src/java.compiler/share/classes/javax/tools/DiagnosticCollector.java

*** 1,7 ****
  /*
!  * Copyright (c) 2006, 2014, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
--- 1,7 ----
  /*
!  * Copyright (c) 2006, 2019, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
*** 41,50 ****
--- 41,55 ----
   */
  public final class DiagnosticCollector<S> implements DiagnosticListener<S> {
      private List<Diagnostic<? extends S>> diagnostics =
              Collections.synchronizedList(new ArrayList<Diagnostic<? extends S>>());
  
+     /**
+      * Creates a new instance of DiagnosticCollector.
+      */
+     public DiagnosticCollector() {}
+ 
      public void report(Diagnostic<? extends S> diagnostic) {
          Objects.requireNonNull(diagnostic);
          diagnostics.add(diagnostic);
      }