- Find root pom.xml in stage-2-module-1-build-tools-maven project. Now it looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.example</groupId>
<artifactId>stage-2-module-1-build-tools-maven</artifactId>
<packaging>pom</packaging>
<version>1.0-SNAPSHOT</version>
<modules>
<module>utils</module>
<module>demo</module>
</modules>
<properties>
<junit.version>5.8.1</junit.version>
<maven.jar.plugin.version>2.2</maven.jar.plugin.version>
<maven.compiler.plugin.version>2.2</maven.compiler.plugin.version>
<maven.surefire.plugin.version>2.22.2</maven.surefire.plugin.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-params</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>${maven.surefire.plugin.version}</version>
</plugin>
<plugin>
<!-- add something here-->
</plugin>
</plugins>
</build>
</project>- Add something to plugin section and make sure it is compatible with java 8
Custom jar utils-1.3.5.jar will be created with the following instructions:
- The jar should contain class
StringUtilswith methodboolean isPositiveNumber(String str). Apache Commons Lang 3.10library is used to implement this method.
- Find pom.xml in 'utils' and fill it with proper groupId, artifactId and Apache Commons Lang 3.10 (or higher) dependency
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<artifactId>stage-2-module-1-build-tools-maven</artifactId>
<groupId>org.example</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<groupId> <!-- something should be here--></groupId>
<artifactId> <!-- something should be here--></artifactId>
<version> <!-- something should be here--></version>
<dependencies>
<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
<!-- something should be here-->
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-params</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
</dependency>
</dependencies>
</project>- Implement method in StringUtils.class:
public class StringUtils {
public static boolean isPositiveNumber(String str) {
//here magic will happen
}
}Now we will use the created util class:
- Find pom.xml in 'demo' and fill in everything that is missed:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>stage-2-module-1-build-tools-maven</artifactId>
<groupId>org.example</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>demo</artifactId>
<dependencies>
<!-- something should be here-->
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-params</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
</project>- Provide required implementation:
public class Utils {
public static boolean isAllPositiveNumbers(List<String> args) {
//magic happens here
}
}Make sure that application passes all test suits.
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