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<div class="subTitle">ch.hevs.isi.utils</div>
<h2 title="Class Utility" class="title">Class Utility</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
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<pre>public class <span class="typeNameLabel">Utility</span>
extends java.lang.Object</pre>
<div class="block">This class contains some useful Java methods to manipulate Modbus data.</div>
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<h3>Field Summary</h3>
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<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
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<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#DEBUG_MODE">DEBUG_MODE</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static java.util.Random</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#rnd">rnd</a></span></code>
<div class="block">Object to get some random values...</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#TCP_BUFFER_SIZE">TCP_BUFFER_SIZE</a></span></code>
<div class="block">Default size for the TCP input stream</div>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#Utility--">Utility</a></span>()</code>&nbsp;</td>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<td class="colFirst"><code>static java.lang.Float</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#bytesToFloat-byte:A-int-int-">bytesToFloat</a></span>(byte[]&nbsp;bytes,
int&nbsp;offset,
int&nbsp;size)</code>
<div class="block">Returns a <code>float</code> value from array of bytes.</div>
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</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>static byte[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#calculateCRC-byte:A-int-int-">calculateCRC</a></span>(byte[]&nbsp;data,
int&nbsp;offset,
int&nbsp;len)</code>
<div class="block">Calculates and returns the CRC using the data passed in parameters.</div>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#checkCRC-byte:A-int-int-byte:A-">checkCRC</a></span>(byte[]&nbsp;data,
int&nbsp;offset,
int&nbsp;len,
byte[]&nbsp;crc)</code>
<div class="block">Checks the CRC and returns true if it is correct, otherwise false.</div>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#DEBUG-java.lang.Object-java.lang.String-java.lang.String-">DEBUG</a></span>(java.lang.Object&nbsp;object,
java.lang.String&nbsp;method,
java.lang.String&nbsp;msg)</code>&nbsp;</td>
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<tr id="i4" class="altColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#DEBUG-java.lang.String-java.lang.String-java.lang.String-">DEBUG</a></span>(java.lang.String&nbsp;className,
java.lang.String&nbsp;method,
java.lang.String&nbsp;msg)</code>&nbsp;</td>
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<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#DEBUG-java.lang.String-java.lang.String-java.lang.String-java.lang.String-">DEBUG</a></span>(java.lang.String&nbsp;packageName,
java.lang.String&nbsp;className,
java.lang.String&nbsp;method,
java.lang.String&nbsp;msg)</code>&nbsp;</td>
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<tr id="i6" class="altColor">
<td class="colFirst"><code>static java.io.BufferedReader</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#fileParser-java.lang.String-java.lang.String-">fileParser</a></span>(java.lang.String&nbsp;pathName,
java.lang.String&nbsp;fileName)</code>
<div class="block">Method to use to access a file in your resources folder...</div>
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<tr id="i7" class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#getHexString-byte:A-">getHexString</a></span>(byte[]&nbsp;b)</code>
<div class="block">Utility method to convert a byte array in a string made up of hex (0,.. 9, a,..f)</div>
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<tr id="i8" class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#getHexString-byte:A-int-int-">getHexString</a></span>(byte[]&nbsp;b,
int&nbsp;offset,
int&nbsp;length)</code>
<div class="block">Utility method to convert a byte array in a string made up of hex (0,.. 9, a,..f)</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#getHexStringForDebug-byte:A-int-int-">getHexStringForDebug</a></span>(byte[]&nbsp;b,
int&nbsp;offset,
int&nbsp;length)</code>
<div class="block">Utility method to convert a byte array in a string made up of hex (0,.. 9, a,..f) and
format the string with `0xCC` where CC is the string in HEX</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#getStringRndVal-int-">getStringRndVal</a></span>(int&nbsp;factor)</code>
<div class="block">Retrieves a random value rounded to 2 decimal...</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#md5sum-java.lang.String-">md5sum</a></span>(java.lang.String&nbsp;msg)</code>
<div class="block">Returns the md5 of any input...</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#pDebug-java.lang.String-">pDebug</a></span>(java.lang.String&nbsp;msg)</code>&nbsp;</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>static byte[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#readBytes-java.io.InputStream-">readBytes</a></span>(java.io.InputStream&nbsp;in)</code>
<div class="block">Reads the incoming data from an input stream as long as there is
something to read and saved the data in an array of bytes.</div>
</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>static java.util.List&lt;java.lang.String&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#readLine-java.io.InputStream-">readLine</a></span>(java.io.InputStream&nbsp;in)</code>
<div class="block">Reads lines of text from the given input stream.</div>
</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code>static byte[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#readNBytes-java.io.InputStream-int-">readNBytes</a></span>(java.io.InputStream&nbsp;in,
int&nbsp;len)</code>
<div class="block">Reads from the given input stream an amount of bytes and retrieves these data as
an array of bytes.</div>
</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#threadWait-java.lang.Thread-long-">threadWait</a></span>(java.lang.Thread&nbsp;thread,
long&nbsp;millis)</code>
<div class="block">To be used to make a thread waiting for a certain amount of time</div>
</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#unsignedByteToSignedInt-byte-">unsignedByteToSignedInt</a></span>(byte&nbsp;from)</code>
<div class="block">Converts an unsigned byte to a signed integer.</div>
</td>
</tr>
<tr id="i18" class="altColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#waitSomeTime-int-">waitSomeTime</a></span>(int&nbsp;ms)</code>
<div class="block">To wait some times ...</div>
</td>
</tr>
<tr id="i19" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../ch/hevs/isi/utils/Utility.html#writeLine-java.io.OutputStream-byte:A-">writeLine</a></span>(java.io.OutputStream&nbsp;out,
byte[]&nbsp;toSend)</code>
<div class="block">Send the data contained in the given array of bytes through the output
stream.</div>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<pre>public static final&nbsp;int TCP_BUFFER_SIZE</pre>
<div class="block">Default size for the TCP input stream</div>
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<dd><a href="../../../../constant-values.html#ch.hevs.isi.utils.Utility.TCP_BUFFER_SIZE">Constant Field Values</a></dd>
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<pre>public static final&nbsp;boolean DEBUG_MODE</pre>
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<dd><a href="../../../../constant-values.html#ch.hevs.isi.utils.Utility.DEBUG_MODE">Constant Field Values</a></dd>
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<h4>rnd</h4>
<pre>public static&nbsp;java.util.Random rnd</pre>
<div class="block">Object to get some random values...</div>
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<h4>Utility</h4>
<pre>public&nbsp;Utility()</pre>
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<pre>public static&nbsp;byte[]&nbsp;calculateCRC(byte[]&nbsp;data,
int&nbsp;offset,
int&nbsp;len)</pre>
<div class="block">Calculates and returns the CRC using the data passed in parameters.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>data</code> - a byte array containing the data to send</dd>
<dd><code>offset</code> - the offset</dd>
<dd><code>len</code> - the data length</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>byte[] the CRC</dd>
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<pre>public static&nbsp;boolean&nbsp;checkCRC(byte[]&nbsp;data,
int&nbsp;offset,
int&nbsp;len,
byte[]&nbsp;crc)</pre>
<div class="block">Checks the CRC and returns true if it is correct, otherwise false.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>data</code> - a byte array containing the data to send</dd>
<dd><code>offset</code> - the offset</dd>
<dd><code>len</code> - the data length</dd>
<dd><code>crc</code> - a byte array containing the CRC to check</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>boolean true if the CRC is correct, otherwise false</dd>
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<pre>public static&nbsp;java.lang.Float&nbsp;bytesToFloat(byte[]&nbsp;bytes,
int&nbsp;offset,
int&nbsp;size)</pre>
<div class="block">Returns a <code>float</code> value from array of bytes. This byte's array can only be 2 or 4 bytes long.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>bytes</code> - The array of bytes to convert.</dd>
<dd><code>offset</code> - The position where the method has to start to get the bytes from.</dd>
<dd><code>size</code> - The amount of bytes to convert.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A <code>Float</code> value or <code>null</code> if the process failed.</dd>
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<pre>public static&nbsp;int&nbsp;unsignedByteToSignedInt(byte&nbsp;from)</pre>
<div class="block">Converts an unsigned byte to a signed integer.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>from</code> - an unsigned byte to convert to a signed integer</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>int a signed integer</dd>
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<h4>getHexString</h4>
<pre>public static&nbsp;java.lang.String&nbsp;getHexString(byte[]&nbsp;b)</pre>
<div class="block">Utility method to convert a byte array in a string made up of hex (0,.. 9, a,..f)</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>b</code> - The array of bytes to be convert in HEX characters.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A string representing the given array of byte in HEX values.</dd>
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<pre>public static&nbsp;java.lang.String&nbsp;getHexString(byte[]&nbsp;b,
int&nbsp;offset,
int&nbsp;length)</pre>
<div class="block">Utility method to convert a byte array in a string made up of hex (0,.. 9, a,..f)</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>b</code> - The byte array to convert in HEX string</dd>
<dd><code>offset</code> - The index where we start to convert from.</dd>
<dd><code>length</code> - The amount of bytes to convert in HEX string</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A String representing the HEX values of the selected bytes of the array.</dd>
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<pre>public static&nbsp;java.lang.String&nbsp;getHexStringForDebug(byte[]&nbsp;b,
int&nbsp;offset,
int&nbsp;length)</pre>
<div class="block">Utility method to convert a byte array in a string made up of hex (0,.. 9, a,..f) and
format the string with `0xCC` where CC is the string in HEX</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>b</code> - The byte array to convert in HEX string</dd>
<dd><code>offset</code> - The index where we start to convert from.</dd>
<dd><code>length</code> - The amount of bytes to convert in HEX string</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A String representing the HEX values of the selected bytes of the array.</dd>
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<h4>threadWait</h4>
<pre>public static&nbsp;void&nbsp;threadWait(java.lang.Thread&nbsp;thread,
long&nbsp;millis)</pre>
<div class="block">To be used to make a thread waiting for a certain amount of time</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>thread</code> - The thread to be stopped</dd>
<dd><code>millis</code> - The amount of time in [ms] to stop the thread.</dd>
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<pre>public static&nbsp;void&nbsp;waitSomeTime(int&nbsp;ms)</pre>
<div class="block">To wait some times ...</div>
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<pre>public static&nbsp;java.lang.String&nbsp;md5sum(java.lang.String&nbsp;msg)</pre>
<div class="block">Returns the md5 of any input...</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>msg</code> - The input string to process</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The md5 of the input string.</dd>
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<pre>public static&nbsp;java.lang.String&nbsp;getStringRndVal(int&nbsp;factor)</pre>
<div class="block">Retrieves a random value rounded to 2 decimal...</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>factor</code> - A coefficient which the random value is multiplied with.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A random value rounded to 2 decimal converted to a String.</dd>
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<pre>public static&nbsp;byte[]&nbsp;readBytes(java.io.InputStream&nbsp;in)
throws java.io.IOException</pre>
<div class="block">Reads the incoming data from an input stream as long as there is
something to read and saved the data in an array of bytes.
The method is blocking !
This method blocks until input data is available, end of file is detected,
or an exception is thrown.
If the length of of read data is zero, then no bytes are read and an empty
array of bytes is returned; otherwise, there is an attempt to read at least
one byte. If no byte is available because the stream is at the end of the
file, the value -1 is returned; otherwise, at least one byte is read and
returned as an array of bytes.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>in</code> - The input Stream where to read the data coming from.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The read data as an <code>array of bytes</code>. Or null if the
has been closed by the peer while waiting for incoming data.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If the first byte cannot be read for any reason other
than the end of the file, if the input stream has been
closed, or if some other I/O error occurs.</dd>
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<pre>public static&nbsp;byte[]&nbsp;readNBytes(java.io.InputStream&nbsp;in,
int&nbsp;len)
throws java.io.IOException</pre>
<div class="block">Reads from the given input stream an amount of bytes and retrieves these data as
an array of bytes. This method is
The method is blocking !</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>in</code> - The input Stream where to read the data coming from.</dd>
<dd><code>len</code> - The number of bytes to be read from the input stream.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The read data as an <code>array of bytes</code>.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If the first byte cannot be read for any reason other
than the end of the file, if the input stream has been
closed, or if some other I/O error occurs.</dd>
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<pre>public static&nbsp;java.util.List&lt;java.lang.String&gt;&nbsp;readLine(java.io.InputStream&nbsp;in)
throws java.io.IOException</pre>
<div class="block">Reads lines of text from the given input stream. A line is considered to be terminated by any one of a
line feed ('\n'), a carriage return ('\r'), or a carriage return followed immediately by a line feed.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>in</code> - The Input Stream to read from.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A list of String, without any line-termination characters, corresponding to each line read from the
input stream, or an empty list if the end of the stream has been reached.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an I/O error occurs</dd>
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<h4>writeLine</h4>
<pre>public static&nbsp;void&nbsp;writeLine(java.io.OutputStream&nbsp;out,
byte[]&nbsp;toSend)
throws java.io.IOException</pre>
<div class="block">Send the data contained in the given array of bytes through the output
stream. It raises an IOException if something goes wrong.
The method returns the amount of bytes sent.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>out</code> - The Output Stream to send the data to.</dd>
<dd><code>toSend</code> - The data to send</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.io.IOException</code> - If an I/O error occurs</dd>
</dl>
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<pre>public static&nbsp;java.io.BufferedReader&nbsp;fileParser(java.lang.String&nbsp;pathName,
java.lang.String&nbsp;fileName)</pre>
<div class="block">Method to use to access a file in your resources folder...</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>pathName</code> - folder's name (if exists) from `resources`</dd>
<dd><code>fileName</code> - Name of the file to access</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A BufferedReader related to the file you want to work with, or null if the file could not be reached.</dd>
</dl>
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<h4>DEBUG</h4>
<pre>public static&nbsp;void&nbsp;DEBUG(java.lang.String&nbsp;className,
java.lang.String&nbsp;method,
java.lang.String&nbsp;msg)</pre>
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<h4>DEBUG</h4>
<pre>public static&nbsp;void&nbsp;DEBUG(java.lang.Object&nbsp;object,
java.lang.String&nbsp;method,
java.lang.String&nbsp;msg)</pre>
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<h4>DEBUG</h4>
<pre>public static&nbsp;void&nbsp;DEBUG(java.lang.String&nbsp;packageName,
java.lang.String&nbsp;className,
java.lang.String&nbsp;method,
java.lang.String&nbsp;msg)</pre>
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<pre>public static&nbsp;void&nbsp;pDebug(java.lang.String&nbsp;msg)</pre>
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