ESC 262 Object oriented Design & Programming II Lab 09 a Java Threads INTRODUCTION The purpose of this laboratory work is to gain the first experience in threads in Java and threads synchronization in Java. For this lab you will use Bluel in Windows environment. Initial variants of the programs are given in a zip file. Download the .zip file and unzip it in jou working directory. Cpen relevant projects for the experiments Starting with a very simple Java program, a student will study its operation in the following modes: (a) a program, consisting of a main and two additional threads that access a shared object (two variants using inheritance and implementing runable interface) and threads using oin method simulate traditionalprogamming a program to synchronize three threads a main, or primary thread and two child threads in case the shared object is definedby the use user implemented objects can be changed to be ready for mutithreaded applications vs. library classes can not be changed) using synchronized methods (c) a program to synchronize three threads a main, or primary thread and two child threads in case the shared object is defined by the user using synchronized regions allows to synchronize on this part of the code, that access the shared resource) (d) a program to synchronize three threads a main, or primary thread and two child threads in case the stared object is defined by others (library using synchronized regions