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JAVA given a decimal number convert and return as hex value

/**
 * given a decimal number convert and return as hex value
 */
public String convertNum(String rawIn)
{
    try
    {
	if(rawIn.matches("^[>&\\^<!][0-9]+$"))
	{
	  rawIn = rawIn.substring(1);		
	}
	if(rawIn.length()>11 && rawIn.startsWith("0"))
	{
	  rawIn = rawIn.substring(0,rawIn.length()-1);		
	}
	return Integer.toHexString( Integer.parseInt( rawIn, 10 ) );
    }
    catch(NumberFormatException e)
    {
	System.out.println("Num:Format Not suitable "+e);
	return rawIn;
    }
}
https://snipt.net/embed/527027f5fe656907b19c4d9f59d38ac5/
/raw/527027f5fe656907b19c4d9f59d38ac5/
527027f5fe656907b19c4d9f59d38ac5
java
Java
23
2019-08-20T23:36:49
True
False
False
/api/public/snipt/8715/
java-given-a-decimal-number-convert-and-return-as-hex-value
<table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><a href="#L-1"> 1</a> <a href="#L-2"> 2</a> <a href="#L-3"> 3</a> <a href="#L-4"> 4</a> <a href="#L-5"> 5</a> <a href="#L-6"> 6</a> <a href="#L-7"> 7</a> <a href="#L-8"> 8</a> <a href="#L-9"> 9</a> <a href="#L-10">10</a> <a href="#L-11">11</a> <a href="#L-12">12</a> <a href="#L-13">13</a> <a href="#L-14">14</a> <a href="#L-15">15</a> <a href="#L-16">16</a> <a href="#L-17">17</a> <a href="#L-18">18</a> <a href="#L-19">19</a> <a href="#L-20">20</a> <a href="#L-21">21</a> <a href="#L-22">22</a> <a href="#L-23">23</a></pre></div></td><td class="code"><div class="highlight"><pre><span></span><span id="L-1"><a name="L-1"></a><span class="cm">/**</span> </span><span id="L-2"><a name="L-2"></a><span class="cm"> * given a decimal number convert and return as hex value</span> </span><span id="L-3"><a name="L-3"></a><span class="cm"> */</span> </span><span id="L-4"><a name="L-4"></a><span class="kd">public</span> <span class="n">String</span> <span class="nf">convertNum</span><span class="o">(</span><span class="n">String</span> <span class="n">rawIn</span><span class="o">)</span> </span><span id="L-5"><a name="L-5"></a><span class="o">{</span> </span><span id="L-6"><a name="L-6"></a> <span class="k">try</span> </span><span id="L-7"><a name="L-7"></a> <span class="o">{</span> </span><span id="L-8"><a name="L-8"></a> <span class="k">if</span><span class="o">(</span><span class="n">rawIn</span><span class="o">.</span><span class="na">matches</span><span class="o">(</span><span class="s">&quot;^[&gt;&amp;\\^&lt;!][0-9]+$&quot;</span><span class="o">))</span> </span><span id="L-9"><a name="L-9"></a> <span class="o">{</span> </span><span id="L-10"><a name="L-10"></a> <span class="n">rawIn</span> <span class="o">=</span> <span class="n">rawIn</span><span class="o">.</span><span class="na">substring</span><span class="o">(</span><span class="mi">1</span><span class="o">);</span> </span><span id="L-11"><a name="L-11"></a> <span class="o">}</span> </span><span id="L-12"><a name="L-12"></a> <span class="k">if</span><span class="o">(</span><span class="n">rawIn</span><span class="o">.</span><span class="na">length</span><span class="o">()&gt;</span><span class="mi">11</span> <span class="o">&amp;&amp;</span> <span class="n">rawIn</span><span class="o">.</span><span class="na">startsWith</span><span class="o">(</span><span class="s">&quot;0&quot;</span><span class="o">))</span> </span><span id="L-13"><a name="L-13"></a> <span class="o">{</span> </span><span id="L-14"><a name="L-14"></a> <span class="n">rawIn</span> <span class="o">=</span> <span class="n">rawIn</span><span class="o">.</span><span class="na">substring</span><span class="o">(</span><span class="mi">0</span><span class="o">,</span><span class="n">rawIn</span><span class="o">.</span><span class="na">length</span><span class="o">()-</span><span class="mi">1</span><span class="o">);</span> </span><span id="L-15"><a name="L-15"></a> <span class="o">}</span> </span><span id="L-16"><a name="L-16"></a> <span class="k">return</span> <span class="n">Integer</span><span class="o">.</span><span class="na">toHexString</span><span class="o">(</span> <span class="n">Integer</span><span class="o">.</span><span class="na">parseInt</span><span class="o">(</span> <span class="n">rawIn</span><span class="o">,</span> <span class="mi">10</span> <span class="o">)</span> <span class="o">);</span> </span><span id="L-17"><a name="L-17"></a> <span class="o">}</span> </span><span id="L-18"><a name="L-18"></a> <span class="k">catch</span><span class="o">(</span><span class="n">NumberFormatException</span> <span class="n">e</span><span class="o">)</span> </span><span id="L-19"><a name="L-19"></a> <span class="o">{</span> </span><span id="L-20"><a name="L-20"></a> <span class="n">System</span><span class="o">.</span><span class="na">out</span><span class="o">.</span><span class="na">println</span><span class="o">(</span><span class="s">&quot;Num:Format Not suitable &quot;</span><span class="o">+</span><span class="n">e</span><span class="o">);</span> </span><span id="L-21"><a name="L-21"></a> <span class="k">return</span> <span class="n">rawIn</span><span class="o">;</span> </span><span id="L-22"><a name="L-22"></a> <span class="o">}</span> </span><span id="L-23"><a name="L-23"></a><span class="o">}</span> </span></pre></div> </td></tr></table>
decimal, hex, java