Public static void main(String args) throws IOException else if (line. Next, let’s modify the main class in src/main/java/com/infoworld/App.java to start a REPL loop. Modify App.java using the code in Listing 3. Add dependencies and set the Java version However, during that time, the execution of the rest of the code in the file is not put on hold. The code in setTimeout() indicates that there needs to be a one-second delay before it runs. Maven will use these commands to lay out a new project for us. Before we go any further, let’s also add all the dependencies we’ll need, and also set the Java version to 11 (any version from Java 8 forward should work), as I’ve done in Listing 2. This applies to the pom.xml file in the project root (leave the rest of the pom.xml as-is). So does the line console.log('Good Afternoon'), even though it is the last line of code in the file. Mvn archetype:generate -DgroupId=com.infoworld -DartifactId=jline3 -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false The demo applicationįor this tour, you’ll need a Java JDK and Maven installed. We’ll start by creating a fresh application with a Maven archetype, like what's shown in Listing 1. We’ll just use these features to explore the JLine capabilities, rather than actually implementing them. The application also is able to create new projects in the directory. The example application will start a REPL that accepts two commands, describe and create, which can be tab-completed. The describe command will list the folder hierarchy of the working directory with color coding (using paging if necessary), while create initiates an interactive menu that lets the user choose what kind of project to create-Java, JavaScript, or Python. If it’s a Java application, we’ll allow a multi-select of additional features the user can add (database or REST API) that will let us see a nested menu. Our demonstration is based on a theoretical application that examines a software project's working directory and gathers information about the projects there. We'll set up a basic demo application in Java and use the JLine and ConsoleUI libraries to add the features that we need. In this article, we’ll take a tour of building sophisticated interactive command-line interface (CLI) applications and REPLs (read–eval–print loops, or interactive shells) in Java. J-LINE Console Bois Foncé Bois 120x40x79cm. Couleur Prix Marque Voir tous les filtres. Retrouvez les délais et options de livraison ainsi que les disponibilités en magasin. The command-line interface (CLI) is the inner world of software development. From the shell, we have direct access to all the operating system's capabilities, and with that comes the power to compose and orchestrate all aspects of the software. Many tools and frameworks incorporate command lines. Not only that, but the command prompt is the root magic of working with software systems it's the home of near unlimited possibilities. Saisissez votre code postal pour voir les.
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