Multi-threading
- Write a program in java that creates 3 Threads i.e Main, Thread1 and Thread2. Print execution countdown messages for Thread 1 and Thread 2, also make Thread 1 and Thread 2 sleep for 1 second. Finally Main thread should end it's execution after Thread2 and Thread1 finish their execution. Limitations: You can not use the "sleep()" method for the "main" thread.