“implements Runnable” vs. “extends Thread” From what time I've spent with threads in Java, I've found these two ways to write threads: With implements Runnable: public class MyRunnable implements Runnable { public void run() { //Code } } //Started with a "new Thread(new MyRunnable()).start()" call Or, with extends Thread: public class MyThread extends Thread { public MyThread() { super("MyThread"); } public void run() { //Code } } //Started with a "new MyThread().start()" call Is there any significant difference in these two blocks of code ?