diff a/src/jdk.net/share/classes/jdk/net/UnixDomainPrincipal.java b/src/jdk.net/share/classes/jdk/net/UnixDomainPrincipal.java
--- /dev/null
+++ b/src/jdk.net/share/classes/jdk/net/UnixDomainPrincipal.java
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.net;
+
+import java.nio.file.attribute.UserPrincipal;
+import java.nio.file.attribute.GroupPrincipal;
+import java.util.Objects;
+
+/**
+ * Represents the credentials of a peer connected to a
+ * <a href="../../../java.base/java/nio/channels/package-summary.html#unixdomain">
+ * Unix domain</a> socket.
+ *
+ * @since 16
+ */
+
+public final class UnixDomainPrincipal {
+    private final UserPrincipal user;
+    private final GroupPrincipal group;
+
+    /**
+     * Creates a UnixDomainPrincipal.
+     *
+     * @param user the user identity
+     *
+     * @param group the group identity
+     *
+     * @throws NullPointerException if {@code user} or {@code group} are {@code null}.
+     */
+    public UnixDomainPrincipal(UserPrincipal user, GroupPrincipal group) {
+        this.user = Objects.requireNonNull(user);
+        this.group = Objects.requireNonNull(group);
+    }
+
+    /**
+     * Returns true if {@code obj} is a {@code UnixDomainPrincipal}
+     * and its user and group are equal to this user and group.
+     *
+     * @param obj the object to compare with
+     * @return true if this equal to obj
+     */
+    public boolean equals(Object obj) {
+        if (obj instanceof UnixDomainPrincipal) {
+            UnixDomainPrincipal that = (UnixDomainPrincipal) obj;
+            return Objects.equals(this.user, that.user)
+                    && Objects.equals(this.group, that.group);
+        }
+        return false;
+    }
+
+    /**
+     * Returns a hashcode calculated from the user and group
+     */
+    public int hashCode() {
+        return Objects.hash(user, group);
+    }
+
+    /**
+     * Returns this object's {@link UserPrincipal}
+     *
+     * @return this object's user
+     */
+    public UserPrincipal user() {
+        return user;
+    }
+
+    /**
+     * Returns this object's {@link GroupPrincipal}
+     *
+     * @return this object's user
+     */
+    public GroupPrincipal group() {
+        return group;
+    }
+}