title: Java Batch Compiler - ignore all warnings through command line option
body: <p>I see these runtime programming options:
  <a href="https://help.eclipse.org/2018-12/index.jsp?topic=%2Forg.eclipse.jdt.doc.user%2Ftasks%2Ftask-using_batch_compiler.htm" rel="nofollow noreferrer">https://help.eclipse.org/2018-12/index.jsp?topic=%2Forg.eclipse.jdt.doc.user%2Ftasks%2Ftask-using_batch_compiler.htm</a></p>
  
  <p>but I am wondering if there is a command line flag I can use to ignore warnings outputted by the compiler  (I just want to see errors).</p>
  
  <p>For example I see:</p>
  
  <pre><code>----------
  59. WARNING in /home/oleg/codes/oresoftware/vertx.api/src/main/java/huru/middleware/ErrorHandler.java (at line 16)
          HttpServerRequest request = ctx.request();
                            ^^^^^^^
  The value of the local variable request is not used
  ----------
  60. WARNING in /home/oleg/codes/oresoftware/vertx.api/src/main/java/huru/util/Asyncc.java (at line 121)
          public static AsyncTask zoom() {
                        ^^^^^^^^^
  Asyncc.AsyncTask is a raw type. References to generic type Asyncc.AsyncTask&lt;T,E&gt; should be parameterized
  ----------
  61. WARNING in /home/oleg/codes/oresoftware/vertx.api/src/main/java/huru/util/Asyncc.java (at line 124)
          v.done(null, null);
          ^^^^^^^^^^^^^^^^^^
  Type safety: The method done(Object, Object) belongs to the raw type Asyncc.IAsyncCallback. References to generic type Asyncc.IAsyncCallback&lt;T,E&gt; should be parameterized
  ----------
  62. ERROR in /home/oleg/codes/oresoftware/vertx.api/src/main/java/huru/util/Asyncc.java (at line 131)
          Asyncc.Parallel(asList(
                 ^^^^^^^^
  </code></pre>
  
  <p>Only looking to see ERRORs, not WARNINGs.</p>