title: found raw type: JComboBox
body: <p>I have very simple source file GuiApp1.java which I am trying to compile with cmd javac.
  It gives me warning that : </p>
  
  <pre><code>C:\Users\Thakkar\Java&gt;javac GuiApp1.java
  Note: GuiApp1.java uses unchecked or unsafe operations.
  Note: Recompile with -Xlint:unchecked for details.
  </code></pre>
  
  <p>so I used cmd as javac -Xlint GuiApp1.java for compile the source file.</p>
  
  <p>it gave me 6 warnings
  e.g.</p>
  
  <pre><code>GuiApp1.java:48: warning: [rawtypes] found raw type: JComboBox
          JComboBox fruits = new JComboBox(fruitOptions);
          ^
    missing type arguments for generic class JComboBox&lt;E&gt;
    where E is a type-variable:
      E extends Object declared in class JComboBox
  </code></pre>
  
  <p>how can i solve this?</p>