Execution order of multiple threads

Question

Let\'s say we have this scenario:

class Stack{

public void main{

ChildThread1 t1 = new ChildThread1;
ChildThread1 t2 = new ChildThread1;
ChildThread1 t3 =          


        

Answer 1

So am I right to assume that this weird order of prints is because start() does not guarantee order of execution?

Yes. You are right.

Will this reason also apply to 'all threads are ready' problem?

Yes. Right again. Your SOP is run by main thread. So, it's possible that t1 can print something before main gets chance to execute it's SOP.