title: An interface with different method parameters
body: <p>I want to declare an interface be use with several classes<br/>
  this classes have method with different parameters<br/></p>
  
  <p>interface:<br/></p>
  
  <pre><code>public interface Operation {
  
  public int Add();
  
  }
  </code></pre>
  
  <p>class A:<br/></p>
  
  <pre><code>public class CLASSA implement Operation{
  
       public int Add(int id,String name);
  
  }
  </code></pre>
  
  <p>class B:<br/></p>
  
  <pre><code>public class CLASSB implement Operation{
  
       public int Add(String name);
  
  }
  </code></pre>
  
  <p>how to impelement of this interface?</p>