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view libs/commons-math-2.1/docs/apidocs/src-html/org/apache/commons/math/MathException.html @ 13:cbf34dd4d7e6
commons-math-2.1 added
| author | dwinter |
|---|---|
| date | Tue, 04 Jan 2011 10:02:07 +0100 |
| parents | |
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<HTML> <BODY BGCOLOR="white"> <PRE> <FONT color="green">001</FONT> /*<a name="line.1"></a> <FONT color="green">002</FONT> * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a> <FONT color="green">003</FONT> * contributor license agreements. See the NOTICE file distributed with<a name="line.3"></a> <FONT color="green">004</FONT> * this work for additional information regarding copyright ownership.<a name="line.4"></a> <FONT color="green">005</FONT> * The ASF licenses this file to You under the Apache License, Version 2.0<a name="line.5"></a> <FONT color="green">006</FONT> * (the "License"); you may not use this file except in compliance with<a name="line.6"></a> <FONT color="green">007</FONT> * the License. You may obtain a copy of the License at<a name="line.7"></a> <FONT color="green">008</FONT> *<a name="line.8"></a> <FONT color="green">009</FONT> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a> <FONT color="green">010</FONT> *<a name="line.10"></a> <FONT color="green">011</FONT> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a> <FONT color="green">012</FONT> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a> <FONT color="green">013</FONT> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a> <FONT color="green">014</FONT> * See the License for the specific language governing permissions and<a name="line.14"></a> <FONT color="green">015</FONT> * limitations under the License.<a name="line.15"></a> <FONT color="green">016</FONT> */<a name="line.16"></a> <FONT color="green">017</FONT> package org.apache.commons.math;<a name="line.17"></a> <FONT color="green">018</FONT> <a name="line.18"></a> <FONT color="green">019</FONT> import java.io.PrintStream;<a name="line.19"></a> <FONT color="green">020</FONT> import java.io.PrintWriter;<a name="line.20"></a> <FONT color="green">021</FONT> import java.text.MessageFormat;<a name="line.21"></a> <FONT color="green">022</FONT> import java.util.Locale;<a name="line.22"></a> <FONT color="green">023</FONT> import java.util.MissingResourceException;<a name="line.23"></a> <FONT color="green">024</FONT> import java.util.ResourceBundle;<a name="line.24"></a> <FONT color="green">025</FONT> <a name="line.25"></a> <FONT color="green">026</FONT> <a name="line.26"></a> <FONT color="green">027</FONT> /**<a name="line.27"></a> <FONT color="green">028</FONT> * Base class for commons-math checked exceptions.<a name="line.28"></a> <FONT color="green">029</FONT> * <p><a name="line.29"></a> <FONT color="green">030</FONT> * Supports nesting, emulating JDK 1.4 behavior if necessary.</p><a name="line.30"></a> <FONT color="green">031</FONT> * <p><a name="line.31"></a> <FONT color="green">032</FONT> * Adapted from <a href="http://commons.apache.org/collections/api-release/org/apache/commons/collections/FunctorException.html"/>.</p><a name="line.32"></a> <FONT color="green">033</FONT> *<a name="line.33"></a> <FONT color="green">034</FONT> * @version $Revision: 822850 $ $Date: 2009-10-07 14:56:42 -0400 (Wed, 07 Oct 2009) $<a name="line.34"></a> <FONT color="green">035</FONT> */<a name="line.35"></a> <FONT color="green">036</FONT> public class MathException extends Exception {<a name="line.36"></a> <FONT color="green">037</FONT> <a name="line.37"></a> <FONT color="green">038</FONT> /** Serializable version identifier. */<a name="line.38"></a> <FONT color="green">039</FONT> private static final long serialVersionUID = -9004610152740737812L;<a name="line.39"></a> <FONT color="green">040</FONT> <a name="line.40"></a> <FONT color="green">041</FONT> /**<a name="line.41"></a> <FONT color="green">042</FONT> * Pattern used to build the message.<a name="line.42"></a> <FONT color="green">043</FONT> */<a name="line.43"></a> <FONT color="green">044</FONT> private final String pattern;<a name="line.44"></a> <FONT color="green">045</FONT> <a name="line.45"></a> <FONT color="green">046</FONT> /**<a name="line.46"></a> <FONT color="green">047</FONT> * Arguments used to build the message.<a name="line.47"></a> <FONT color="green">048</FONT> */<a name="line.48"></a> <FONT color="green">049</FONT> private final Object[] arguments;<a name="line.49"></a> <FONT color="green">050</FONT> <a name="line.50"></a> <FONT color="green">051</FONT> /**<a name="line.51"></a> <FONT color="green">052</FONT> * Constructs a new <code>MathException</code> with no<a name="line.52"></a> <FONT color="green">053</FONT> * detail message.<a name="line.53"></a> <FONT color="green">054</FONT> */<a name="line.54"></a> <FONT color="green">055</FONT> public MathException() {<a name="line.55"></a> <FONT color="green">056</FONT> this.pattern = null;<a name="line.56"></a> <FONT color="green">057</FONT> this.arguments = new Object[0];<a name="line.57"></a> <FONT color="green">058</FONT> }<a name="line.58"></a> <FONT color="green">059</FONT> <a name="line.59"></a> <FONT color="green">060</FONT> /**<a name="line.60"></a> <FONT color="green">061</FONT> * Constructs a new <code>MathException</code> with specified<a name="line.61"></a> <FONT color="green">062</FONT> * formatted detail message.<a name="line.62"></a> <FONT color="green">063</FONT> * Message formatting is delegated to {@link java.text.MessageFormat}.<a name="line.63"></a> <FONT color="green">064</FONT> * @param pattern format specifier<a name="line.64"></a> <FONT color="green">065</FONT> * @param arguments format arguments<a name="line.65"></a> <FONT color="green">066</FONT> */<a name="line.66"></a> <FONT color="green">067</FONT> public MathException(String pattern, Object ... arguments) {<a name="line.67"></a> <FONT color="green">068</FONT> this.pattern = pattern;<a name="line.68"></a> <FONT color="green">069</FONT> this.arguments = (arguments == null) ? new Object[0] : arguments.clone();<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> /**<a name="line.72"></a> <FONT color="green">073</FONT> * Constructs a new <code>MathException</code> with specified<a name="line.73"></a> <FONT color="green">074</FONT> * nested <code>Throwable</code> root cause.<a name="line.74"></a> <FONT color="green">075</FONT> *<a name="line.75"></a> <FONT color="green">076</FONT> * @param rootCause the exception or error that caused this exception<a name="line.76"></a> <FONT color="green">077</FONT> * to be thrown.<a name="line.77"></a> <FONT color="green">078</FONT> */<a name="line.78"></a> <FONT color="green">079</FONT> public MathException(Throwable rootCause) {<a name="line.79"></a> <FONT color="green">080</FONT> super(rootCause);<a name="line.80"></a> <FONT color="green">081</FONT> this.pattern = getMessage();<a name="line.81"></a> <FONT color="green">082</FONT> this.arguments = new Object[0];<a name="line.82"></a> <FONT color="green">083</FONT> }<a name="line.83"></a> <FONT color="green">084</FONT> <a name="line.84"></a> <FONT color="green">085</FONT> /**<a name="line.85"></a> <FONT color="green">086</FONT> * Constructs a new <code>MathException</code> with specified<a name="line.86"></a> <FONT color="green">087</FONT> * formatted detail message and nested <code>Throwable</code> root cause.<a name="line.87"></a> <FONT color="green">088</FONT> * Message formatting is delegated to {@link java.text.MessageFormat}.<a name="line.88"></a> <FONT color="green">089</FONT> * @param rootCause the exception or error that caused this exception<a name="line.89"></a> <FONT color="green">090</FONT> * to be thrown.<a name="line.90"></a> <FONT color="green">091</FONT> * @param pattern format specifier<a name="line.91"></a> <FONT color="green">092</FONT> * @param arguments format arguments<a name="line.92"></a> <FONT color="green">093</FONT> * @since 1.2<a name="line.93"></a> <FONT color="green">094</FONT> */<a name="line.94"></a> <FONT color="green">095</FONT> public MathException(Throwable rootCause, String pattern, Object ... arguments) {<a name="line.95"></a> <FONT color="green">096</FONT> super(rootCause);<a name="line.96"></a> <FONT color="green">097</FONT> this.pattern = pattern;<a name="line.97"></a> <FONT color="green">098</FONT> this.arguments = (arguments == null) ? new Object[0] : arguments.clone();<a name="line.98"></a> <FONT color="green">099</FONT> }<a name="line.99"></a> <FONT color="green">100</FONT> <a name="line.100"></a> <FONT color="green">101</FONT> /**<a name="line.101"></a> <FONT color="green">102</FONT> * Translate a string to a given locale.<a name="line.102"></a> <FONT color="green">103</FONT> * @param s string to translate<a name="line.103"></a> <FONT color="green">104</FONT> * @param locale locale into which to translate the string<a name="line.104"></a> <FONT color="green">105</FONT> * @return translated string or original string<a name="line.105"></a> <FONT color="green">106</FONT> * for unsupported locales or unknown strings<a name="line.106"></a> <FONT color="green">107</FONT> */<a name="line.107"></a> <FONT color="green">108</FONT> private static String translate(String s, Locale locale) {<a name="line.108"></a> <FONT color="green">109</FONT> try {<a name="line.109"></a> <FONT color="green">110</FONT> ResourceBundle bundle =<a name="line.110"></a> <FONT color="green">111</FONT> ResourceBundle.getBundle("org.apache.commons.math.MessagesResources", locale);<a name="line.111"></a> <FONT color="green">112</FONT> if (bundle.getLocale().getLanguage().equals(locale.getLanguage())) {<a name="line.112"></a> <FONT color="green">113</FONT> // the value of the resource is the translated string<a name="line.113"></a> <FONT color="green">114</FONT> return bundle.getString(s);<a name="line.114"></a> <FONT color="green">115</FONT> }<a name="line.115"></a> <FONT color="green">116</FONT> <a name="line.116"></a> <FONT color="green">117</FONT> } catch (MissingResourceException mre) {<a name="line.117"></a> <FONT color="green">118</FONT> // do nothing here<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> // the locale is not supported or the resource is unknown<a name="line.121"></a> <FONT color="green">122</FONT> // don't translate and fall back to using the string as is<a name="line.122"></a> <FONT color="green">123</FONT> return s;<a name="line.123"></a> <FONT color="green">124</FONT> <a name="line.124"></a> <FONT color="green">125</FONT> }<a name="line.125"></a> <FONT color="green">126</FONT> <a name="line.126"></a> <FONT color="green">127</FONT> /** Gets the pattern used to build the message of this throwable.<a name="line.127"></a> <FONT color="green">128</FONT> *<a name="line.128"></a> <FONT color="green">129</FONT> * @return the pattern used to build the message of this throwable<a name="line.129"></a> <FONT color="green">130</FONT> * @since 1.2<a name="line.130"></a> <FONT color="green">131</FONT> */<a name="line.131"></a> <FONT color="green">132</FONT> public String getPattern() {<a name="line.132"></a> <FONT color="green">133</FONT> return pattern;<a name="line.133"></a> <FONT color="green">134</FONT> }<a name="line.134"></a> <FONT color="green">135</FONT> <a name="line.135"></a> <FONT color="green">136</FONT> /** Gets the arguments used to build the message of this throwable.<a name="line.136"></a> <FONT color="green">137</FONT> *<a name="line.137"></a> <FONT color="green">138</FONT> * @return the arguments used to build the message of this throwable<a name="line.138"></a> <FONT color="green">139</FONT> * @since 1.2<a name="line.139"></a> <FONT color="green">140</FONT> */<a name="line.140"></a> <FONT color="green">141</FONT> public Object[] getArguments() {<a name="line.141"></a> <FONT color="green">142</FONT> return arguments.clone();<a name="line.142"></a> <FONT color="green">143</FONT> }<a name="line.143"></a> <FONT color="green">144</FONT> <a name="line.144"></a> <FONT color="green">145</FONT> /** Gets the message in a specified locale.<a name="line.145"></a> <FONT color="green">146</FONT> *<a name="line.146"></a> <FONT color="green">147</FONT> * @param locale Locale in which the message should be translated<a name="line.147"></a> <FONT color="green">148</FONT> *<a name="line.148"></a> <FONT color="green">149</FONT> * @return localized message<a name="line.149"></a> <FONT color="green">150</FONT> * @since 1.2<a name="line.150"></a> <FONT color="green">151</FONT> */<a name="line.151"></a> <FONT color="green">152</FONT> public String getMessage(final Locale locale) {<a name="line.152"></a> <FONT color="green">153</FONT> return (pattern == null) ? "" : new MessageFormat(translate(pattern, locale), locale).format(arguments);<a name="line.153"></a> <FONT color="green">154</FONT> }<a name="line.154"></a> <FONT color="green">155</FONT> <a name="line.155"></a> <FONT color="green">156</FONT> /** {@inheritDoc} */<a name="line.156"></a> <FONT color="green">157</FONT> @Override<a name="line.157"></a> <FONT color="green">158</FONT> public String getMessage() {<a name="line.158"></a> <FONT color="green">159</FONT> return getMessage(Locale.US);<a name="line.159"></a> <FONT color="green">160</FONT> }<a name="line.160"></a> <FONT color="green">161</FONT> <a name="line.161"></a> <FONT color="green">162</FONT> /** {@inheritDoc} */<a name="line.162"></a> <FONT color="green">163</FONT> @Override<a name="line.163"></a> <FONT color="green">164</FONT> public String getLocalizedMessage() {<a name="line.164"></a> <FONT color="green">165</FONT> return getMessage(Locale.getDefault());<a name="line.165"></a> <FONT color="green">166</FONT> }<a name="line.166"></a> <FONT color="green">167</FONT> <a name="line.167"></a> <FONT color="green">168</FONT> /**<a name="line.168"></a> <FONT color="green">169</FONT> * Prints the stack trace of this exception to the standard error stream.<a name="line.169"></a> <FONT color="green">170</FONT> */<a name="line.170"></a> <FONT color="green">171</FONT> @Override<a name="line.171"></a> <FONT color="green">172</FONT> public void printStackTrace() {<a name="line.172"></a> <FONT color="green">173</FONT> printStackTrace(System.err);<a name="line.173"></a> <FONT color="green">174</FONT> }<a name="line.174"></a> <FONT color="green">175</FONT> <a name="line.175"></a> <FONT color="green">176</FONT> /**<a name="line.176"></a> <FONT color="green">177</FONT> * Prints the stack trace of this exception to the specified stream.<a name="line.177"></a> <FONT color="green">178</FONT> *<a name="line.178"></a> <FONT color="green">179</FONT> * @param out the <code>PrintStream</code> to use for output<a name="line.179"></a> <FONT color="green">180</FONT> */<a name="line.180"></a> <FONT color="green">181</FONT> @Override<a name="line.181"></a> <FONT color="green">182</FONT> public void printStackTrace(PrintStream out) {<a name="line.182"></a> <FONT color="green">183</FONT> synchronized (out) {<a name="line.183"></a> <FONT color="green">184</FONT> PrintWriter pw = new PrintWriter(out, false);<a name="line.184"></a> <FONT color="green">185</FONT> printStackTrace(pw);<a name="line.185"></a> <FONT color="green">186</FONT> // Flush the PrintWriter before it's GC'ed.<a name="line.186"></a> <FONT color="green">187</FONT> pw.flush();<a name="line.187"></a> <FONT color="green">188</FONT> }<a name="line.188"></a> <FONT color="green">189</FONT> }<a name="line.189"></a> <FONT color="green">190</FONT> <a name="line.190"></a> <FONT color="green">191</FONT> }<a name="line.191"></a> </PRE> </BODY> </HTML>