From 4f2420ae1f9f9da71d4bf3b81de81d8340480feb Mon Sep 17 00:00:00 2001
From: Arno Zeller <arno.zeller@sap.com>
Date: Tue, 2 Jun 2026 09:44:28 +0200
Subject: [PATCH] Add countdown latch and use while-true loop.

---
 .../swing/SwingWorker/TestDoneBeforeDoInBackground.java     | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/test/jdk/javax/swing/SwingWorker/TestDoneBeforeDoInBackground.java b/test/jdk/javax/swing/SwingWorker/TestDoneBeforeDoInBackground.java
index 56534928f6e..05de0a4566d 100644
--- a/test/jdk/javax/swing/SwingWorker/TestDoneBeforeDoInBackground.java
+++ b/test/jdk/javax/swing/SwingWorker/TestDoneBeforeDoInBackground.java
@@ -43,13 +43,15 @@ public class TestDoneBeforeDoInBackground {
     private static final AtomicBoolean doInBackgroundFinished = new AtomicBoolean(false);
     private static final AtomicBoolean doneFinished = new AtomicBoolean(false);
     private static final CountDownLatch doneLatch = new CountDownLatch(1);
+    private static final CountDownLatch workerStarted = new CountDownLatch(1);
 
     public static void main(String[] args) throws InterruptedException {
         SwingWorker<String, String> worker = new SwingWorker<>() {
             @Override
             protected String doInBackground() throws Exception {
                 try {
-                    while (!Thread.currentThread().isInterrupted()) {
+                    while (true) {
+                        workerStarted.countDown();
                         System.out.println("Working...");
                         Thread.sleep(WAIT_TIME);
                     }
@@ -121,7 +123,7 @@ public class TestDoneBeforeDoInBackground {
                 }
             });
         worker.execute();
-        Thread.sleep(WAIT_TIME * 3);
+        workerStarted.await();
 
         final long start = System.currentTimeMillis();
         worker.cancel(true);