1110 
1111 final class FilePermissionCollection extends PermissionCollection
1112     implements Serializable
1113 {
1114     // Not serialized; see serialization section at end of class
1115     private transient ConcurrentHashMap<String, Permission> perms;
1116 
1117     /**
1118      * Create an empty FilePermissionCollection object.
1119      */
1120     public FilePermissionCollection() {
1121         perms = new ConcurrentHashMap<>();
1122     }
1123 
1124     /**
1125      * Adds a permission to the FilePermissionCollection. The key for the hash is
1126      * permission.path.
1127      *
1128      * @param permission the Permission object to add.
1129      *
1130      * @exception IllegalArgumentException - if the permission is not a
1131      *                                       FilePermission
1132      *
1133      * @exception SecurityException - if this FilePermissionCollection object
1134      *                                has been marked readonly
1135      */
1136     @Override
1137     public void add(Permission permission) {
1138         if (! (permission instanceof FilePermission))
1139             throw new IllegalArgumentException("invalid permission: "+
1140                                                permission);
1141         if (isReadOnly())
1142             throw new SecurityException(
1143                 "attempt to add a Permission to a readonly PermissionCollection");
1144 
1145         FilePermission fp = (FilePermission)permission;
1146 
1147         // Add permission to map if it is absent, or replace with new
1148         // permission if applicable.
1149         perms.merge(fp.getName(), fp,
1150             new java.util.function.BiFunction<>() {
1151                 @Override
1152                 public Permission apply(Permission existingVal,
1153                                         Permission newVal) {

1110 
1111 final class FilePermissionCollection extends PermissionCollection
1112     implements Serializable
1113 {
1114     // Not serialized; see serialization section at end of class
1115     private transient ConcurrentHashMap<String, Permission> perms;
1116 
1117     /**
1118      * Create an empty FilePermissionCollection object.
1119      */
1120     public FilePermissionCollection() {
1121         perms = new ConcurrentHashMap<>();
1122     }
1123 
1124     /**
1125      * Adds a permission to the FilePermissionCollection. The key for the hash is
1126      * permission.path.
1127      *
1128      * @param permission the Permission object to add.
1129      *
1130      * @throws    IllegalArgumentException - if the permission is not a
1131      *                                       FilePermission
1132      *
1133      * @throws    SecurityException - if this FilePermissionCollection object
1134      *                                has been marked readonly
1135      */
1136     @Override
1137     public void add(Permission permission) {
1138         if (! (permission instanceof FilePermission))
1139             throw new IllegalArgumentException("invalid permission: "+
1140                                                permission);
1141         if (isReadOnly())
1142             throw new SecurityException(
1143                 "attempt to add a Permission to a readonly PermissionCollection");
1144 
1145         FilePermission fp = (FilePermission)permission;
1146 
1147         // Add permission to map if it is absent, or replace with new
1148         // permission if applicable.
1149         perms.merge(fp.getName(), fp,
1150             new java.util.function.BiFunction<>() {
1151                 @Override
1152                 public Permission apply(Permission existingVal,
1153                                         Permission newVal) {