Semaphores refactor

core-java/src/main/java/com/baeldung/concurrent/semaphores/CounterUsingMutex.java

@@ -2,17 +2,17 @@ package com.baeldung.concurrent.semaphores;
 
 import java.util.concurrent.Semaphore;
 
-public class CounterUsingMutex {
+class CounterUsingMutex {
 
     private final Semaphore mutex;
     private int count;
 
-    public CounterUsingMutex() {
+    CounterUsingMutex() {
         mutex = new Semaphore(1);
         count = 0;
     }
 
-    public void increase() throws InterruptedException {
+    void increase() throws InterruptedException {
         mutex.acquire();
         this.count = this.count + 1;
         Thread.sleep(1000);
@@ -20,11 +20,11 @@ public class CounterUsingMutex {
 
     }
 
-    public int getCount() {
+    int getCount() {
         return this.count;
     }
 
-    public boolean hasQueuedThreads() {
+    boolean hasQueuedThreads() {
         return mutex.hasQueuedThreads();
     }
 

core-java/src/main/java/com/baeldung/concurrent/semaphores/DelayQueueUsingTimedSemaphore.java

@@ -4,19 +4,19 @@ import java.util.concurrent.TimeUnit;
 
 import org.apache.commons.lang3.concurrent.TimedSemaphore;
 
-public class DelayQueueUsingTimedSemaphore {
+class DelayQueueUsingTimedSemaphore {
 
     private final TimedSemaphore semaphore;
 
-    public DelayQueueUsingTimedSemaphore(long period, int slotLimit) {
+    DelayQueueUsingTimedSemaphore(long period, int slotLimit) {
         semaphore = new TimedSemaphore(period, TimeUnit.SECONDS, slotLimit);
     }
 
-    public boolean tryAdd() {
+    boolean tryAdd() {
         return semaphore.tryAcquire();
     }
 
-    public int availableSlots() {
+    int availableSlots() {
         return semaphore.getAvailablePermits();
     }
 

core-java/src/main/java/com/baeldung/concurrent/semaphores/LoginQueueUsingSemaphore.java

@@ -2,23 +2,23 @@ package com.baeldung.concurrent.semaphores;
 
 import java.util.concurrent.Semaphore;
 
-public class LoginQueueUsingSemaphore {
+class LoginQueueUsingSemaphore {
 
     private final Semaphore semaphore;
 
-    public LoginQueueUsingSemaphore(int slotLimit) {
+    LoginQueueUsingSemaphore(int slotLimit) {
         semaphore = new Semaphore(slotLimit);
     }
 
-    public boolean tryLogin() {
+    boolean tryLogin() {
         return semaphore.tryAcquire();
     }
 
-    public void logout() {
+    void logout() {
         semaphore.release();
     }
 
-    public int availableSlots() {
+    int availableSlots() {
         return semaphore.availablePermits();
     }