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Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "The corresponding sourceSets property should be updated if not using the default convention."

A block of code is set as follows:

sourceSets {
   main.kotlin.srcDirs += 'src/main/myKotlin'
   main.java.srcDirs += 'src/main/myJava'
}

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

sourceSets {
   main.java.srcDirs += 'src/main/kotlin/'
}

Any command-line input or output is written as follows:

$ kotlinc hello.kt -include-runtime -d hello.jar.
$ java -jar hello.jar

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "In the Select Deployment Target window, select your device, and click on OK."

Warnings or important notes appear like this.

Tips and tricks appear like this.