add TestThreads.java

classpath/TestThreads.java

@@ -0,0 +1,45 @@
+public class TestThreads {
+
+  public static void main(String[] args) {
+    TestThreads test = new TestThreads();
+    Thread th = new Thread(test);
+
+    try {
+      synchronized (test) {
+        th.start();
+        test.wait();
+      }
+    } catch (Throwable e) {
+      e.printStackTrace();
+    }
+
+    System.out.println("finished");
+  }
+
+  public void run() {
+    synchronized (this) {
+      int i = 0;
+      try {
+        System.out.println("I'm running in a seperate thread!");
+
+        final int arrayCount = 64;
+        final int arraySize = 4;
+        System.out.println("Allocating and discarding " + arrayCount +
+                           " arrays of " + arraySize + "MB each");
+        for (; i < arrayCount; ++i) {
+          byte[] array = new byte[arraySize * 1024 * 1024];
+        }
+
+        long nap = 5;
+        System.out.println("sleeping for " + nap + " seconds");
+        Thread.sleep(nap * 1000);
+      } catch (Throwable e) {
+        System.err.println("caught something in second thread after " + i +
+                           " iterations");
+        e.printStackTrace();
+      } finally {
+        notifyAll();
+      }
+    }
+  }
+}