Report.md

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+## start() vs run()
+**Q1**
+**the output:**
+Calling run()
+Running in: main
+Calling start()
+Running in: Thread-2
+
+**answer to why:**  run() is executed by main thread although start() is executed by thread object that been created.
+
+**Q2**
+the difference between these two, is that when a thread (which has been created as an object) calls run(), couldn't execute it. So the method will be executed by the thread that created t1.
+But by calling start(), you wouldn't see this behavior and method will be executed by thread that been created as t2.
+
+## Deamon Threads
+**Q1**
+**the output:**
+Main thread ends.
+Daemon thread running...
+
+**answer to why:**  Main thread executes faster than deamon thread and exits the program so it doesn't let deamon thread execute properly.
+
+**Q2**
+the thread will execute properly and we'll see "Daemon thread running..." prints for 20 times after printing "Main thread ends.".
+
+**Q3**
+for example one of use cases is Logging and Auditing Services. Daemon threads can be used to log background activities continuously.
+
+## A shorter way to create threads
+**Q1**
+**the output:** Thread is running using a ...!
+
+**Q2**
+Java Lambda
+
+**Q3**
+it is the easiest way to create a thread. All three ways do the same execution. But with different usages.
+
+
+