29.3. JavaScript Engine in Java

Try these first

1. 1.

   What was the default JavaScript engine in Java before Nashorn?

   Hint

   Remember, it was developed by Mozilla.

2. 2.

   What is the Nashorn engine used for?

   Hint

   Think about performance improvements.

3. 3.

   What JavaScript engine replaced Rhino?

   • Rhino
   • Nashorn
   • GraalVM

   Hint

   It was introduced in Java 8.

4. 4.

   True or False: Nashorn has been deprecated in Java 11.

   • True
   • False

   Hint

   Remember the transition to newer technologies.

5. 5.

   Create a simple Nashorn script that computes the factorial of a number passed from Java.

   Hint

   Think recursion when computing factorial.

6. 6.

   Discuss the implications of transitioning from Nashorn to GraalVM for existing Java applications that use Nashorn.

   Hint

   Consider what advantages GraalVM offers over Nashorn.