highly readable unlike java in which they are cumbersome and unpleasant.
- The Groovy Beans property. Although Java is based on the concept of JavaBeans as a structure, still it lacks a direct syntactic support. Whereas, groovy can declare a field as a property as trivial and can access it too.
- This feature was presented in groovy since its first release especially in the collection framework.
- GDK enhancements. Many operators for many of the classes and various additional methods have also been introduced by groovy.