src/java.base/share/classes/javax/security/auth/Subject.java

@@ -152,15 +152,15 @@
      * {@code AuthPermission("modifyPrivateCredentials")}.
      */
     public Subject() {
 
         this.principals = Collections.synchronizedSet
-                        (new SecureSet<Principal>(this, PRINCIPAL_SET));
+                        (new SecureSet<>(this, PRINCIPAL_SET));
         this.pubCredentials = Collections.synchronizedSet
-                        (new SecureSet<Object>(this, PUB_CREDENTIAL_SET));
+                        (new SecureSet<>(this, PUB_CREDENTIAL_SET));
         this.privCredentials = Collections.synchronizedSet
-                        (new SecureSet<Object>(this, PRIV_CREDENTIAL_SET));
+                        (new SecureSet<>(this, PRIV_CREDENTIAL_SET));
     }
 
     /**
      * Create an instance of a {@code Subject} with
      * Principals and credentials.

@@ -204,15 +204,15 @@
     {
         collectionNullClean(principals);
         collectionNullClean(pubCredentials);
         collectionNullClean(privCredentials);
 
-        this.principals = Collections.synchronizedSet(new SecureSet<Principal>
+        this.principals = Collections.synchronizedSet(new SecureSet<>
                                 (this, PRINCIPAL_SET, principals));
-        this.pubCredentials = Collections.synchronizedSet(new SecureSet<Object>
+        this.pubCredentials = Collections.synchronizedSet(new SecureSet<>
                                 (this, PUB_CREDENTIAL_SET, pubCredentials));
-        this.privCredentials = Collections.synchronizedSet(new SecureSet<Object>
+        this.privCredentials = Collections.synchronizedSet(new SecureSet<>
                                 (this, PRIV_CREDENTIAL_SET, privCredentials));
         this.readOnly = readOnly;
     }
 
     /**

@@ -290,11 +290,11 @@
         Objects.requireNonNull(acc, ResourcesMgr.getString
                 ("invalid.null.AccessControlContext.provided"));
 
         // return the Subject from the DomainCombiner of the provided context
         return AccessController.doPrivileged
-            (new java.security.PrivilegedAction<Subject>() {
+            (new java.security.PrivilegedAction<>() {
             public Subject run() {
                 DomainCombiner dc = acc.getDomainCombiner();
                 if (!(dc instanceof SubjectDomainCombiner)) {
                     return null;
                 }

@@ -553,11 +553,11 @@
     private static AccessControlContext createContext(final Subject subject,
                                         final AccessControlContext acc) {
 
 
         return java.security.AccessController.doPrivileged
-            (new java.security.PrivilegedAction<AccessControlContext>() {
+            (new java.security.PrivilegedAction<>() {
             public AccessControlContext run() {
                 if (subject == null) {
                     return new AccessControlContext(acc, null);
                 } else {
                     return new AccessControlContext

@@ -799,29 +799,29 @@
 
             // check the principal and credential sets
             Set<Principal> thatPrincipals;
             synchronized(that.principals) {
                 // avoid deadlock from dual locks
-                thatPrincipals = new HashSet<Principal>(that.principals);
+                thatPrincipals = new HashSet<>(that.principals);
             }
             if (!principals.equals(thatPrincipals)) {
                 return false;
             }
 
             Set<Object> thatPubCredentials;
             synchronized(that.pubCredentials) {
                 // avoid deadlock from dual locks
-                thatPubCredentials = new HashSet<Object>(that.pubCredentials);
+                thatPubCredentials = new HashSet<>(that.pubCredentials);
             }
             if (!pubCredentials.equals(thatPubCredentials)) {
                 return false;
             }
 
             Set<Object> thatPrivCredentials;
             synchronized(that.privCredentials) {
                 // avoid deadlock from dual locks
-                thatPrivCredentials = new HashSet<Object>(that.privCredentials);
+                thatPrivCredentials = new HashSet<>(that.privCredentials);
             }
             if (!privCredentials.equals(thatPrivCredentials)) {
                 return false;
             }
             return true;

@@ -968,25 +968,25 @@
         Objects.requireNonNull(inputPrincs,
                 ResourcesMgr.getString("invalid.null.input.s."));
 
         // Rewrap the principals into a SecureSet
         try {
-            principals = Collections.synchronizedSet(new SecureSet<Principal>
+            principals = Collections.synchronizedSet(new SecureSet<>
                                 (this, PRINCIPAL_SET, inputPrincs));
         } catch (NullPointerException npe) {
             // Sometimes people deserialize the principals set only.
             // Subject is not accessible, so just don't fail.
             principals = Collections.synchronizedSet
-                        (new SecureSet<Principal>(this, PRINCIPAL_SET));
+                        (new SecureSet<>(this, PRINCIPAL_SET));
         }
 
         // The Credential {@code Set} is not serialized, but we do not
         // want the default deserialization routine to set it to null.
         this.pubCredentials = Collections.synchronizedSet
-                        (new SecureSet<Object>(this, PUB_CREDENTIAL_SET));
+                        (new SecureSet<>(this, PUB_CREDENTIAL_SET));
         this.privCredentials = Collections.synchronizedSet
-                        (new SecureSet<Object>(this, PRIV_CREDENTIAL_SET));
+                        (new SecureSet<>(this, PRIV_CREDENTIAL_SET));
     }
 
     /**
      * Tests for null-clean collections (both non-null reference and
      * no null elements)

@@ -1495,11 +1495,11 @@
 
             while (iterator.hasNext()) {
                 Object next;
                 if (which == Subject.PRIV_CREDENTIAL_SET) {
                     next = java.security.AccessController.doPrivileged
-                        (new java.security.PrivilegedAction<Object>() {
+                        (new java.security.PrivilegedAction<>() {
                         public Object run() {
                             return iterator.next();
                         }
                     });
                 } else {