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Java > Open Source Codes > com > sun > jdo > api > persistence > enhancer > classfile > ConstDouble


1 /*
2  * The contents of this file are subject to the terms
3  * of the Common Development and Distribution License
4  * (the License). You may not use this file except in
5  * compliance with the License.
6  *
7  * You can obtain a copy of the license at
8  * https://glassfish.dev.java.net/public/CDDLv1.0.html or
9  * glassfish/bootstrap/legal/CDDLv1.0.txt.
10  * See the License for the specific language governing
11  * permissions and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL
14  * Header Notice in each file and include the License file
15  * at glassfish/bootstrap/legal/CDDLv1.0.txt.
16  * If applicable, add the following below the CDDL Header,
17  * with the fields enclosed by brackets [] replaced by
18  * you own identifying information:
19  * "Portions Copyrighted [year] [name of copyright owner]"
20  *
21  * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
22  */
23
24
25 package com.sun.jdo.api.persistence.enhancer.classfile;
26
27 import java.io.*;
28
29 /**
30  * Class representing a double constant in the constant pool of a class file
31  */
32
33 public class ConstDouble extends ConstValue {
34   /* The tag value associated with ConstDouble */
35   public static final int MyTag = CONSTANTDouble;
36
37   /* The value */
38   private double doubleValue;
39
40   /* public accessors */
41
42   /**
43    * The tag of this constant entry
44    */
45   public int tag () {
46     return MyTag;
47   }
48
49   /**
50    * return the value associated with the entry
51    */
52   public double value() {
53     return doubleValue;
54   }
55
56   /**
57    * Return the descriptor string for the constant type.
58    */
59   public String JavaDoc descriptor() {
60       return "D";//NOI18N
61 }
62
63   /**
64    * A printable representation
65    */
66   public String JavaDoc toString () {
67       return "CONSTANTDouble(" + indexAsString() + "): " + //NOI18N
68 "doubleValue(" + Double.toString(doubleValue) + ")";//NOI18N
69 }
70
71   /* package local methods */
72
73   /**
74    * Construct a ConstDouble object
75    */
76   ConstDouble (double f) {
77     doubleValue = f;
78   }
79
80   void formatData (DataOutputStream b) throws IOException {
81     b.writeDouble(doubleValue);
82   }
83
84   static ConstDouble read (DataInputStream input) throws IOException {
85     return new ConstDouble (input.readDouble());
86   }
87
88   void resolve (ConstantPool p) { }
89 }
90
91
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