The ASN.1 OBJECT IDENTIFIER type is converted to a Java class that extends the Asn1ObjectIdentifier run-time class. This base class encapsulates the following public member variable:

   public int[] value;

The number of subidentifiers to be encoded or that were decoded is specified in the built-in length component of the array object (i.e., value.length).

The following shows the basic mapping from ASN.1 type to Java class definition:

ASN.1 Production

   <name> ::= OBJECT IDENTIFIER

Generated Java class

   public class <name> extends Asn1ObjectIdentifier {
      public <name> () {
         super();
      }
      public <name> (int[] value_) {
         super (value_);
      }
   }

This shows the class generated for a simple OBJECT IDENTIFIER assignment. If a tagged or constrained type is specified, specific encode and decode methods will be generated as well.