I am in Eclipse Indigo and I have installed m2eclipse plugin. I saw in Eclipse Helios there is an option Maven in the right click menu, when I clicked on a Project, but this option is not present now.
I have installed Maven from both of the marketplace and also from adding site in Install new software option in Eclipse(Help->Install New Software).
What I am doing wrong.
This question was asked before in SO, but I tried the solution provided there.
Is this option is really not present? What I want is to enable Maven Dependency Management of a Dynamic Web Project of Eclipse.
You have to do a right click on the project, then choose Configure → Convert to Maven project
One way is to import the project as Maven project.
If you are trying to install in Eclipse older versions, use YOXOS Marketplace - by EclipseSource. Search for "Maven" in marketplace. You will get Maven Integration for Eclipse provided by Sonatype. Use that to install.
Right Click on the Project --> Configure --> Convert to Maven Project.
It will show Maven Related Options.
After installing m2eclipse plugin, go to Window -> Preferences. Check "Maven" is enlisted at the left panel list
this happened to me because I imported a parent folder as a project. so all my projects where sub directories of this parent folder and not a project them selves. after deleting them (only) from the workspace and re importing them as separate projects, maven worked fine.
来源：https://stackoverflow.com/questions/10362166/maven-option-is-not-found-in-eclipse