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Problem with my first EJB application
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created by <a href="https://community.jboss.org/people/rino.covelli">Liberino Covelli</a> in <i>Beginner's Corner</i> - <a href="https://community.jboss.org/message/752694#752694">View the full discussion</a>
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<div class="jive-rendered-content"><p>Dear friends , i have a problem with my first EJB application.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I hava create this bussiness interface </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code jive-java"><font color="navy"><b>package</b></font> ejb;
 
<font color="navy"><b>import</b></font> javax.ejb.Local;
<font color="navy"><b>import</b></font> javax.ejb.Remote;
 
@Local
<font color="navy"><b>public</b></font> <font color="navy"><b>interface</b></font> CountryCapital <font color="navy">{</font>
    <font color="navy"><b>public</b></font> String capitalName(String countryName);
<font color="navy">}</font>
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I have create a SessionBean </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code jive-java"><font color="navy"><b>package</b></font> ejb;
 
<font color="navy"><b>import</b></font> javax.ejb.EJB;
<font color="navy"><b>import</b></font> javax.ejb.Stateless;
 
@Stateless
<font color="navy"><b>public</b></font> <font color="navy"><b>class</b></font> CountryCapitalBean <font color="navy"><b>implements</b></font> CountryCapital,CountryCapitalLocal<font color="navy">{</font>
   
   
    <font color="navy"><b>public</b></font> String capitalName(String countryName)
    <font color="navy">{</font>
        String capital=<font color="navy"><b>new</b></font> String(<font color="red">"No such country"</font>);
        <font color="navy"><b>if</b></font> (countryName.equalsIgnoreCase(<font color="red">"India"</font>))
        <font color="navy">{</font>
            capital=<font color="red">"New Delhi"</font>;
        <font color="navy">}</font>
        <font color="navy"><b>if</b></font> (countryName.equalsIgnoreCase(<font color="red">"United States Of America"</font>))
        <font color="navy">{</font>
            capital=<font color="red">"Washington DC"</font>;
        <font color="navy">}</font>
        <font color="navy"><b>if</b></font> (countryName.equalsIgnoreCase(<font color="red">"China"</font>))
        <font color="navy">{</font>
            capital=<font color="red">"Beijing"</font>;
        <font color="navy">}</font>
 
   
        <font color="navy"><b>return</b></font> capital;
 
    <font color="navy">}</font>
<font color="navy">}</font>
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span id="result_box" lang="en"><span class="hps">Finally</span><span>,</span> <span class="hps">I implemented</span> <span class="hps">a client</span> <span class="hps">and wanted to</span> <span class="hps">inject the</span> <span class="hps">bean</span> <span class="hps">but it</span> <span class="hps">does not work</span></span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span lang="en"><span class="hps"><br/></span><pre class="jive-pre"><code class="jive-code jive-java"><font color="navy"><b>package</b></font> appclient;
 
 
<font color="navy"><b>import</b></font> javax.ejb.EJB;
 
 
<font color="navy"><b>public</b></font> <font color="navy"><b>class</b></font> ApplicationClient <font color="navy">{</font>
   
    @EJB
    <font color="navy"><b>private</b></font> <font color="navy"><b>static</b></font> CountryCapital countryCapital;
   
    <font color="navy"><b>public</b></font> <font color="navy"><b>static</b></font> <font color="navy"><b>void</b></font> main(String [] args)<font color="navy">{</font>
        
        countryCapital.capitalName(<font color="red">"India"</font>);
         <font color="navy">}</font> 
<font color="navy">}</font> 
</code></pre></span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>This is the error , the injection does not work</p><pre class="jive-pre"><code class="jive-code jive-java">Exception in thread <font color="red">"main"</font> java.lang.NullPointerException
    at appclient.ApplicationClient.main(ApplicationClient.java:25)
</code></pre></div>
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