In some cases the XDocumentInsertable.insertDocumentFromURL() causes OOo to
freeze if the provided URL can't be resolved. The problem only occurs when using
insertDocumentFromURL() from Java. Using StarBasic, there is a correct error
message that tells you that the provided URL can't be resolved.

Here is a code-examples:

import com.sun.star.beans.PropertyValue;
import com.sun.star.comp.helper.Bootstrap;
import com.sun.star.document.XDocumentInsertable;
import com.sun.star.frame.FrameSearchFlag;
import com.sun.star.frame.XComponentLoader;
import com.sun.star.lang.IllegalArgumentException;
import com.sun.star.lang.XComponent;
import com.sun.star.lang.XMultiComponentFactory;
import com.sun.star.text.XText;
import com.sun.star.text.XTextCursor;
import com.sun.star.text.XTextDocument;
import com.sun.star.uno.UnoRuntime;
import com.sun.star.uno.XComponentContext;

public class InsertDocumentFromURLTest {

   public static void main(String[] args) throws Exception {
       PropertyValue[] insertProps;

       // bootstrap and create Desktop
       XComponentContext xContext = Bootstrap.bootstrap();
       XMultiComponentFactory xMCF = xContext.getServiceManager();
       Object desktop = xMCF.createInstanceWithContext(
           "com.sun.star.frame.Desktop", xContext);

       // create empty document
       XComponentLoader xLoader = (XComponentLoader) UnoRuntime
           .queryInterface(XComponentLoader.class, desktop);
       XComponent doc = xLoader.loadComponentFromURL(
           "private:factory/swriter", "_blank", FrameSearchFlag.CREATE,
           new PropertyValue[0]);

       // create insertion-textcursor
       XTextDocument xTextDoc = (XTextDocument) UnoRuntime.queryInterface(
           XTextDocument.class, doc);
       XText xText = xTextDoc.getText();
       XTextCursor cursor = xText.createTextCursor();
       XDocumentInsertable xInsert = (XDocumentInsertable) UnoRuntime
           .queryInterface(XDocumentInsertable.class, cursor);

       System.out.println("test 1");

       // trying to insert a document with a non-existing file-URL
       // causes OOo to freeze IF the URL start with a drive letter "c:"
       insertProps = new PropertyValue[] {};
       xInsert.insertDocumentFromURL(
           "file:///c:/aFolder/aNonExistingFile", insertProps);

       System.out.println("test 2");

       // trying to insert a document with a non-existing file-URL
       // causes OOo to freeze IF the URL is an unresolved http-url.
       insertProps = new PropertyValue[] {};
       xInsert.insertDocumentFromURL(
           "http://www.michgibtswirklichnichtglaubichauchnicht.de/index.odt",
insertProps);

       System.out.println("finished!");
       System.exit(0);
   }
}