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copied!<p>How are you writing up the code. I will suggest to use eclipse IDE, it will make your tasks simple</p> <p>If you are using eclipse. You need to do import the jar Filters.jar to your build path</p> <blockquote> <p>which as you mentioned you downloaded from <a href="http://jhlabs.com/ip/filters/download.html" rel="nofollow">JHLabs Download page</a> </p> <p>I found Filters.jar inside dist directory.</p> </blockquote> <p>Then you will be able to import the class or package</p> <pre><code>import com.jhlabs.image.*; </code></pre> <p>OR</p> <pre><code>import com.jhlabs.image.CheckFilter; </code></pre> <p>After importing the class or package you will be able to create object to it by</p> <pre><code>CheckFilter checkFilter = new CheckFilter(); </code></pre> <p>In case you are totally new you can take help from people over IRC or chat and get going.</p> <p>Someone would be able to quickly help you out</p> <p>----==----==----==----==----==----==----==----==---- Read your comments and Question again.</p> <p>You are totally missing the point. If you call to <strong><em>CheckFilter()</em></strong> directly without invoking new keyword, compiler will consider you are trying to access a method which is inside the class you are writing up. and give you error.</p> <p>As I mentioned above. Your are trying to accessing Instance variable for the class without declaring it. Either do CheckFilter checkFilter;</p> <p>before you access checkFilter variable or directly instantiate the class the way I mentioned.</p> <p>Seems to me you are missing a log of points :D</p>

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