Replace Java's CyclicBarrier with a stub implementation

Author: arnab

Barrier.java

@@ -0,0 +1,9 @@
+public class Barrier {
+  public Barrier(int numThreads) {
+    // TODO
+  }
+
+  public void await() {
+    // TODO
+  }
+}

BarrierExample.java

@@ -1,11 +1,9 @@
-import java.util.concurrent.CyclicBarrier;
-
 public class BarrierExample {
 
   public static void main(String args[]){
     int numThreads = 10;
 
-    final CyclicBarrier b = new CyclicBarrier(numThreads);
+    final Barrier b = new Barrier(numThreads);
 
     for(int i=0; i<numThreads; i++) {
       new Thread(new Worker(b)).start();

Worker.java

@@ -1,10 +1,7 @@
-import java.util.concurrent.CyclicBarrier;
-import java.util.concurrent.BrokenBarrierException;
-
 public class Worker implements Runnable {
 
-    private CyclicBarrier barrier;
-    public Worker(CyclicBarrier barrier) {
+    private Barrier barrier;
+    public Worker(Barrier barrier) {
         this.barrier = barrier;
     }
 
@@ -13,17 +10,11 @@ public void log(String message) {
     }
 
     public void run() {
-        try {
-            log("running");
-            log("this should happen before reaching the barrier");
+        log("running");
+        log("this should happen before reaching the barrier");
 
-            barrier.await();
-            log("this should happen after the barrier");
-        } catch (InterruptedException ex) {
-            log("damn I hate interrupts! Committing suicide: " + ex);
-        } catch (BrokenBarrierException ex) {
-            log("damn, the dam burst: " + ex);
-        }
+        barrier.await();
+        log("this should happen after the barrier");
     }
 
 }