--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/main/gov/nasa/jpf/JPFClassLoader.java	Fri Jan 23 10:14:01 2015 -0800
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2014, United States Government, as represented by the
+ * Administrator of the National Aeronautics and Space Administration.
+ * All rights reserved.
+ *
+ * The Java Pathfinder core (jpf-core) platform is licensed under the
+ * Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ * 
+ *        http://www.apache.org/licenses/LICENSE-2.0. 
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and 
+ * limitations under the License.
+ */
+
+package gov.nasa.jpf;
+
+import java.io.File;
+import java.net.URL;
+import java.net.URLClassLoader;
+
+/**
+ * classloader that is used by Config to instantiate from JPF configured
+ * paths. This is a standard parent-first loader to avoid multiple class
+ * instances when using our Run*.jar tools
+ *
+ * The main reason for having our own classloader is dynamically configured resource
+ * and library lookup
+ */
+public class JPFClassLoader extends URLClassLoader {
+
+  String[] nativeLibs;
+
+
+  static {
+    //ClassLoader.registerAsParallelCapable(); // for jdk7
+  }
+  
+  public JPFClassLoader (URL[] urls){
+    super(urls);
+  }
+
+  public JPFClassLoader (URL[] urls, String[] libs, ClassLoader parent){
+    super(urls, parent);
+
+    nativeLibs = libs;
+  }
+
+  @Override
+  protected String findLibrary (String libBaseName){
+
+    if (nativeLibs != null){
+      String libName = File.separator + System.mapLibraryName(libBaseName);
+
+      for (String libPath : nativeLibs) {
+        if (libPath.endsWith(libName)) {
+          return libPath;
+        }
+      }
+    }
+
+    return null; // means VM uses java.library.path to look it up
+  }
+
+  /**
+   * we make it public since we add paths dynamically during JPF init
+   * 
+   * Note this is ignored according to the javadocs if the provided url is already in the classpath.
+   * We do rely on this feature since me might add jpf.jar several times during bootstrap
+   */
+  @Override
+  public void addURL (URL url){
+    if (url != null){
+      super.addURL(url);
+    }
+  }
+  
+  public void setNativeLibs (String[] libs){
+    nativeLibs = libs;
+  }
+}