1-qprocessThread 
 2-qprocessThreadTwo

Then in main class I have create two object from above thread classes like below :

    qprocessThread mythread;
    qprocessThreadTwo mythreadtwo;

My question is that, how can run two code line below in the same time or synchronize ?

mythread.initialize(File);
mythreadtwo.initialize(File);

I want to both of lines, run or start in the same time. How can I do this???