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Introduction to JVM Languages

Book Image

Introduction to JVM Languages

Overview of this book

Anyone who knows software development knows about the Java Virtual Machine. The Java Virtual Machine is responsible for interpreting Java byte code and translating it into actions. In the beginning, Java was the only programming language used for the JVM. But increasing complexity of the language and the remarkable performance of the JVM created an opening for a new generation of programming languages. If you want to build a strong foundation with the Java Virtual Machine and get started with popular modern programming languages, then this book is for you. The book will begin with a general introduction of the JVM and its features, which are common to the JVM languages, helping you get abreast with its concepts. It will then dive into explaining languages such as Java, Scala, Clojure, Kotlin, and Groovy and will show how to work with each language, their features, use cases, and pros and cons. By writing example projects in those languages and focusing on each language’s strong points, it will help you find the programming language that is most appropriate for your particular needs. By the end of the book, you will have written multiple programs that run on the Java Virtual Machine and know about the differences between the various languages.
Table of Contents (21 chapters)
Free Chapter
Title Page
About the Author
About the Reviewer
Customer Feedback


  1. Groovy is largely compatible with the Java language. Does this mean that Groovy compiles compatible Java code in exactly the same way as the Java compiler, without any side effects?

a) Yes, the Java compiler and Groovy compiler produce exactly the same Java bytecode. The resulting class will always behave exactly the same.

b) No, Java and Groovy are not compatible at the syntax level at all.

c) No, Groovy crashes when encountering Java's primitive data types.

d) No, Groovy is mostly compatible with the Java language syntax, but due to different design choices by the Groovy team, the class may not behave exactly the same as the same class that was compiled by a Java compiler.

  1. What will be the content of the msg1 variable?
        def name1 = 'reader'
        def msg1 = "hello, $name1"

a) "hello, reader"

b) "hello, $name"

c) This program will throw an exception

d) None of the above

  1. What will be the content of the msg2 variable?
        def name2 = "reader"
        def msg2 = 'hello, $name2'

a) "hello...

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