Difference between Thread(method) and Thread(new ParameterizedThreadStart(method))

// Global variables
pthread_mutex_t gMutex = PTHREAD_MUTEX_INITIALIZER;
void (*gFuncPtr)(void*);
void *gFuncArg;

// Your program's main loop in the main thread
while(programIsRunning())
{
    // If we have a function to call this frame, call it, then do the rest of
    // our main loop processing
    void (*funcPtr)(void*);
    void *funcArg;

    pthread_mutex_lock(&gMutex);
    funcPtr = gFuncPtr;
    funcArg = gFuncArg;
    gFuncPtr = NULL;
    pthread_mutex_unlock(&gMutex);

    if(funcPtr != NULL)
        (*funcPtr)(funcArg);

    // Rest of main loop
    ...
}

// Call this function from another thread to have the given function called on
// the main thread.  Note that this only lets you call ONE function per main
// loop iteration; it is left as an exercise to the reader to let you call as
// many functions as you want.  Hint: use a linked list instead of a single
// (function, argument) pair.
void CallFunctionOnMainThread(void (*funcPtr)(void*), void *funcArg)
{
    pthread_mutex_lock(&gMutex);
    gFuncPtr = funcPtr;
    gFuncArg = funcArg;
    pthread_mutex_unlock(&gMutex);
}

for(Thread t : TCreate){ //Consider naming variables with initial lowercase
   t.join();
//Should be called after it's been started but not until you have started all of them
}
//Execution resumes here when all spawned threads have completed their task.

public class FlashThread implements Runnable {
  private JLabel temp;
  Thread thread;
  Color randColor;

  public FlashThread(JLabel toFlash) {
    temp = toFlash;
    thread = new Thread(this);
    thread.start();
  }

  public void run() {
    final Random r = new Random();
    while (true) {
        SwingUtilities.invokeAndWait(new Runnable(){
           public void run() {
              // this will be executed in the EDT
              temp.setForeground(new Color(r.nextInt(246) + 10,
                r.nextInt(246) + 10, r.nextInt(246) + 10));
              // don't perform long running tasks in the EDT or sleep
              // this would lead to non-responding user interfaces
           }
        });
        // Let our create thread sleep
        try {
            Thread.sleep(r.nextInt(500));
        } catch (InterruptedException e) {
        }
    }
  }
}