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<h2 title="Class ConcurrentAccessException" class="title">Class ConcurrentAccessException</h2>
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<pre>public class <a href="../../../../src-html/org/apache/shiro/authc/ConcurrentAccessException.html#line.38">ConcurrentAccessException</a>
extends <a href="../../../../org/apache/shiro/authc/AccountException.html" title="class in org.apache.shiro.authc">AccountException</a></pre>
<div class="block">Thrown when an authentication attempt has been received for an account that has already been
authenticated (i.e. logged-in), and the system is configured to prevent such concurrent access.
<p>This is useful when an application must ensure that only one person is logged-in to a single
account at any given time.
<p>Sometimes account names and passwords are lazily given away
to many people for easy access to a system. Such behavior is undesirable in systems where
users are accountable for their actions, such as in government applications, or when licensing
agreements must be maintained, such as those which only allow 1 user per paid license.
<p>By disallowing concurrent access, such systems can ensure that each authenticated session
corresponds to one and only one user at any given time.</div>
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<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>0.1</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../serialized-form.html#org.apache.shiro.authc.ConcurrentAccessException">Serialized Form</a></dd>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/shiro/authc/ConcurrentAccessException.html#ConcurrentAccessException--">ConcurrentAccessException</a></span>()</code>
<div class="block">Creates a new ConcurrentAccessException.</div>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/shiro/authc/ConcurrentAccessException.html#ConcurrentAccessException-java.lang.String-">ConcurrentAccessException</a></span>(<a href="https://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;message)</code>
<div class="block">Constructs a new ConcurrentAccessException.</div>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/shiro/authc/ConcurrentAccessException.html#ConcurrentAccessException-java.lang.String-java.lang.Throwable-">ConcurrentAccessException</a></span>(<a href="https://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;message,
<a href="https://docs.oracle.com/javase/6/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a>&nbsp;cause)</code>
<div class="block">Constructs a new ConcurrentAccessException.</div>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/shiro/authc/ConcurrentAccessException.html#ConcurrentAccessException-java.lang.Throwable-">ConcurrentAccessException</a></span>(<a href="https://docs.oracle.com/javase/6/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a>&nbsp;cause)</code>
<div class="block">Constructs a new ConcurrentAccessException.</div>
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<h4>ConcurrentAccessException</h4>
<pre>public&nbsp;<a href="../../../../src-html/org/apache/shiro/authc/ConcurrentAccessException.html#line.43">ConcurrentAccessException</a>()</pre>
<div class="block">Creates a new ConcurrentAccessException.</div>
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<pre>public&nbsp;<a href="../../../../src-html/org/apache/shiro/authc/ConcurrentAccessException.html#line.52">ConcurrentAccessException</a>(<a href="https://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;message)</pre>
<div class="block">Constructs a new ConcurrentAccessException.</div>
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<dd><code>message</code> - the reason for the exception</dd>
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<pre>public&nbsp;<a href="../../../../src-html/org/apache/shiro/authc/ConcurrentAccessException.html#line.61">ConcurrentAccessException</a>(<a href="https://docs.oracle.com/javase/6/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a>&nbsp;cause)</pre>
<div class="block">Constructs a new ConcurrentAccessException.</div>
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<pre>public&nbsp;<a href="../../../../src-html/org/apache/shiro/authc/ConcurrentAccessException.html#line.71">ConcurrentAccessException</a>(<a href="https://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;message,
<a href="https://docs.oracle.com/javase/6/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a>&nbsp;cause)</pre>
<div class="block">Constructs a new ConcurrentAccessException.</div>
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<dd><code>cause</code> - the underlying Throwable that caused this exception to be thrown.</dd>
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