on">NotStrictlyPositiveException</a></code> - if <code>shape &lt;= 0</code> or
 <code>scale &lt;= 0</code>.</dd><dt><span class="strong">Since:</span></dt>
  <dd>2.1</dd></dl>
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<h4>GammaDistribution</h4>
<pre>public&nbsp;GammaDistribution(<a href="../../../../../org/apache/commons/math3/random/RandomGenerator.html" title="interface in org.apac