title: Java method appends method
body: <p>I have seen in some codes OOP construction like that:</p>
  
  <pre><code>Obj o=new Obj();
  o.setVisibility(true).setHeight(100).setWidth(100).color(Color.Black);
  </code></pre>
  
  <p>I want to make similar object, i.e I want to call some method after another, if you now what I mean. 
  I have tried to find this on internet and OOP books, but I didn't know exactly what to search.</p>
  
  <p>Thanks.</p>