View Javadoc
1   /*
2    * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
3    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4    *
5    * This code is free software; you can redistribute it and/or modify it
6    * under the terms of the GNU General Public License version 2 only, as
7    * published by the Free Software Foundation.  Oracle designates this
8    * particular file as subject to the "Classpath" exception as provided
9    * by Oracle in the LICENSE file that accompanied this code.
10   *
11   * This code is distributed in the hope that it will be useful, but WITHOUT
12   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14   * version 2 for more details (a copy is included in the LICENSE file that
15   * accompanied this code).
16   *
17   * You should have received a copy of the GNU General Public License version
18   * 2 along with this work; if not, write to the Free Software Foundation,
19   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20   *
21   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22   * or visit www.oracle.com if you need additional information or have any
23   * questions.
24   */
25  
26  package com.sun.codemodel.internal;
27  
28  import java.util.Collections;
29  import java.util.Iterator;
30  import java.util.List;
31  
32  /**
33   * Special class object that represents the type of "null".
34   *
35   * <p>
36   * Use this class with care.
37   *
38   * @author
39   *      Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
40   */
41  public final class JNullType extends JClass {
42  
43      JNullType(JCodeModel _owner) {
44          super(_owner);
45      }
46  
47      public String name() { return "null"; }
48      public String fullName() { return "null"; }
49  
50      public JPackage _package() { return owner()._package(""); }
51  
52      public JClass _extends() { return null; }
53  
54      public Iterator<JClass> _implements() {
55          return Collections.<JClass>emptyList().iterator();
56      }
57  
58      public boolean isInterface() { return false; }
59      public boolean isAbstract() { return false; }
60  
61      protected JClass substituteParams(JTypeVar[] variables, List<JClass> bindings) {
62          return this;
63      }
64  }