title: How to import library in Java
body: <p>I just found <a href="https://github.com/sarxos/webcam-capture/tree/master/webcam-capture-examples/webcam-capture-qrcode" rel="nofollow noreferrer">project in the Internet</a> which I need to compile and understand how I can use those libraries;
  But I just don't know how to compile it, because I don't understand how to include required libs.</p>
  
  <p>I'm coding on Java just for three days, and I don't even understand how to include my own .java files to work together. (I was invoking bar() method from another Foo.java file like Foo.bar()).</p>
  
  <p>I need somebody to tell me, or just give me a link to any quick guide how to do this without any additional soft (e.g. IDE). Just javac and java commands.</p>