[pde-dev] NullPointerException when creating IProgressMonitor!!!

["邹志乐" <zouzhile@xxxxxxx>]

Hi,as you know,eclipse provides us a class "org.eclipse.ant.core.AntRunner",with this class,we can run ant tasks from our program.To make a quick start,i just added all the needed jar files to my project,and i wrote a class to create an IProgressMonitor instance and to run a simple ant task,the code is below:

package robin.task1;

import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;
import org.eclipse.ant.core.AntCorePlugin;
import org.eclipse.core.runtime.IProgressMonitor;

import java.util.Hashtable;
/**
 * @author Robin Zou
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
public class IProgressMonitorCreator extends Task
{
   public IProgressMonitor create()
   {
       IProgressMonitor monitor=null;
       try
       {
          monitor=(IProgressMonitor)getProject().getReferences().
                                    get(AntCorePlugin.ECLIPSE_PROGRESS_MONITOR);
       }
       catch(BuildException be)
       {
           be.printStackTrace();
       }
       return monitor;
   }
}

But every time,there is a NullPointerException which indicates that the "getProject()" returns a null object.I don't know why.is it that such code only works with plugin,not general java project code?Please help!
Best Regards:)

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