build.gradle

// This is build.gradle file
//set JAVA_HOME=C:\Program Files\Java\jdk-1.8
//set PATH=%JAVA_HOME%\bin;%PATH%
//
apply plugin: 'java'
apply plugin:'jacoco' 
jacoco { 
    toolVersion = "0.8.7" 
    }
java {
    sourceCompatibility = JavaVersion.VERSION_1_8
    targetCompatibility = JavaVersion.VERSION_1_8
}
group = 'com.example'
version = 'V1'

repositories {
    mavenCentral()
}

dependencies {
    testImplementation 'junit:junit:4.13.2'
}

test {
    // Specify the directory containing test classes
    testClassesDirs = sourceSets.test.output.classesDirs

    // Optionally configure test options
    testLogging {
        // Configure which events to log during test execution
        events 'passed', 'skipped', 'failed'
    }
    finalizedBy jacocoTestReport
}

 jar {
    manifest {
        attributes 'Main-Class': 'com.example.HelloWorld'        
    }

    from sourceSets.main.output  // Include compiled classes in the JAR
    archiveBaseName = 'hello-world-java'  // Name of the JAR file
    destinationDirectory = file('build/libs')  // Output directory for the JAR file
}

jacocoTestReport 
{ dependsOn test 
reports { 
    xml.required = true 
    html.required = true 
    } 
}