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Java > Open Source Codes > org > jboss > cache > pojo > test > EnumPlanet


1 /*
2  * JBoss, Home of Professional Open Source.
3  * Copyright 2006, Red Hat Middleware LLC, and individual contributors
4  * as indicated by the @author tags. See the copyright.txt file in the
5  * distribution for a full listing of individual contributors.
6  *
7  * This is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU Lesser General Public License as
9  * published by the Free Software Foundation; either version 2.1 of
10  * the License, or (at your option) any later version.
11  *
12  * This software is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with this software; if not, write to the Free
19  * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20  * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21  */
22
23 package org.jboss.cache.pojo.test;
24
25 /**
26  * Test class for PojoCache Enum.
27  *
28  * @version $Revision: 1.2 $
29  * <p>Below is the annotation that signifies this class is "prepared" under JBossAop. This is used in
30  * conjunction with a special jboss-aop.xml (supplied by JBossCache). In addition, this is JDK1.4 style,
31  * so a annoc Ant build target is needed to pre-compile it.</p>
32  * <p>To use this approach, just apply this line to your pojo and run annoc (and possibly aopc).</p>
33  */
34 // We are using JDK1.5 annotation.
35 @org.jboss.cache.pojo.annotation.Replicable
36 public enum EnumPlanet
37 {
38    MERCURY(3.303e+23, 2.4397e6),
39    VENUS(4.869e+24, 6.0518e6),
40    EARTH(5.976e+24, 6.37814e6),
41    MARS(6.421e+23, 3.3972e6),
42    JUPITER(1.9e+27, 7.1492e7),
43    SATURN(5.688e+26, 6.0268e7),
44    URANUS(8.686e+25, 2.5559e7),
45    NEPTUNE(1.024e+26, 2.4746e7);
46
47    private double mass; // in kilograms
48 private double radius; // in meters
49
50    // Need this for PojoCache. Can be private as well!
51 EnumPlanet() {;}
52
53    EnumPlanet(double mass, double radius)
54    {
55       this.mass = mass;
56       this.radius = radius;
57    }
58
59    public double mass()
60    {
61       return mass;
62    }
63
64    public double radius()
65    {
66       return radius;
67    }
68
69    public void setMass(double mass)
70    {
71       this.mass = mass;
72    }
73
74    public void setRadius(double radius)
75    {
76       this.radius = radius;
77    }
78
79    // universal gravitational constant (m3 kg-1 s-2)
80 public static final double G = 6.67300E-11;
81
82    public double surfaceGravity()
83    {
84       return G * mass / (radius * radius);
85    }
86
87    public double surfaceWeight(double otherMass)
88    {
89       return otherMass * surfaceGravity();
90    }
91
92    public static void main(String JavaDoc[] args)
93    {
94       double earthWeight = Double.parseDouble(args[0]);
95       double mass = earthWeight / EARTH.surfaceGravity();
96       for (EnumPlanet p : EnumPlanet.values())
97          System.out.printf("Weight on %s is %f%n",
98                  p, p.surfaceWeight(mass));
99    }
100 }
101
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