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

*** 290,302 ****
      // created classes.
      private final ProtectionDomain defaultDomain =
          new ProtectionDomain(new CodeSource(null, (Certificate[]) null),
                               null, this, null);
  
-     // The initiating protection domains for all classes loaded by this loader
-     private final Set<ProtectionDomain> domains;
- 
      // Invoked by the VM to record every loaded class with this loader.
      void addClass(Class<?> c) {
          classes.addElement(c);
      }
  
--- 290,299 ----
*** 347,363 ****
              = SharedSecrets.getJavaLangReflectModuleAccess()
                             .defineUnnamedModule(this);
          if (ParallelLoaders.isRegistered(this.getClass())) {
              parallelLockMap = new ConcurrentHashMap<>();
              package2certs = new ConcurrentHashMap<>();
-             domains = Collections.synchronizedSet(new HashSet<>());
              assertionLock = new Object();
          } else {
              // no finer-grained lock; lock on the classloader instance
              parallelLockMap = null;
              package2certs = new Hashtable<>();
-             domains = new HashSet<>();
              assertionLock = this;
          }
      }
  
      /**
--- 344,358 ----
*** 638,648 ****
                          return null;
                      }
                  }, new AccessControlContext(new ProtectionDomain[] {pd}));
              }
          }
-         domains.add(pd);
      }
  
      /**
       * Finds the class with the specified <a href="#name">binary name</a>.
       * This method should be overridden by class loader implementations that
--- 633,642 ----