src/java.base/share/classes/java/lang/ClassLoader.java

*** 43,57 ****
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.Set;
  import java.util.Stack;
  import java.util.Map;
  import java.util.Vector;
  import java.util.Hashtable;
  import java.util.WeakHashMap;
  import java.util.concurrent.ConcurrentHashMap;
- import sun.misc.CompoundEnumeration;
  import sun.misc.Resource;
  import sun.misc.URLClassPath;
  import sun.reflect.CallerSensitive;
  import sun.reflect.Reflection;
  import sun.reflect.misc.ReflectUtil;
--- 43,57 ----
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.Set;
  import java.util.Stack;
  import java.util.Map;
+ import java.util.NoSuchElementException;
  import java.util.Vector;
  import java.util.Hashtable;
  import java.util.WeakHashMap;
  import java.util.concurrent.ConcurrentHashMap;
  import sun.misc.Resource;
  import sun.misc.URLClassPath;
  import sun.reflect.CallerSensitive;
  import sun.reflect.Reflection;
  import sun.reflect.misc.ReflectUtil;
*** 2204,2208 ****
--- 2204,2241 ----
              new Object[] { parent });
          Thread.currentThread().setContextClassLoader(sys);
          return sys;
      }
  }
+ 
+ /*
+  * A utility class that will enumerate over an array of enumerations.
+  */
+ final class CompoundEnumeration<E> implements Enumeration<E> {
+     private final Enumeration<E>[] enums;
+     private int index;
+ 
+     public CompoundEnumeration(Enumeration<E>[] enums) {
+         this.enums = enums;
+     }
+ 
+     private boolean next() {
+         while (index < enums.length) {
+             if (enums[index] != null && enums[index].hasMoreElements()) {
+                 return true;
+             }
+             index++;
+         }
+         return false;
+     }
+ 
+     public boolean hasMoreElements() {
+         return next();
+     }
+ 
+     public E nextElement() {
+         if (!next()) {
+             throw new NoSuchElementException();
+         }
+         return enums[index].nextElement();
+     }
+ }