1	
     2	package descriptor;
     3	
     4	public abstract class AttributeDescriptor {
     5	    protected AttributeDescriptor(String column, Class cls,int type){
     6	        System.out.println("Call " + getClass().getName() + " 01");
     7	    }
     8	    protected AttributeDescriptor(String column, Class cls,Class type){
     9	        System.out.println("Call " + getClass().getName() + " 02");
    10	    }
    11	    protected AttributeDescriptor(String column, Class cls,Class user,Class remoteUser){
    12	        System.out.println("Call " + getClass().getName() + " 03");
    13	    }
    14	}