Automate import of Java (Android) projects into Eclipse workspace through commandline

Unfortunately, JDT distribution doesn't have any application that would support -import argument, like CDT's org.eclipse.cdt.managedbuilder.core.headlessbuild. But you can easily write a simple one:

package test.myapp;import java.util.LinkedList;import java.util.List;import org.eclipse.core.resources.IProject;import org.eclipse.core.resources.IProjectDescription;import org.eclipse.core.resources.IncrementalProjectBuilder;import org.eclipse.core.resources.ResourcesPlugin;import org.eclipse.core.runtime.NullProgressMonitor;import org.eclipse.core.runtime.Path;import org.eclipse.equinox.app.IApplication;import org.eclipse.equinox.app.IApplicationContext;public class Application implements IApplication {    public Object start(IApplicationContext context) throws Exception {        String[] args = (String[]) context.getArguments().get(IApplicationContext.APPLICATION_ARGS);        boolean build = false;        // Determine projects to import        List<String> projects = new LinkedList<String>();        for (int i = 0; i < args.length; ++i) {            if ("-import".equals(args[i]) && i + 1 < args.length) {                projects.add(args[++i]);            } else if ("-build".equals(args[i])) {                build = true;            }        }        if (projects.size() == 0) {            System.out.println("No projects to import!");        } else {            for (String projectPath : projects) {                System.out.println("Importing project from: " + projectPath);                // Import project description:                IProjectDescription description = ResourcesPlugin.getWorkspace().loadProjectDescription(                        new Path(projectPath).append(".project"));                IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(description.getName());                project.create(description, null);                project.open(null);            }            // Build all projects after importing            if (build) {                System.out.println("Re-building workspace");                ResourcesPlugin.getWorkspace().build(IncrementalProjectBuilder.CLEAN_BUILD, new NullProgressMonitor());                ResourcesPlugin.getWorkspace().build(IncrementalProjectBuilder.FULL_BUILD, new NullProgressMonitor());            }        }        return null;    }    public void stop() {    }}

Your plugin.xml should contain something like:

<?xml version="1.0" encoding="UTF-8"?><?eclipse version="3.4"?><plugin>   <extension         id="App"         point="org.eclipse.core.runtime.applications">      <application            cardinality="singleton-global"            thread="main"            visible="true">         <run               class="test.myapp.Application">         </run>      </application>   </extension></plugin>

Create, and export your plug-in as "test.myapp_1.0.0.jar". Then you can use it as follows:

1. Copy test.myapp_1.0.0.jar to your Eclipse/dropins/ folder

2. Copy all needed plug-ins to the target workspace directory:

   cp -r projects/* NewWorkspace/

3. Import needed projects into the workspace:

   eclipse -nosplash -application test.myapp.App -data NewWorkspace -import /path/to/NewWorkspace/project1 -import /path/to/NewWorkspace/project2 etc...

4. Now, you can safely remove test.myapp_1.0.0.jar from the Eclipse/dropins/ folder.

I've uploaded all the code, including the exported plug-in here: https://github.com/spektom/eclipse-import