<p>Null check should not be used with the instance of since it is redundant, there is no need to check the null with an instance of since null is not an instance of anything,</p>
<p>I think this makes sense</p>
<h2 id="non-compliant-code">Non-Compliant Code</h2>
<pre><code class="lang-java"><span class="hljs-keyword">if</span>((customFieldType!=<span class="hljs-keyword">null</span>) &amp;&amp; (customFieldType <span class="hljs-keyword">instanceof</span> AttachmentCFType)){
                String mode = <span class="hljs-keyword">this</span>.getMode();
            }
</code></pre>
<h2 id="compliant-solution">Compliant Solution</h2>
<ul>
<li>Removed the null check from the if block</li>
</ul>
<pre><code class="lang-Java"><span class="hljs-keyword">if</span>(customFieldType <span class="hljs-keyword">instanceof</span> AttachmentCFType){
                String mode = <span class="hljs-keyword">this</span>.getMode();
            }
</code></pre>


Null check should not be used with the instance of since it is redundant, there is no need to check the null with an instance of since null is not an instance of anything,

I think this makes sense

## Non-Compliant Code 

```java
if((customFieldType!=null) && (customFieldType instanceof AttachmentCFType)){
        		String mode = this.getMode();
        	}
```

## Compliant Solution
- Removed the null check from the if block

``` Java
if(customFieldType instanceof AttachmentCFType){
        		String mode = this.getMode();
        	}
```

SonarLint: Java - Null checks should not be used with "instanceof" (squid:S4201)

Non-Compliant Code

Compliant Solution