第六步：新建第二个项目模块HelloFriend目录及约定的目录结构

HelloFriend
 --src
 -----main
 ----------java
 ----------resources
 -----test
 ---------java
 ---------resources
 --pom.xml

第七步：在项目HelloFriend根目录建立pom.xml

<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>cn.itcast.maven</groupId>
  <artifactId>HelloFriend</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <name>HelloFriend</name>
  
    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.9</version>
            <scope>test</scope>
        </dependency>       
        
        <dependency>
            <groupId>cn.itcast.maven</groupId>
            <artifactId>Hello</artifactId>
            <version>0.0.1-SNAPSHOT</version>
            <scope>compile</scope>
        </dependency>       
        
    </dependencies>
</project>

第八步：在src/main/java/cn/itcast/maven目录下新建文件HelloFriend.java

package cn.itcast.maven;

import cn.itcast.maven.Hello;

public class HelloFriend {

    public String sayHelloToFriend(String name){
        
        Hello hello = new Hello();
        String str = hello.sayHello(name)+" I am "+this.getMyName();
        System.out.println(str);
        return str;
    }
    
    public String getMyName(){
        return "John";
    }

}

第九步：在/src/test/java/cn/itcast/maven目录下新建测试文件HelloFriendTest.java

package cn.itcast.maven;

import static junit.framework.Assert.assertEquals;

import org.junit.Test;

import cn.itcast.maven.Hello;


public class HelloFriendTest {
    @Test
    public void tesHelloFriend(){
        
        HelloFriend helloFriend = new HelloFriend();
        String results = helloFriend.sayHelloToFriend("litingwei");
        assertEquals("Hello litingwei! I am John",results);     

    }
}

第十步：在HelloFriend目录下执行命令mvn package

系统报错说没有找到依赖

第十一步：需要重新构建Hello第一个项目并安装到数据仓库，在命令行Hello根目录下执行mvn clean install

第十二步：重新在HelloFriend目录下执行命令mvn package

成功