8305780: javax/swing/JTable/7068740/bug7068740.java fails on Ubunutu 20.04

Reviewed-by: serb, tr

Author: prsadhuk

test/jdk/javax/swing/JTable/7068740/bug7068740.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 2023, 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
@@ -26,79 +26,68 @@
  * @key headful
  * @bug 7068740
  * @summary JTable wrapped in JLayer can't use PGUP/PGDOWN keys
- * @author Vladislav Karnaukhov
  * @run main bug7068740
  */
 
-import javax.swing.*;
+import java.awt.Robot;
+import java.awt.event.KeyEvent;
+import javax.swing.JComponent;
+import javax.swing.JFrame;
+import javax.swing.JLayer;
+import javax.swing.JScrollPane;
+import javax.swing.JTable;
 import javax.swing.plaf.LayerUI;
 import javax.swing.plaf.metal.MetalLookAndFeel;
+import javax.swing.SwingUtilities;
+import javax.swing.UIManager;
+import javax.swing.UnsupportedLookAndFeelException;
 import javax.swing.table.DefaultTableModel;
-import java.awt.*;
-import java.awt.event.KeyEvent;
-import java.lang.reflect.InvocationTargetException;
 import java.util.concurrent.atomic.AtomicInteger;
 
-public class bug7068740 extends JFrame {
+public class bug7068740 {
 
     private static Robot robot = null;
     private static JTable table = null;
+    private static JFrame frame;
 
-    bug7068740() {
-        super();
-        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
-
-        DefaultTableModel model = new DefaultTableModel() {
-            @Override
-            public int getRowCount() {
-                return 20;
-            }
-
-            @Override
-            public int getColumnCount() {
-                return 2;
-            }
+    private static void setUp() throws Exception {
+        if (robot == null) {
+            robot = new Robot();
+            robot.setAutoDelay(100);
+        }
 
+        SwingUtilities.invokeAndWait(new Runnable() {
             @Override
-            public Object getValueAt(int row, int column) {
-                return "(" + row + "," + column + ")";
-            }
-        };
-
-        table = new JTable(model);
-        table.setRowSelectionInterval(0, 0);
-        LayerUI<JComponent> layerUI = new LayerUI<>();
-        JLayer<JComponent> layer = new JLayer<>(table, layerUI);
-        JScrollPane scrollPane = new JScrollPane(layer);
-        add(scrollPane);
-        pack();
-        setLocationRelativeTo(null);
-    }
-
-    private static void setUp() {
-        try {
-            if (robot == null) {
-                robot = new Robot();
-                robot.setAutoDelay(50);
+            public void run() {
+                DefaultTableModel model = new DefaultTableModel() {
+                    @Override
+                    public int getRowCount() {
+                        return 20;
+                    }
+
+                    @Override
+                    public int getColumnCount() {
+                        return 2;
+                    }
+
+                    @Override
+                    public Object getValueAt(int row, int column) {
+                        return "(" + row + "," + column + ")";
+                    }
+                };
+
+                table = new JTable(model);
+                table.setRowSelectionInterval(0, 0);
+                LayerUI<JComponent> layerUI = new LayerUI<>();
+                JLayer<JComponent> layer = new JLayer<>(table, layerUI);
+                JScrollPane scrollPane = new JScrollPane(layer);
+                frame = new JFrame();
+                frame.add(scrollPane);
+                frame.pack();
+                frame.setLocationRelativeTo(null);
+                frame.setVisible(true);
             }
-
-            SwingUtilities.invokeAndWait(new Runnable() {
-                @Override
-                public void run() {
-                    bug7068740 test = new bug7068740();
-                    test.setVisible(true);
-                }
-            });
-        } catch (InterruptedException e) {
-            e.printStackTrace();
-            throw new RuntimeException("Test failed");
-        } catch (InvocationTargetException e) {
-            e.printStackTrace();
-            throw new RuntimeException("Test failed");
-        } catch (AWTException e) {
-            e.printStackTrace();
-            throw new RuntimeException("Test failed");
-        }
+        });
     }
 
     private static int getSelectedRow() throws Exception {
@@ -123,6 +112,7 @@ private static void doTest() throws Exception {
             throw new RuntimeException("Test failed");
         }
 
+        robot.delay(1000);
         robot.keyPress(KeyEvent.VK_PAGE_UP);
         robot.keyRelease(KeyEvent.VK_PAGE_UP);
         robot.waitForIdle();
@@ -135,10 +125,18 @@ public static void main(String[] args) throws Exception {
         try {
             UIManager.setLookAndFeel(new MetalLookAndFeel());
             setUp();
+            robot.waitForIdle();
+            robot.delay(1000);
             doTest();
         } catch (UnsupportedLookAndFeelException e) {
             e.printStackTrace();
             throw new RuntimeException("Test failed");
+        } finally {
+            SwingUtilities.invokeAndWait(() -> {
+                if (frame != null) {
+                    frame.dispose();
+                }
+            });
         }
     }
 }