![]() Public static void main(String args) throws IOException else if (line. Grande Console Table Haute Vieillie J-Line Table en Bois Recyclé Blanchi 70x90x182cm Grande Console Table Haute Vieillie J-Line Table en Bois Recyclé. 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. We’ll start by creating a fresh application with a Maven archetype, like whats shown in Listing 1. Add dependencies and set the Java version 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). ![]() 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. On some platforms, platform-specific commands will need to be issued before the reader will function properly. Our demonstration is based on a theoretical application that examines a software project's working directory and gathers information about the projects there. It supports custom tab-completion, saveable command history, and command line editing. ![]() 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. 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.
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