--- a/test/jdk/java/net/DatagramSocket/ReuseAddressTest.java	Thu Aug 08 18:44:11 2019 +0100
+++ b/test/jdk/java/net/DatagramSocket/ReuseAddressTest.java	Thu Aug 08 21:58:11 2019 +0100
@@ -30,6 +30,9 @@
 /*
  * @test
  * @bug 8153674
+ * @key intermittent
+ * @summary This test might fail intermittently as it needs a UDP socket that
+ *          binds to the wildcard address.
  * @summary Expected SocketException not thrown when calling bind() with
  *   setReuseAddress(false)
  * @run main/othervm ReuseAddressTest

--- a/test/jdk/java/net/DatagramSocket/SendSize.java	Thu Aug 08 18:44:11 2019 +0100
+++ b/test/jdk/java/net/DatagramSocket/SendSize.java	Thu Aug 08 21:58:11 2019 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2019, 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
@@ -36,13 +36,16 @@
 import java.net.DatagramPacket;
 import java.net.DatagramSocket;
 import java.net.InetAddress;
+import java.net.InetSocketAddress;
 
 public class SendSize {
     static final int bufferLength = 512;
     static final int packetLength = 256;
 
     public static void main(String[] args) throws Exception {
-        DatagramSocket serverSocket = new DatagramSocket();
+        DatagramSocket serverSocket = new DatagramSocket(
+                new InetSocketAddress(InetAddress.getLocalHost(), 0)
+        );
         Thread server = new ServerThread(serverSocket);
         server.start();
         Thread client = new ClientThread(serverSocket.getLocalPort());

--- a/test/jdk/java/net/DatagramSocket/SetDatagramSocketImplFactory/ADatagramSocket.java	Thu Aug 08 18:44:11 2019 +0100
+++ b/test/jdk/java/net/DatagramSocket/SetDatagramSocketImplFactory/ADatagramSocket.java	Thu Aug 08 21:58:11 2019 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2019, 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
@@ -31,9 +31,10 @@
 import java.io.*;
 import java.net.*;
 import java.util.*;
+import java.util.concurrent.CountDownLatch;
 
 public class ADatagramSocket {
-    public static void main(String[] args) throws IOException {
+    public static void main(String[] args) throws Exception {
         // testing out setDatagramSocketImplFactory
         System.err.println("setting DatagramSocketImplFactory...");
         try {
@@ -46,6 +47,8 @@
         int port = server.getPort();
         System.out.println("Server port is " + port);
         server.start();
+        // Wait server thread to reach receive call
+        server.readyToStart.await();
 
         // get a datagram socket
         DatagramSocket socket = new DatagramSocket();
@@ -72,6 +75,7 @@
 
     protected DatagramSocket socket = null;
     private final int port;
+    final CountDownLatch readyToStart = new CountDownLatch(1);
 
     public QuoteServerThread() throws IOException {
         this("QuoteServerThread");
@@ -79,7 +83,7 @@
 
     public QuoteServerThread(String name) throws IOException {
         super(name);
-        socket = new DatagramSocket(0);
+        socket = new DatagramSocket(0, InetAddress.getLocalHost());
         port =  socket.getLocalPort();
     }
     public int getPort(){
@@ -92,6 +96,8 @@
 
         // receive request
         DatagramPacket packet = new DatagramPacket(buf, buf.length);
+        // Notify client that server is ready to receive packet
+        readyToStart.countDown();
         socket.receive(packet);
 
         // figure out response

--- a/test/jdk/java/net/ServerSocket/AcceptCauseFileDescriptorLeak.java	Thu Aug 08 18:44:11 2019 +0100
+++ b/test/jdk/java/net/ServerSocket/AcceptCauseFileDescriptorLeak.java	Thu Aug 08 21:58:11 2019 +0100
@@ -26,8 +26,11 @@
  *
  * @test
  * @bug 6368984
+ * @key intermittent
  * @summary Configuring unconnected Socket before passing to implAccept
- *          can cause fd leak
+ *          can cause fd leak.
+ *          This test may fail intermittently if foreign processes will
+ *          try to establish connection to the test server socket.
  * @requires (os.family != "windows")
  * @library /test/lib
  * @build jdk.test.lib.Utils
@@ -43,6 +46,7 @@
 
 import java.io.IOException;
 import java.net.InetAddress;
+import java.net.InetSocketAddress;
 import java.net.ServerSocket;
 import java.net.Socket;
 import java.util.List;
@@ -82,7 +86,7 @@
             }
         }
 
-        final ServerSocket ss = new ServerSocket(0, 0, InetAddress.getLoopbackAddress()) {
+        final ServerSocket ss = new ServerSocket() {
             public Socket accept() throws IOException {
                 Socket s = new Socket() {
                 };
@@ -91,23 +95,29 @@
                 return s;
             }
         };
+        ss.bind(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0));
         Thread t = new Thread(new Runnable() {
             public void run() {
+                int repsCompleted = 0;
                 try {
-                    for (int i = 0; i < REPS; i++) {
+                    for (; repsCompleted < REPS; repsCompleted++) {
                         (new Socket(InetAddress.getLoopbackAddress(), ss.getLocalPort())).close();
                     }
                 } catch (IOException e) {
                     e.printStackTrace();
+                } finally {
+                    System.out.println("Client iterations completed:" + repsCompleted);
                 }
             }
         });
         t.start();
+        int repsCompleted = 0;
         try {
-            for (int i = 0; i < REPS; i++) {
+            for (; repsCompleted < REPS; repsCompleted++) {
                 ss.accept().close();
             }
         } finally {
+            System.out.println("Server iterations completed:" + repsCompleted);
             ss.close();
         }
         t.join();

--- a/test/jdk/java/net/Socket/NullHost.java	Thu Aug 08 18:44:11 2019 +0100
+++ b/test/jdk/java/net/Socket/NullHost.java	Thu Aug 08 21:58:11 2019 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 2019, 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
@@ -36,7 +36,10 @@
 
         public Server() throws IOException {
             svr = new ServerSocket();
-            svr.bind(new InetSocketAddress(0));
+            // The client side calls Socket((String) null, ...) which
+            // resolves to InetAddress.getByName((String)null) which in
+            // turns will resolve to the loopback address
+            svr.bind(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0));
         }
 
         public int getPort() {

--- a/test/jdk/java/net/Socket/ProxyCons.java	Thu Aug 08 18:44:11 2019 +0100
+++ b/test/jdk/java/net/Socket/ProxyCons.java	Thu Aug 08 21:58:11 2019 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2019, 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
@@ -64,12 +64,14 @@
     }
 
     void test() throws Exception {
-        ServerSocket ss = new ServerSocket(0);
+        InetAddress localHost = InetAddress.getLocalHost();
+        ServerSocket ss = new ServerSocket();
+        ss.bind(new InetSocketAddress(localHost, 0));
         try {
             Server s = new Server(ss);
             s.start();
             Socket sock = new Socket(Proxy.NO_PROXY);
-            sock.connect(new InetSocketAddress("localhost", ss.getLocalPort()));
+            sock.connect(new InetSocketAddress(localHost, ss.getLocalPort()));
             s.done();
             sock.close();
         } catch (java.io.IOException e) {

--- a/test/jdk/java/net/Socket/SocksConnectTimeout.java	Thu Aug 08 18:44:11 2019 +0100
+++ b/test/jdk/java/net/Socket/SocksConnectTimeout.java	Thu Aug 08 21:58:11 2019 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2010, 2019, 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
@@ -53,7 +53,9 @@
         IPSupport.throwSkippedExceptionIfNonOperational();
 
         try {
-            serverSocket = new ServerSocket(0);
+            serverSocket = new ServerSocket();
+            InetAddress localHost = InetAddress.getLocalHost();
+            serverSocket.bind(new InetSocketAddress(localHost, 0));
 
             (new Thread() {
                 @Override
@@ -61,7 +63,7 @@
             }).start();
 
             Proxy socksProxy = new Proxy(Proxy.Type.SOCKS,
-                new InetSocketAddress(InetAddress.getLocalHost(), serverSocket.getLocalPort()));
+                    new InetSocketAddress(localHost, serverSocket.getLocalPort()));
 
             test(socksProxy);
         } catch (IOException e) {

--- a/test/jdk/java/net/Socket/TestClose.java	Thu Aug 08 18:44:11 2019 +0100
+++ b/test/jdk/java/net/Socket/TestClose.java	Thu Aug 08 21:58:11 2019 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2019, 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
@@ -44,9 +44,11 @@
         InetAddress ad1, ad2;
         int port1, port2, serverport;
 
-        ss = new ServerSocket(0);
+        InetAddress loopback = InetAddress.getLoopbackAddress();
+        ss = new ServerSocket();
+        ss.bind(new InetSocketAddress(loopback, 0));
         serverport = ss.getLocalPort();
-        s = new Socket("localhost", serverport);
+        s = new Socket(loopback, serverport);
         s.close();
         ss.close();
         ad1 = ss.getInetAddress();

--- a/test/jdk/java/net/URLClassLoader/ClassLoad.java	Thu Aug 08 18:44:11 2019 +0100
+++ b/test/jdk/java/net/URLClassLoader/ClassLoad.java	Thu Aug 08 21:58:11 2019 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2019, 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
@@ -25,24 +25,29 @@
  * @test
  * @bug 4151665
  * @modules jdk.httpserver
+ * @library /test/lib
  * @summary Test for FileNotFoundException when loading bogus class
  */
 
 import java.io.InputStream;
 import java.io.IOException;
+import java.net.InetAddress;
 import java.net.InetSocketAddress;
 import java.net.URL;
 import java.net.URLClassLoader;
 import com.sun.net.httpserver.HttpExchange;
 import com.sun.net.httpserver.HttpHandler;
 import com.sun.net.httpserver.HttpServer;
+import jdk.test.lib.net.URIBuilder;
 
 public class ClassLoad {
      public static void main(String[] args) throws Exception {
          boolean error = true;
 
          // Start a dummy server to return 404
-         HttpServer server = HttpServer.create(new InetSocketAddress(0), 0);
+         HttpServer server = HttpServer.create();
+         server.bind(new InetSocketAddress(
+                 InetAddress.getLoopbackAddress(), 0), 0);
          HttpHandler handler = new HttpHandler() {
              public void handle(HttpExchange t) throws IOException {
                  InputStream is = t.getRequestBody();
@@ -56,7 +61,11 @@
 
          // Client request
          try {
-             URL url = new URL("http://localhost:" + server.getAddress().getPort());
+             URL url = URIBuilder.newBuilder()
+                     .scheme("http")
+                     .loopback()
+                     .port(server.getAddress().getPort())
+                     .toURL();
              String name = args.length >= 2 ? args[1] : "foo.bar.Baz";
              ClassLoader loader = new URLClassLoader(new URL[] { url });
              System.out.println(url);

--- a/test/jdk/java/net/URLClassLoader/closetest/CloseTest.java	Thu Aug 08 18:44:11 2019 +0100
+++ b/test/jdk/java/net/URLClassLoader/closetest/CloseTest.java	Thu Aug 08 21:58:11 2019 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2009, 2019, 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
@@ -168,7 +168,9 @@
     }
 
     static void startHttpServer(String docroot) throws Exception {
-        httpServer = HttpServer.create(new InetSocketAddress(0), 10);
+        httpServer = HttpServer.create(
+                new InetSocketAddress(InetAddress.getLoopbackAddress(), 0),
+                10);
         HttpContext ctx = httpServer.createContext(
                 "/", new FileServerHandler(docroot)
         );

--- a/test/jdk/java/net/URLConnection/HandleContentTypeWithAttrs.java	Thu Aug 08 18:44:11 2019 +0100
+++ b/test/jdk/java/net/URLConnection/HandleContentTypeWithAttrs.java	Thu Aug 08 21:58:11 2019 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2019, 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
@@ -24,8 +24,9 @@
 /*
  * @test
  * @bug 4160200
- * @summary Make sure URLConnection.getContnentHandler
+ * @summary Make sure URLConnection.getContentHandler
  *     can handle MIME types with attributes
+ * @library /test/lib
  * @modules java.base/sun.net.www java.base/sun.net.www.content.text
  */
 import java.net.*;
@@ -34,6 +35,8 @@
 import sun.net.www.MessageHeader;
 import static java.net.Proxy.NO_PROXY;
 
+import jdk.test.lib.net.URIBuilder;
+
 public class HandleContentTypeWithAttrs {
 
     URL url;
@@ -43,7 +46,12 @@
         // Request echo.html from myHttpServer.
         // In the header of the response, we make
         // the content type have some attributes.
-        url = new URL("http://localhost:" + port + "/echo.html");
+        url = URIBuilder.newBuilder()
+                .scheme("http")
+                .loopback()
+                .port(port)
+                .path("/echo.html")
+                .toURL();
         URLConnection urlConn = url.openConnection(NO_PROXY);
 
         // the method getContent() calls the method
@@ -135,7 +143,8 @@
     /** Start a server on port <i>port</i>.  It will call serviceRequest()
         for each new connection. */
     final public void startServer(int port) throws IOException {
-        serverSocket = new ServerSocket(port, 50);
+        serverSocket = new ServerSocket(port, 50,
+                InetAddress.getLoopbackAddress());
         serverInstance = new Thread(this);
         serverInstance.start();
     }
@@ -219,10 +228,13 @@
 
     public myHttpServer () {
         try {
-            defaultContext
-            = new URL("http", InetAddress.getLocalHost().getHostName(), "/");
+            defaultContext = URIBuilder.newBuilder()
+                    .scheme("http")
+                    .loopback()
+                    .path("/")
+                    .toURL();
         } catch(Exception e) {
-            System.out.println("Failed to construct defauit URL context: "
+            System.out.println("Failed to construct default URL context: "
                                + e);
             e.printStackTrace();
         }

--- a/test/jdk/java/net/URLConnection/RedirectLimit.java	Thu Aug 08 18:44:11 2019 +0100
+++ b/test/jdk/java/net/URLConnection/RedirectLimit.java	Thu Aug 08 21:58:11 2019 +0100
@@ -35,11 +35,12 @@
 
 import java.io.*;
 import java.net.*;
+import java.util.concurrent.CountDownLatch;
 
 import jdk.test.lib.net.URIBuilder;
 
 class RedirLimitServer extends Thread {
-    static final int TIMEOUT = 10 * 1000;
+    static final int TIMEOUT = 20 * 1000;
     static final int NUM_REDIRECTS = 9;
 
     static final String reply1 = "HTTP/1.1 307 Temporary Redirect\r\n" +
@@ -59,6 +60,7 @@
 
     final ServerSocket ss;
     final int port;
+    final CountDownLatch readyToStart = new CountDownLatch(1);
 
     RedirLimitServer(ServerSocket ss) throws IOException {
         this.ss = ss;
@@ -85,6 +87,7 @@
 
     public void run() {
         try {
+            readyToStart.countDown();
             for (int i=0; i<NUM_REDIRECTS; i++) {
                 try (Socket s = ss.accept()) {
                     s.setSoTimeout(TIMEOUT);
@@ -100,33 +103,32 @@
             }
         } catch (Exception e) {
             e.printStackTrace();
-        } finally {
-            try { ss.close(); } catch (IOException unused) {}
         }
     }
 };
 
 public class RedirectLimit {
     public static void main(String[] args) throws Exception {
-        ServerSocket ss = new ServerSocket(0, 0, InetAddress.getLoopbackAddress());
-        int port = ss.getLocalPort();
-        RedirLimitServer server = new RedirLimitServer(ss);
-        server.start();
+        try (ServerSocket ss = new ServerSocket(0, 0, InetAddress.getLoopbackAddress())) {
+            int port = ss.getLocalPort();
+            RedirLimitServer server = new RedirLimitServer(ss);
+            server.start();
+            server.readyToStart.await();
+            URL url = URIBuilder.newBuilder()
+                    .scheme("http")
+                    .loopback()
+                    .port(port)
+                    .toURL();
+            URLConnection conURL = url.openConnection(Proxy.NO_PROXY);
 
-        URL url = URIBuilder.newBuilder()
-                .scheme("http")
-                .loopback()
-                .port(port)
-                .toURL();
-        URLConnection conURL =  url.openConnection();
+            conURL.setDoInput(true);
+            conURL.setAllowUserInteraction(false);
+            conURL.setUseCaches(false);
 
-        conURL.setDoInput(true);
-        conURL.setAllowUserInteraction(false);
-        conURL.setUseCaches(false);
-
-        try (InputStream in = conURL.getInputStream()) {
-            if ((in.read() != (int)'W') || (in.read()!=(int)'o')) {
-                throw new RuntimeException("Unexpected string read");
+            try (InputStream in = conURL.getInputStream()) {
+                if ((in.read() != (int) 'W') || (in.read() != (int) 'o')) {
+                    throw new RuntimeException("Unexpected string read");
+                }
             }
         }
     }