SemaphoreDemo: Added comments

Technology/SemaphoreDemo/src/ProCon.java

@@ -28,7 +28,10 @@ class MyThread extends Thread
 	String threadName;
 	
 	public MyThread(Semaphore mySemPro, Semaphore mySemCon, String threadName) 
-	{ 
+	{
+		// The Thread class constructor that takes a String argument creates 
+		// a Thread with a specific name 
+		// (as opposed to automatically generated names such as Thread-1).
 		super(threadName);
 		// We set the semaphores from the main method
 		this.semPro = mySemPro;