Separating into Tech and SysDev

Technology/SemaphoreDemo/src/SemaphoreDemo.java

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+// java program to demonstrate 
+// use of semaphores Locks 
+import java.util.concurrent.*; 
+
+
+// Driver class 
+public class SemaphoreDemo 
+{ 
+	public static void main(String args[]) throws InterruptedException 
+	{ 
+		// creating a Semaphore object 
+		// A 1 means that you are allowed 1 write to start with
+		Semaphore semPro = new Semaphore(1);
+		// A 0 means that you are not allowed to read (as nobody has yet written to the buffer)
+		Semaphore semCon = new Semaphore(0);
+		
+		// creating two threads with name A and B 
+		// Note that thread A will increment the count 
+		// and thread B will decrement the count 
+		MyThread mt1 = new MyThread(semPro, semCon, "Producer"); 
+		MyThread mt2 = new MyThread(semPro, semCon, "Consumer"); 
+		
+		// stating threads A and B 
+		mt1.start(); 
+		mt2.start(); 
+		
+		// waiting for threads A and B 
+		mt1.join(); 
+		mt2.join(); 
+		
+		// count will always remain 0 after 
+		// both threads will complete their execution 
+		System.out.println("count: " + Shared.count); 
+	} 
+}