Getting an Attribute's Schema from the Directory
This example reads an attribute's schema from the directory. 

 
 try {
     // Get an attribute of that type
     Attributes attrs = ctx.getAttributes("cn=Ted Geisel,
       ou=People", new String[]{"cn"});
     Attribute cnAttr = attrs.get("cn");
     
     // Get its attribute definition
     DirContext cnSchema =
       cnAttr.getAttributeDefinition();
     
     // Get cnSchema's attributes
     Attributes cnAttrs = cnSchema.getAttributes("");
 } catch (NamingException e) {
 }