如何停止程序直到满足某个条件？

Question

a question:

the main program is executed in the main thread. An object of class Timer (swing) generates an event every 30 seconds.

As a result of this, the handler of this event is launched (in a parallel thread).

I need to stop the main thread from executing while the event handler will execute.

Those. as soon as the timer handler starts executing, the main program should stop (it has a pause).

And as soon as the timer handler completes its work, the main program should continue its work.

Tell me, with what help is it more convenient and more correct to solve this problem?

Answer 1

You can block your Mainthread by calling: wait() then after your other thread finished you can call notify() to continue the mainthread.