minor typo fixed

Ram swaroop · Ram swaroop · commit a8441bb75515 · 2015-09-11T22:11:07.000+05:30
diff --git a/_posts/2015-08-24-threads.md b/_posts/2015-08-24-threads.md
@@ -16,12 +16,25 @@ In Java, there is one thread per call stack or you can say, one call stack per t
 threads in your program, threads are back there running. The main() method, that starts the whole ball rolling, runs in
 one thread, called (surprisingly) the main thread.
 
-### Two ways to create a Thread in Java
+### Create a Thread in Java
+
+Either of the 2 ways:
 
 * Extend the `java.lang.Thread` class
 * Implement the `Runnable` interface
 
+Though extending the `Thread` class is simple, in real life applications implementing the `Runnable` interface is
+the preferred way of creating threads. It's usually not a good OO practice to extend `Thread` because sub-classing 
+should be reserved for specialized versions of more general superclasses. 
+
+So the only time it really makes sense (from an OO perspective) to extend `Thread` is when you have a more specialized
+version of a Thread class. In other words, because you have more specialized thread-specific behavior. And if you just
+want a job to be done by a thread then you should design a class that implements the Runnable interface, which also 
+leaves your class free to extend some other class.
+
+### Define a Thread
 
+* 
 
 
 
