Missing com.sun:tools:jar:1.4.2

Error message: Missing:
----------
1) com.sun:tools:jar:1.4.2

  Try downloading the file manually from the project website.

  Then, install it using the command:
      mvn install:install-file -DgroupId=com.sun -DartifactId=tools -Dversion=1.4.2 -Dpackaging=jar -Dfile=/path/to/file

  Alternatively, if you host your own repository you can deploy the file there:
      mvn deploy:deploy-file -DgroupId=com.sun -DartifactId=tools -Dversion=1.4.2 -Dpackaging=jar -Dfile=/path/to/file -Durl=[url] -DrepositoryId=[id]

  Path to dependency:
  	1) HRTrainingModel:HRTrainingModel:jar:1.0-SNAPSHOT
  	2) commons-attributes:commons-attributes-compiler:jar:2.1
  	3) com.sun:tools:jar:1.4.2

----------
1 required artifact is missing.

for artifact:
  HRTrainingModel:HRTrainingModel:jar:1.0-SNAPSHOT

from the specified remote repositories:
  Eclipse (http://repo1.maven.org/eclipse/),
  Maven2 (http://repo2.maven.org/maven2/),
  central (http://repo1.maven.org/maven2),
  JBOSS (http://repository.jboss.org/maven2/),
  Ibiblio (http://www.ibiblio.org/maven/mule/dependencies/maven2/)

Group-Id: HRTrainingModel
Artifact-Id: HRTrainingModel
Version: 1.0-SNAPSHOT
From file: C:\WorkspaceMyEclipse\HRTrainingPersistence\pom.xml

Solution: You can use command line to resolve this but here how I did it.
1. Right click on the project to import the jar file manually because, I could not find the tools.jar file from any publicly available repositories.  I have set up the JAVA_HOME = C:\Program Files\Java\jdk1.6.0_10

Step 2. Setup Artifact form as follows.

Once you click okay, the Maven repository should looks like as follows.

3. Now, the last step.  Open up the pom.xml file add the dependency.

<dependency>
            <groupId>com.sun</groupId>
            <artifactId>tools</artifactId>
            <version>1.4.2</version>
        </dependency>

Under Maven Dependencies, you should able to find tools.jar.

Similar issue:

FAILED for project: 

    HRTrainingModel:HRTrainingModel:jar:1.0-SNAPSHOT

Reason:

Unable to locate the Javac Compiler in:
  C:\Program Files\MyEclipse 6.6\jre\..\lib\tools.jar
Please ensure you are using JDK 1.4 or above and
not a JRE (the com.sun.tools.javac.Main class is required).
In most cases you can change the location of your Java
installation by setting the JAVA_HOME environment variable.

Caution: You must have both the Maven JDK and the default Java JDK set to the same version.
See Jason Lee’s two comments under Comments tab below.