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| <FONT color="green">001</FONT> /*<a name="line.1"></a> |
| <FONT color="green">002</FONT> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <FONT color="green">003</FONT> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <FONT color="green">004</FONT> * distributed with this work for additional information<a name="line.4"></a> |
| <FONT color="green">005</FONT> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <FONT color="green">006</FONT> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <FONT color="green">007</FONT> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <FONT color="green">008</FONT> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <FONT color="green">009</FONT> *<a name="line.9"></a> |
| <FONT color="green">010</FONT> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <FONT color="green">011</FONT> *<a name="line.11"></a> |
| <FONT color="green">012</FONT> * Unless required by applicable law or agreed to in writing,<a name="line.12"></a> |
| <FONT color="green">013</FONT> * software distributed under the License is distributed on an<a name="line.13"></a> |
| <FONT color="green">014</FONT> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.14"></a> |
| <FONT color="green">015</FONT> * KIND, either express or implied. See the License for the<a name="line.15"></a> |
| <FONT color="green">016</FONT> * specific language governing permissions and limitations<a name="line.16"></a> |
| <FONT color="green">017</FONT> * under the License.<a name="line.17"></a> |
| <FONT color="green">018</FONT> */<a name="line.18"></a> |
| <FONT color="green">019</FONT> package org.apache.shiro.util;<a name="line.19"></a> |
| <FONT color="green">020</FONT> <a name="line.20"></a> |
| <FONT color="green">021</FONT> /**<a name="line.21"></a> |
| <FONT color="green">022</FONT> * Internal helper class used to find the Java/JDK version<a name="line.22"></a> |
| <FONT color="green">023</FONT> * that Shiro is operating within, to allow for automatically<a name="line.23"></a> |
| <FONT color="green">024</FONT> * adapting to the present platform's capabilities.<a name="line.24"></a> |
| <FONT color="green">025</FONT> *<a name="line.25"></a> |
| <FONT color="green">026</FONT> * <p>Note that Shiro does not support 1.2 or earlier JVMs - only 1.3 and later.<a name="line.26"></a> |
| <FONT color="green">027</FONT> *<a name="line.27"></a> |
| <FONT color="green">028</FONT> * <p><em>This class was borrowed and heavily based upon a nearly identical version found in<a name="line.28"></a> |
| <FONT color="green">029</FONT> * the <a href="http://www.springframework.org/">Spring Framework</a>, with minor modifications.<a name="line.29"></a> |
| <FONT color="green">030</FONT> * The original author names and copyright (Apache 2.0) has been left in place. A special<a name="line.30"></a> |
| <FONT color="green">031</FONT> * thanks to Rod Johnson, Juergen Hoeller, and Rick Evans for making this available.</em><a name="line.31"></a> |
| <FONT color="green">032</FONT> *<a name="line.32"></a> |
| <FONT color="green">033</FONT> * @since 0.2<a name="line.33"></a> |
| <FONT color="green">034</FONT> */<a name="line.34"></a> |
| <FONT color="green">035</FONT> public abstract class JavaEnvironment {<a name="line.35"></a> |
| <FONT color="green">036</FONT> <a name="line.36"></a> |
| <FONT color="green">037</FONT> /**<a name="line.37"></a> |
| <FONT color="green">038</FONT> * Constant identifying the 1.3.x JVM (JDK 1.3).<a name="line.38"></a> |
| <FONT color="green">039</FONT> */<a name="line.39"></a> |
| <FONT color="green">040</FONT> public static final int JAVA_13 = 0;<a name="line.40"></a> |
| <FONT color="green">041</FONT> <a name="line.41"></a> |
| <FONT color="green">042</FONT> /**<a name="line.42"></a> |
| <FONT color="green">043</FONT> * Constant identifying the 1.4.x JVM (J2SE 1.4).<a name="line.43"></a> |
| <FONT color="green">044</FONT> */<a name="line.44"></a> |
| <FONT color="green">045</FONT> public static final int JAVA_14 = 1;<a name="line.45"></a> |
| <FONT color="green">046</FONT> <a name="line.46"></a> |
| <FONT color="green">047</FONT> /**<a name="line.47"></a> |
| <FONT color="green">048</FONT> * Constant identifying the 1.5 JVM (Java 5).<a name="line.48"></a> |
| <FONT color="green">049</FONT> */<a name="line.49"></a> |
| <FONT color="green">050</FONT> public static final int JAVA_15 = 2;<a name="line.50"></a> |
| <FONT color="green">051</FONT> <a name="line.51"></a> |
| <FONT color="green">052</FONT> /**<a name="line.52"></a> |
| <FONT color="green">053</FONT> * Constant identifying the 1.6 JVM (Java 6).<a name="line.53"></a> |
| <FONT color="green">054</FONT> */<a name="line.54"></a> |
| <FONT color="green">055</FONT> public static final int JAVA_16 = 3;<a name="line.55"></a> |
| <FONT color="green">056</FONT> <a name="line.56"></a> |
| <FONT color="green">057</FONT> /**<a name="line.57"></a> |
| <FONT color="green">058</FONT> * Constant identifying the 1.7 JVM.<a name="line.58"></a> |
| <FONT color="green">059</FONT> */<a name="line.59"></a> |
| <FONT color="green">060</FONT> public static final int JAVA_17 = 4;<a name="line.60"></a> |
| <FONT color="green">061</FONT> <a name="line.61"></a> |
| <FONT color="green">062</FONT> /** The virtual machine version, i.e. <code>System.getProperty("java.version");</code>. */<a name="line.62"></a> |
| <FONT color="green">063</FONT> private static final String version;<a name="line.63"></a> |
| <FONT color="green">064</FONT> <a name="line.64"></a> |
| <FONT color="green">065</FONT> /**<a name="line.65"></a> |
| <FONT color="green">066</FONT> * The virtual machine <em>major</em> version. For example, with a <code>version</code> of<a name="line.66"></a> |
| <FONT color="green">067</FONT> * <code>1.5.6_10</code>, this would be <code>1.5</code><a name="line.67"></a> |
| <FONT color="green">068</FONT> */<a name="line.68"></a> |
| <FONT color="green">069</FONT> private static final int majorVersion;<a name="line.69"></a> |
| <FONT color="green">070</FONT> <a name="line.70"></a> |
| <FONT color="green">071</FONT> /**<a name="line.71"></a> |
| <FONT color="green">072</FONT> * Static code initialization block that sets the<a name="line.72"></a> |
| <FONT color="green">073</FONT> * <code>version</code> and <code>majorVersion</code> Class constants<a name="line.73"></a> |
| <FONT color="green">074</FONT> * upon initialization.<a name="line.74"></a> |
| <FONT color="green">075</FONT> */<a name="line.75"></a> |
| <FONT color="green">076</FONT> static {<a name="line.76"></a> |
| <FONT color="green">077</FONT> version = System.getProperty("java.version");<a name="line.77"></a> |
| <FONT color="green">078</FONT> // version String should look like "1.4.2_10"<a name="line.78"></a> |
| <FONT color="green">079</FONT> if (version.indexOf("1.7.") != -1) {<a name="line.79"></a> |
| <FONT color="green">080</FONT> majorVersion = JAVA_17;<a name="line.80"></a> |
| <FONT color="green">081</FONT> } else if (version.indexOf("1.6.") != -1) {<a name="line.81"></a> |
| <FONT color="green">082</FONT> majorVersion = JAVA_16;<a name="line.82"></a> |
| <FONT color="green">083</FONT> } else if (version.indexOf("1.5.") != -1) {<a name="line.83"></a> |
| <FONT color="green">084</FONT> majorVersion = JAVA_15;<a name="line.84"></a> |
| <FONT color="green">085</FONT> } else if (version.indexOf("1.4.") != -1) {<a name="line.85"></a> |
| <FONT color="green">086</FONT> majorVersion = JAVA_14;<a name="line.86"></a> |
| <FONT color="green">087</FONT> } else {<a name="line.87"></a> |
| <FONT color="green">088</FONT> // else leave 1.3 as default (it's either 1.3 or unknown)<a name="line.88"></a> |
| <FONT color="green">089</FONT> majorVersion = JAVA_13;<a name="line.89"></a> |
| <FONT color="green">090</FONT> }<a name="line.90"></a> |
| <FONT color="green">091</FONT> }<a name="line.91"></a> |
| <FONT color="green">092</FONT> <a name="line.92"></a> |
| <FONT color="green">093</FONT> <a name="line.93"></a> |
| <FONT color="green">094</FONT> /**<a name="line.94"></a> |
| <FONT color="green">095</FONT> * Return the full Java version string, as returned by<a name="line.95"></a> |
| <FONT color="green">096</FONT> * <code>System.getProperty("java.version")</code>.<a name="line.96"></a> |
| <FONT color="green">097</FONT> *<a name="line.97"></a> |
| <FONT color="green">098</FONT> * @return the full Java version string<a name="line.98"></a> |
| <FONT color="green">099</FONT> * @see System#getProperty(String)<a name="line.99"></a> |
| <FONT color="green">100</FONT> */<a name="line.100"></a> |
| <FONT color="green">101</FONT> public static String getVersion() {<a name="line.101"></a> |
| <FONT color="green">102</FONT> return version;<a name="line.102"></a> |
| <FONT color="green">103</FONT> }<a name="line.103"></a> |
| <FONT color="green">104</FONT> <a name="line.104"></a> |
| <FONT color="green">105</FONT> /**<a name="line.105"></a> |
| <FONT color="green">106</FONT> * Get the major version code. This means we can do things like<a name="line.106"></a> |
| <FONT color="green">107</FONT> * <code>if (getMajorVersion() < JAVA_14)</code>.<a name="line.107"></a> |
| <FONT color="green">108</FONT> *<a name="line.108"></a> |
| <FONT color="green">109</FONT> * @return a code comparable to the JAVA_XX codes in this class<a name="line.109"></a> |
| <FONT color="green">110</FONT> * @see #JAVA_13<a name="line.110"></a> |
| <FONT color="green">111</FONT> * @see #JAVA_14<a name="line.111"></a> |
| <FONT color="green">112</FONT> * @see #JAVA_15<a name="line.112"></a> |
| <FONT color="green">113</FONT> * @see #JAVA_16<a name="line.113"></a> |
| <FONT color="green">114</FONT> * @see #JAVA_17<a name="line.114"></a> |
| <FONT color="green">115</FONT> */<a name="line.115"></a> |
| <FONT color="green">116</FONT> public static int getMajorVersion() {<a name="line.116"></a> |
| <FONT color="green">117</FONT> return majorVersion;<a name="line.117"></a> |
| <FONT color="green">118</FONT> }<a name="line.118"></a> |
| <FONT color="green">119</FONT> <a name="line.119"></a> |
| <FONT color="green">120</FONT> /**<a name="line.120"></a> |
| <FONT color="green">121</FONT> * Convenience method to determine if the current JVM is at least Java 1.4.<a name="line.121"></a> |
| <FONT color="green">122</FONT> *<a name="line.122"></a> |
| <FONT color="green">123</FONT> * @return <code>true</code> if the current JVM is at least Java 1.4<a name="line.123"></a> |
| <FONT color="green">124</FONT> * @see #getMajorVersion()<a name="line.124"></a> |
| <FONT color="green">125</FONT> * @see #JAVA_14<a name="line.125"></a> |
| <FONT color="green">126</FONT> * @see #JAVA_15<a name="line.126"></a> |
| <FONT color="green">127</FONT> * @see #JAVA_16<a name="line.127"></a> |
| <FONT color="green">128</FONT> * @see #JAVA_17<a name="line.128"></a> |
| <FONT color="green">129</FONT> */<a name="line.129"></a> |
| <FONT color="green">130</FONT> public static boolean isAtLeastVersion14() {<a name="line.130"></a> |
| <FONT color="green">131</FONT> return getMajorVersion() >= JAVA_14;<a name="line.131"></a> |
| <FONT color="green">132</FONT> }<a name="line.132"></a> |
| <FONT color="green">133</FONT> <a name="line.133"></a> |
| <FONT color="green">134</FONT> /**<a name="line.134"></a> |
| <FONT color="green">135</FONT> * Convenience method to determine if the current JVM is at least<a name="line.135"></a> |
| <FONT color="green">136</FONT> * Java 1.5 (Java 5).<a name="line.136"></a> |
| <FONT color="green">137</FONT> *<a name="line.137"></a> |
| <FONT color="green">138</FONT> * @return <code>true</code> if the current JVM is at least Java 1.5<a name="line.138"></a> |
| <FONT color="green">139</FONT> * @see #getMajorVersion()<a name="line.139"></a> |
| <FONT color="green">140</FONT> * @see #JAVA_15<a name="line.140"></a> |
| <FONT color="green">141</FONT> * @see #JAVA_16<a name="line.141"></a> |
| <FONT color="green">142</FONT> * @see #JAVA_17<a name="line.142"></a> |
| <FONT color="green">143</FONT> */<a name="line.143"></a> |
| <FONT color="green">144</FONT> public static boolean isAtLeastVersion15() {<a name="line.144"></a> |
| <FONT color="green">145</FONT> return getMajorVersion() >= JAVA_15;<a name="line.145"></a> |
| <FONT color="green">146</FONT> }<a name="line.146"></a> |
| <FONT color="green">147</FONT> <a name="line.147"></a> |
| <FONT color="green">148</FONT> /**<a name="line.148"></a> |
| <FONT color="green">149</FONT> * Convenience method to determine if the current JVM is at least<a name="line.149"></a> |
| <FONT color="green">150</FONT> * Java 1.6 (Java 6).<a name="line.150"></a> |
| <FONT color="green">151</FONT> *<a name="line.151"></a> |
| <FONT color="green">152</FONT> * @return <code>true</code> if the current JVM is at least Java 1.6<a name="line.152"></a> |
| <FONT color="green">153</FONT> * @see #getMajorVersion()<a name="line.153"></a> |
| <FONT color="green">154</FONT> * @see #JAVA_15<a name="line.154"></a> |
| <FONT color="green">155</FONT> * @see #JAVA_16<a name="line.155"></a> |
| <FONT color="green">156</FONT> * @see #JAVA_17<a name="line.156"></a> |
| <FONT color="green">157</FONT> *<a name="line.157"></a> |
| <FONT color="green">158</FONT> * @since 1.2<a name="line.158"></a> |
| <FONT color="green">159</FONT> */<a name="line.159"></a> |
| <FONT color="green">160</FONT> public static boolean isAtLeastVersion16() {<a name="line.160"></a> |
| <FONT color="green">161</FONT> return getMajorVersion() >= JAVA_16;<a name="line.161"></a> |
| <FONT color="green">162</FONT> }<a name="line.162"></a> |
| <FONT color="green">163</FONT> }<a name="line.163"></a> |
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| </PRE> |
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