The latest articles on DEV Community by karim (@karimmesghouni). https://dev.to/karimmesghouni https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F672192%2F8edbec35-c6c9-4264-8d50-07c15ea4b086.png https://dev.to/karimmesghouni en karim Wed, 27 Apr 2022 17:54:04 +0000 https://dev.to/karimmesghouni/java-2k5l https://dev.to/karimmesghouni/java-2k5l <div class="highlight js-code-highlight"> <pre class="highlight kotlin"><code> <span class="k">public</span> <span class="n">void</span> <span class="nf">deleteStudent</span><span class="p">(</span><span class="nc">Long</span> <span class="n">studentId</span><span class="p">)</span> <span class="p">{</span> <span class="k">if</span><span class="p">(!</span><span class="n">studentRepository</span><span class="p">.</span><span class="nf">existsById</span><span class="p">(</span><span class="n">studentId</span><span class="p">))</span> <span class="p">{</span> <span class="k">throw</span> <span class="n">new</span> <span class="nc">StudentNotFoundException</span><span class="p">(</span> <span class="s">"Student with id "</span> <span class="p">+</span> <span class="n">studentId</span> <span class="p">+</span> <span class="s">" does not exists"</span><span class="p">);</span> <span class="p">}</span> <span class="n">studentRepository</span><span class="p">.</span><span class="nf">deleteById</span><span class="p">(</span><span class="n">studentId</span><span class="p">);</span> <span class="p">}</span> </code></pre> </div>