title: Compiling issue in NetBeans
body: <p>I have created a project in NetBeans by downloading some third party jars of Bouncy castle, which provides some java cryptography API's. I have also downloaded the souce code and put them under the src folder as per package name. However a few java files which I have in my project are showing in red with errors. here is one such as --</p>
  
  <pre><code>getparams() in org.bouncycastle.jce.provider.JCEECPrivateKey cannot implement 
                 getParams() in rg.bouncycastle.jce.interfaces.ECKey
  found : java.security.spec.ECParameterSpec
  required: rg.bouncycastle.jce.ECParameterSpec
  </code></pre>
  
  <p>But the strange part is that when I actually compile the code from NetBeans , compilation is successful and the final jar file got created. However, the compilation says the following :</p>
  
  <pre><code>Note: Some input files use or override a deprecated API.
  Note: Recompile with -Xlint:deprecation for details.
  Note: Some input files use unchecked or unsafe operations.
  Note: Recompile with -Xlint:unchecked for details.
  </code></pre>
  
  <p>My questions are : Why is the compilation going through even though some files seem to have errors? Can I ignore these as benign?</p>
  
  <p>How to compile with -Xlint in NetBeans because I am compiling by clicking in the project and Clean and Build option.</p>