Java MCQ: What is a key benefit of using the JShell tool introduced in Java 9?
Answer:
Explanation:
The key benefit of using the JShell tool introduced in Java 9 is that it allows for interactive experimentation with Java code. JShell is a Read-Eval-Print Loop (REPL) tool that provides an environment where developers can write and execute Java code snippets interactively without needing to create a full Java class or set up a project.
This feature is particularly useful for learning, prototyping, and testing small pieces of code, as it allows developers to quickly see the results of their code and make adjustments on the fly. JShell supports most Java features, including expressions, statements, and methods, making it a versatile tool for rapid development and experimentation.
For example, in JShell, you can quickly test a mathematical operation like this:
jshell> int result = 10 + 20;
jshell> System.out.println(result);JShell evaluates the code immediately and prints the result, making it an excellent tool for exploring Java APIs, debugging, and teaching Java concepts.
Reference links:
https://www.rameshfadatare.com/learn-java-programming/
https://www.javaguides.net/p/java-tutorial-learn-java-programming.html