JAVA-24259 | small refactor for readability (#14602)

core-java-modules/core-java-concurrency-advanced/src/main/java/com/baeldung/concurrent/phaser/LongRunningAction.java

@@ -7,31 +7,37 @@ import java.util.concurrent.Phaser;
 
 class LongRunningAction implements Runnable {
 
-    private static Logger log = LoggerFactory.getLogger(LongRunningAction.class);
-    private String threadName;
-    private Phaser ph;
+    private static final Logger log = LoggerFactory.getLogger(LongRunningAction.class);
+    private final String threadName;
+    private final Phaser ph;
 
     LongRunningAction(String threadName, Phaser ph) {
         this.threadName = threadName;
         this.ph = ph;
+
+        this.randomWait();
+
         ph.register();
+        log.info("Thread {} registered during phase {}", threadName, ph.getPhase());
     }
 
     @Override
     public void run() {
-        log.info("This is phase {}", ph.getPhase());
-        log.info("Thread {} before long running action", threadName);
-        
+        log.info("Thread {} BEFORE long running action in phase {}", threadName, ph.getPhase());
+        ph.arriveAndAwaitAdvance();
+
+        randomWait();
+
+        log.info("Thread {} AFTER long running action in phase {}", threadName, ph.getPhase());
+        ph.arriveAndDeregister();
+    }
+
+    // Simulating real work
+    private void randomWait() {
         try {
-            Thread.sleep(2000);
+            Thread.sleep((long) (Math.random() * 100));
         } catch (InterruptedException e) {
             e.printStackTrace();
         }
-
-        log.debug("Thread {} action completed and waiting for others", threadName);
-        ph.arriveAndAwaitAdvance();
-        log.debug("Thread {} proceeding in phase {}", threadName, ph.getPhase());
-        
-        ph.arriveAndDeregister();
     }
 }