public static  void copyProperties(Project fromProject,
    Project toProject) 
{
        copyProperties( fromProject.getProperties(), toProject );
}

Copies all properties from the given project to the new project - omitting those that have already been set in the new project as well as properties named basedir or ant.file.

 public static  void copyProperties(Hashtable props,
    Project project) 
{
        Enumeration e = props.keys();
        while ( e.hasMoreElements() )
        {
            String key = e.nextElement().toString();
            if ( "basedir".equals( key ) || "ant.file".equals( key ) )
            {
                // basedir and ant.file get special treatment in execute()
                continue;
            }
            String value = props.get( key ).toString();
            // don't re-set user properties, avoid the warning message
            if ( project.getProperty( key ) == null )
            {
                // no user property
                project.setNewProperty( key, value );
            }
        }
}

Copies all properties from the given table to the new project - omitting those that have already been set in the new project as well as properties named basedir or ant.file.

 public static  void copyReferences(Project fromProject,
    Project toProject) 
{
        copyReferences( fromProject.getReferences(), toProject );
}

Copy references from one project to another.

 public static  void copyReferences(Hashtable refs,
    Project project) 
{
        Enumeration e = refs.keys();
        while ( e.hasMoreElements() )
        {
            String key = e.nextElement().toString();
            // don't overwrite existing references
            if ( project.getReference( key ) == null )
            {
                project.addReference( key, refs.get( key ) );
            }
        }
}

Copy references from a hashtable to a project. Will not overwrite existing references.