diff --git a/app/src/processing/app/contrib/ContribProgressBar.java b/app/src/processing/app/contrib/ContribProgressBar.java
new file mode 100644
index 000000000..47371c84b
--- /dev/null
+++ b/app/src/processing/app/contrib/ContribProgressBar.java
@@ -0,0 +1,57 @@
+/* -*- mode: java; c-basic-offset: 2; indent-tabs-mode: nil -*- */
+
+/*
+  Part of the Processing project - http://processing.org
+
+  Copyright (c) 2013-15 The Processing Foundation
+  Copyright (c) 2011-12 Ben Fry and Casey Reas
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License version 2
+  as published by the Free Software Foundation.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License along
+  with this program; if not, write to the Free Software Foundation, Inc.
+  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+package processing.app.contrib;
+
+import javax.swing.JProgressBar;
+
+
+// I suspect this code can mostly be replaced with built-in Swing functions.
+// This code seems like it's adapted from old example code found on the web.
+// https://github.com/processing/processing/issues/3176
+
+abstract class ContribProgressBar extends ContribProgressMonitor {
+  JProgressBar progressBar;
+
+  public ContribProgressBar(JProgressBar progressBar) {
+    this.progressBar = progressBar;
+  }
+
+  public void startTask(String name, int maxValue) {
+    finished = false;
+    progressBar.setString(name);
+    progressBar.setIndeterminate(maxValue == UNKNOWN);
+    progressBar.setMaximum(maxValue);
+  }
+
+  public void setProgress(int value) {
+    super.setProgress(value);
+    progressBar.setValue(value);
+  }
+
+  @Override
+  public void finished() {
+    super.finished();
+    finishedAction();
+  }
+
+  public abstract void finishedAction();
+}
diff --git a/app/src/processing/app/contrib/ContribProgressMonitor.java b/app/src/processing/app/contrib/ContribProgressMonitor.java
index 06d3d0b10..8e627d957 100644
--- a/app/src/processing/app/contrib/ContribProgressMonitor.java
+++ b/app/src/processing/app/contrib/ContribProgressMonitor.java
@@ -3,7 +3,7 @@
 /*
   Part of the Processing project - http://processing.org
 
-  Copyright (c) 2013 The Processing Foundation
+  Copyright (c) 2013-15 The Processing Foundation
   Copyright (c) 2011-12 Ben Fry and Casey Reas
 
   This program is free software; you can redistribute it and/or modify
@@ -21,11 +21,10 @@
 */
 package processing.app.contrib;
 
-import javax.swing.JProgressBar;
-
 
 // I suspect this code can mostly be replaced with built-in Swing functions.
 // This code seems like it's adapted from old example code found on the web.
+// https://github.com/processing/processing/issues/3176
 
 abstract class ContribProgressMonitor {
   static final int UNKNOWN = -1;
@@ -77,31 +76,3 @@ abstract class ContribProgressMonitor {
   }
 }
 
-
-abstract class ContribProgressBar extends ContribProgressMonitor {
-  JProgressBar progressBar;
-
-  public ContribProgressBar(JProgressBar progressBar) {
-    this.progressBar = progressBar;
-  }
-
-  public void startTask(String name, int maxValue) {
-    finished = false;
-    progressBar.setString(name);
-    progressBar.setIndeterminate(maxValue == UNKNOWN);
-    progressBar.setMaximum(maxValue);
-  }
-
-  public void setProgress(int value) {
-    super.setProgress(value);
-    progressBar.setValue(value);
-  }
-
-  @Override
-  public void finished() {
-    super.finished();
-    finishedAction();
-  }
-
-  public abstract void finishedAction();
-}