docs: improve leader/followers

leader-followers/src/main/java/com/iluwatar/leaderfollowers/Task.java

@@ -24,29 +24,22 @@
  */
 package com.iluwatar.leaderfollowers;
 
+import lombok.Getter;
+import lombok.Setter;
+
 /**
  * A unit of work to be processed by the Workers.
  */
 public class Task {
 
+  @Getter
   private final int time;
 
+  @Getter
+  @Setter
   private boolean finished;
 
   public Task(int time) {
     this.time = time;
   }
-
-  public int getTime() {
-    return time;
-  }
-
-  public void setFinished() {
-    this.finished = true;
-  }
-
-  public boolean isFinished() {
-    return this.finished;
-  }
-
 }

leader-followers/src/main/java/com/iluwatar/leaderfollowers/TaskHandler.java

@@ -39,7 +39,6 @@ public class TaskHandler {
     var time = task.getTime();
     Thread.sleep(time);
     LOGGER.info("It takes " + time + " milliseconds to finish the task");
-    task.setFinished();
+    task.setFinished(true);
   }
-
 }

leader-followers/src/main/java/com/iluwatar/leaderfollowers/WorkCenter.java

@@ -26,6 +26,7 @@ package com.iluwatar.leaderfollowers;
 
 import java.util.List;
 import java.util.concurrent.CopyOnWriteArrayList;
+import lombok.Getter;
 
 /**
  * A WorkCenter contains a leader and a list of idle workers. The leader is responsible for
@@ -34,6 +35,7 @@ import java.util.concurrent.CopyOnWriteArrayList;
  */
 public class WorkCenter {
 
+  @Getter
   private Worker leader;
   private final List<Worker> workers = new CopyOnWriteArrayList<>();
 
@@ -56,16 +58,12 @@ public class WorkCenter {
     workers.remove(worker);
   }
 
-  public Worker getLeader() {
-    return leader;
-  }
-
   /**
    * Promote a leader.
    */
   public void promoteLeader() {
     Worker leader = null;
-    if (workers.size() > 0) {
+    if (!workers.isEmpty()) {
       leader = workers.get(0);
     }
     this.leader = leader;