<?xml version="1.0" encoding="UTF-8"?>
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<refentry xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svg="http://www.w3.org/2000/svg" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:db="http://docbook.org/ns/docbook" version="5.0-subset Scilab" xml:lang="en" xml:id="jexists">
    <refnamediv>
        <refname>jexists</refname>
        <refpurpose>Test if a Scilab Java Object is valid on the Java side</refpurpose>
    </refnamediv>
    <refsynopsisdiv>
        <title>Syntax</title>
        <synopsis>
            bool = jexists(obj)
        </synopsis>
    </refsynopsisdiv>
    <refsection>
        <title>Parameters</title>
        <variablelist>
            <varlistentry>
                <term>obj</term>
                <listitem>
                    <para>A mlist typed _JObj or _JClass</para>
                </listitem>
            </varlistentry>
            <varlistentry>
                <term>bool</term>
                <listitem>
                    <para>A boolean</para>
                </listitem>
            </varlistentry>
        </variablelist>
    </refsection>
    <refsection>
        <title>Description</title>
        <para>
            Returns true if the corresponding Java object is always valid. An object can be invalidated with jremove.
        </para>
    </refsection>
    <refsection>
        <title>Examples</title>
        <programlisting role="example"><![CDATA[
	       jimport java.lang.Double;
	       d = Double.new("1.23456");
	       jexists(d)
	       jremove d;
	       jexists(d) // Will fail
      ]]></programlisting>
    </refsection>
    <refsection role="see also">
        <title>See also</title>
        <simplelist type="inline">
            <member>
                <link linkend="jremove">jremove</link>
            </member>
        </simplelist>
    </refsection>
    <refsection>
        <title>History</title>
        <revhistory>
            <revision>
                <revnumber>5.5.0</revnumber>
                <revremark>
                    Function introduced. Based on the 'JIMS' module. The main difference in the behavior compared to the JIMS module is that <link linkend="jautoUnwrap">jautoUnwrap</link> is enabled by default.
                </revremark>
            </revision>
        </revhistory>
    </refsection>
</refentry>

