diff --git a/test/jdk/java/awt/Multiscreen/DialogTest.java b/test/jdk/java/awt/Multiscreen/DialogTest.java
new file mode 100644
index 00000000000..fbd72bfd6f0
--- /dev/null
+++ b/test/jdk/java/awt/Multiscreen/DialogTest.java
@@ -0,0 +1,236 @@
+/*
+ * Copyright (c) 2001, 2025, 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.
+ *
+ * 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.
+ */
+
+import java.awt.Button;
+import java.awt.Color;
+import java.awt.Dialog;
+import java.awt.Dimension;
+import java.awt.Frame;
+import java.awt.GraphicsConfiguration;
+import java.awt.GraphicsDevice;
+import java.awt.GraphicsEnvironment;
+import java.awt.GridLayout;
+import java.awt.Label;
+import java.awt.Panel;
+import java.awt.Point;
+import java.awt.ScrollPane;
+
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+
+import javax.swing.JDialog;
+import javax.swing.JLabel;
+import javax.swing.WindowConstants;
+
+import jtreg.SkippedException;
+
+/*
+ * @test
+ * @bug 4368500
+ * @key multimon
+ * @summary Dialog needs a constructor with GraphicsConfiguration
+ * @library /java/awt/regtesthelpers /test/lib
+ * @build PassFailJFrame
+ * @run main/manual DialogTest
+ */
+
+public class DialogTest {
+    static GraphicsDevice[] gds;
+
+    private static Frame f;
+    private static Frame dummyFrame = new Frame();
+    private static Dialog dummyDialog = new Dialog(dummyFrame);
+
+    public static void main(String[] args) throws Exception {
+        gds = GraphicsEnvironment.getLocalGraphicsEnvironment().getScreenDevices();
+        if (gds.length < 2) {
+            throw new SkippedException("You have only one monitor in your system" +
+                                       " - test skipped");
+        }
+
+        String INSTRUCTIONS = """
+                This test tests the multiscreen functionality of Dialogs and JDialogs.
+                You should see the message "X screens detected", where X
+                is the number of screens on your system. If X is incorrect, press Fail.
+
+                In the test window, there are a list of buttons representing each
+                type of dialog for each screen.
+                If there aren't buttons for every screen in your system, press Fail.
+
+                Press each button, and the indicated type of dialog should appear
+                on the indicated screen.
+                Modal dialogs should not allow to click on the Instructions or
+                DialogTest windows.
+
+                The buttons turn yellow once they have been pressed, to keep track
+                of test progress.
+
+                If all Dialogs appear correctly, press Pass.
+                If Dialogs appear on the wrong screen or don't behave in
+                proper modality, press Fail.""";
+
+        PassFailJFrame.builder()
+                .instructions(INSTRUCTIONS)
+                .columns(40)
+                .logArea(5)
+                .testUI(DialogTest::init)
+                .build()
+                .awaitAndCheck();
+    }
+
+    public static Frame init() {
+        PassFailJFrame.log(gds.length + " screens detected.");
+        f = new Frame("DialogTest UI");
+        f.setSize(400, 400);
+        MyScrollPane sp = new MyScrollPane();
+
+        Panel p = new Panel();
+        p.setLayout(new GridLayout(0, 1));
+
+        for (int i = 0; i < gds.length; i++) {
+            Button btn;
+
+            //screen # , modal, frame-owned, swing
+            btn = new MyButton(new DialogInfo(i, false, false, false));
+            p.add(btn);
+
+            btn = new MyButton(new DialogInfo(i, true, false, false));
+            p.add(btn);
+
+            btn = new MyButton(new DialogInfo(i, false, true, false));
+            p.add(btn);
+
+            btn = new MyButton(new DialogInfo(i, true, true, false));
+            p.add(btn);
+
+            btn = new MyButton(new DialogInfo(i, false, false, true));
+            p.add(btn);
+
+            btn = new MyButton(new DialogInfo(i, true, false, true));
+            p.add(btn);
+
+            btn = new MyButton(new DialogInfo(i, false, true, true));
+            p.add(btn);
+
+            btn = new MyButton(new DialogInfo(i, true, true, true));
+            p.add(btn);
+
+        }
+        sp.add(p);
+        f.add(sp);
+        return f;
+    }
+
+    static class MyScrollPane extends ScrollPane {
+        @Override
+        public Dimension getPreferredSize() {
+            return f.getSize();
+        }
+    }
+
+    static class MyButton extends Button {
+        public MyButton(DialogInfo info) {
+            setLabel(info.toString());
+            addActionListener(new PutupDialog(info));
+        }
+    }
+
+    static class PutupDialog implements ActionListener {
+        DialogInfo info;
+
+        public PutupDialog(DialogInfo info) {
+            this.info = info;
+        }
+
+        @Override
+        public void actionPerformed(ActionEvent e) {
+            ((Button) (e.getSource())).setBackground(Color.yellow);
+            Dialog d = info.createDialog();
+            d.show();
+        }
+    }
+
+    static class DialogInfo {
+        int num;
+        boolean modal;
+        boolean frameOwned;
+        boolean swing;
+
+        public DialogInfo(int num, boolean modal, boolean frameOwned, boolean swing) {
+            this.num = num;
+            this.modal = modal;
+            this.frameOwned = frameOwned;
+            this.swing = swing;
+        }
+
+        public Dialog createDialog() {
+            GraphicsConfiguration gc = gds[num].getDefaultConfiguration();
+
+            Dialog d;
+
+            if (swing) {
+                if (frameOwned) {
+                    d = new JDialog(dummyFrame, toString(), modal, gc);
+                } else {
+                    d = new JDialog(dummyDialog, toString(), modal, gc);
+                }
+
+                ((JDialog) d).setDefaultCloseOperation(WindowConstants.HIDE_ON_CLOSE);
+                if (modal) {
+                    ((JDialog) d).getContentPane().add(new JLabel("Check that I am modal!"));
+                }
+            } else {
+                if (frameOwned) {
+                    d = new Dialog(dummyFrame, toString(), modal, gc);
+                } else {
+                    d = new Dialog(dummyDialog, toString(), modal, gc);
+                }
+
+                d.addWindowListener(new WindowAdapter() {
+                    public void windowClosing(WindowEvent e) {
+                        e.getComponent().hide();
+                    }
+                });
+                if (modal) {
+                    d.add(new Label("Check that I am modal!"));
+                }
+            }
+
+            d.setLocation(new Point((int) (gc.getBounds().getX() + 20)
+                          , (int) (gc.getBounds().getY() + 20)));
+            d.setSize(300, 100);
+
+            return d;
+        }
+
+        public String toString() {
+            return "Screen " + num + (frameOwned ? " Frame-owned" : " Dialog-owned")
+                    + (modal ? " modal " : " non-modal ")
+                    + (swing ? "JDialog" : "Dialog");
+        }
+    }
+}
+
+
diff --git a/test/jdk/java/awt/Multiscreen/FillThisScreen.java b/test/jdk/java/awt/Multiscreen/FillThisScreen.java
new file mode 100644
index 00000000000..542127827ec
--- /dev/null
+++ b/test/jdk/java/awt/Multiscreen/FillThisScreen.java
@@ -0,0 +1,140 @@
+/*
+ * Copyright (c) 2001, 2025, 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.
+ *
+ * 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.
+ */
+
+import java.awt.Button;
+import java.awt.Frame;
+import java.awt.GraphicsConfiguration;
+import java.awt.GraphicsDevice;
+import java.awt.GraphicsEnvironment;
+import java.awt.GridLayout;
+import java.awt.Rectangle;
+
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
+import jtreg.SkippedException;
+
+/*
+ * @test
+ * @bug 4356756
+ * @key multimon
+ * @summary Return all screen devices for physical and virtual display devices
+ * @library /java/awt/regtesthelpers /test/lib
+ * @build PassFailJFrame
+ * @run main/manual FillThisScreen
+ */
+
+public class FillThisScreen {
+    private static Frame f;
+    private static Button b;
+    private static Rectangle oldSize;
+    private static boolean fillmode = true;
+    static GraphicsDevice[] gs;
+
+    public static void main(String[] args) throws Exception {
+        gs = GraphicsEnvironment.getLocalGraphicsEnvironment().getScreenDevices();
+        if (gs.length < 2) {
+            throw new SkippedException("You have only one monitor in your system" +
+                                       " - test skipped");
+        }
+
+        String INSTRUCTIONS = """
+                This test is for testing the bounds of a multimonitor system.
+                You will see a Frame with several buttons: one marked 'Fill
+                This Screen' and an additional button for each display on your system.
+
+                First, drag the Frame onto each display and click the
+                'Fill This Screen' button.
+
+                The Frame should resize to take up the entire display area
+                of the screen it is on, and the button text changes to say,
+                'Get Smaller'.
+
+                Click the button again to restore the Frame.
+
+                Next, use the 'Move to screen' buttons to move the Frame to
+                each display and again click the 'Fill This Screen' button.
+
+                If the number of 'Move to Screen' buttons is not equals to
+                the number of screens on your system, the test fails.
+
+                If the Frame always correctly resizes to take up ONLY the
+                entire screen it is on (and not a different screen, or all
+                screens), the test passes else it fails.""";
+
+        PassFailJFrame.builder()
+                .instructions(INSTRUCTIONS)
+                .columns(40)
+                .testUI(FillThisScreen::init)
+                .build()
+                .awaitAndCheck();
+    }
+
+    public static Frame init() {
+        Button tempBtn;
+
+        f = new Frame("Drag Me Around");
+        f.setLayout(new GridLayout(0, 1));
+
+        b = new Button("Fill This Screen");
+        b.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                if (fillmode) {
+                    oldSize = f.getBounds();
+                    Rectangle r = f.getGraphicsConfiguration().getBounds();
+                    f.setBounds(r);
+                    b.setLabel("Get Smaller");
+                } else {
+                    f.setBounds(oldSize);
+                    b.setLabel("Fill This Screen");
+                }
+                fillmode = !fillmode;
+            }
+        });
+        f.add(b);
+
+        for (int i = 0; i < gs.length; i++) {
+            tempBtn = new Button("Move to screen:" + i);
+            tempBtn.addActionListener(new WinMover(i));
+            f.add(tempBtn);
+        }
+        f.setSize(300, 100);
+        return f;
+    }
+
+    private static class WinMover implements ActionListener {
+        int scrNum;
+
+        public WinMover(int scrNum) {
+            this.scrNum = scrNum;
+        }
+
+        public void actionPerformed(ActionEvent e) {
+            Rectangle newBounds = gs[scrNum].getDefaultConfiguration().getBounds();
+            f.setLocation(newBounds.x + newBounds.width / 2,
+                    newBounds.y + newBounds.height / 2);
+        }
+
+    }
+}
diff --git a/test/jdk/java/awt/Multiscreen/IMCandidateWindowTest.java b/test/jdk/java/awt/Multiscreen/IMCandidateWindowTest.java
new file mode 100644
index 00000000000..6af3188156d
--- /dev/null
+++ b/test/jdk/java/awt/Multiscreen/IMCandidateWindowTest.java
@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2005, 2025, 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.
+ *
+ * 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.
+ */
+
+import java.awt.FlowLayout;
+import java.awt.GraphicsConfiguration;
+import java.awt.GraphicsDevice;
+import java.awt.GraphicsEnvironment;
+import java.awt.Rectangle;
+
+import javax.swing.JFrame;
+import javax.swing.JTextField;
+
+import jtreg.SkippedException;
+
+/*
+ * @test
+ * @bug 4805862
+ * @key multimon
+ * @requires (os.family == "windows")
+ * @summary Tests IM candidate window is positioned correctly for the
+ *          text components inside a window in multiscreen configurations, if
+ *          this window has negative coordinates
+ * @library /java/awt/regtesthelpers /test/lib
+ * @build PassFailJFrame
+ * @run main/manual IMCandidateWindowTest
+ */
+
+public class IMCandidateWindowTest {
+    static GraphicsConfiguration gc;
+
+    public static void main(String[] args) throws Exception {
+        GraphicsDevice[] gds = GraphicsEnvironment.getLocalGraphicsEnvironment()
+                               .getScreenDevices();
+        if (gds.length < 2) {
+            throw new SkippedException("You have only one monitor in your system" +
+                                       " - test skipped");
+        }
+
+        GraphicsDevice gd = null;
+
+        for (int i = 0; i < gds.length; i++) {
+            gc = gds[i].getDefaultConfiguration();
+            if ((gc.getBounds().x < 0) || (gc.getBounds().y < 0)) {
+                gd = gds[i];
+                break;
+            }
+        }
+
+        if (gd == null) {
+            // no screens with negative coords
+            throw new SkippedException("No screens with negative coords - test skipped");
+        }
+
+        String INSTRUCTIONS = """
+                This test is for windows
+                Test requirements: installed support for asian languages
+                Chinese (PRC) w/ Chinese QuanPing input method.
+                Multiscreen environment where one of the monitors has negative coords
+                Go to the text field in the opened Frame. Switch to Chinese language and
+                start typing "ka".
+                Note, that IM helper window is appeared.
+                If this window is appeared near the text field, press PASS button.
+                If this window is appeared at the edge of the screen or on another
+                screen, press FAIL button""";
+
+        PassFailJFrame.builder()
+                .instructions(INSTRUCTIONS)
+                .columns(40)
+                .testUI(IMCandidateWindowTest::createUI)
+                .build()
+                .awaitAndCheck();
+    }
+
+    public static JFrame createUI() {
+        Rectangle b = gc.getBounds();
+
+        JFrame f = new JFrame("Frame", gc);
+        f.setBounds(b.x + b.width / 2 - 150, b.y + b.height / 2 - 100, 300, 200);
+        f.getContentPane().setLayout(new FlowLayout());
+        JTextField tf = new JTextField(10);
+        f.getContentPane().add(tf);
+        return f;
+    }
+}