build.gradle

// Apply the plugin allows you to make java executable tasks
apply plugin: 'java'
// Apply the plugin allows you to set the java version used to compile the project
apply plugin: 'java-library'

// Set the description of the gradle project
description = "Client Server Socket Example"

// Set the java version of the gradle project
java {
    toolchain {
        languageVersion.set(JavaLanguageVersion.of(18))
    }
}

// Set the gradle wrapper version
// to use a specific version of gradle
wrapper {
    // Set the gradle version
    gradleVersion = '7.4.2'
    // Allow all types of installations of gradle distributions
    distributionType = Wrapper.DistributionType.ALL
}

// Set the repositories to download the dependencies
repositories {
    // Set the maven central repository to download the dependencies
    // The link to the maven central repository is https://repo1.maven.org/maven2/
    mavenCentral()
}

// Set the dependencies of the project
dependencies {
    // Implement gson
    // The link to the gson library is
    // https://mvnrepository.com/artifact/com.google.code.gson/gson
    implementation group: 'com.google.code.gson', name: 'gson', version: '2.10.1'
}

// Tell the IDEA and also java gradle plugin
// to mark the src folder as the source folder
// and the resources folder as the resources folder
sourceSets {
    src {
        main {
            java {
                srcDirs = ['src/main/java']
            }
            resources {
                srcDirs = ['src/main/resources']
            }
        }
    }
}

// Client and Server socket
// This task will run the Server capable of handling multiple clients
task Server(type: JavaExec) {
    group 'TCP Server/Client'
    description 'Creates Server socket that awaits for new clients to connect'

    // Set the classpath to the the above source sets
    classpath = sourceSets.main.runtimeClasspath

    // Set the main Class relative to the java source files.
    main = 'server.SockServer'

    // Set standard input to be the terminal
    standardInput = System.in

    // Get the port number from the project properties or use the default port 8888
    String port = (project.hasProperty("port") ? project.property("port") : "8888")

    // Pass the port to the java arguments
    args port
}

// This task will run the Client
// It will connect to the server and send a message
// The server will respond with a message
task Client(type: JavaExec) {
    group 'TCP Server/Client'
    description 'Creates Client socket that connects to the server'

    // Set the classpath to the the above source sets
    classpath = sourceSets.main.runtimeClasspath

    // Set the main Class relative to the java source files.
    main = 'client.SockClient'

    // Set standard input to be the terminal
    standardInput = System.in

    // Get the port number from the project properties or use the default port 8888
    String port = (project.hasProperty("port") ? project.property("port") : "8888")

    // Get the host from the project properties or use the default host
    String host = (project.hasProperty("host") ? project.property("host") : "localhost")

    // Pass the port and host to the java arguments
    args port, host
}