• Creating threads
• Thread lifecycle
• sleep and join

• Thread: Unit of execution
• Runnable: Functional interface for thread task
• sleep/join: Control thread timing and ordering

1. ThreadDemo.java - Basic thread example
2. ExtendingThreadDemo.java - Create a thread by extending Thread
3. RunnableThreadDemo.java - Create a thread by implementing Runnable
4. SleepJoinDemo.java - Demonstrates sleep and join

1. Compile: javac *.java
2. Run: java ThreadDemo (or any of the other classes)

1. Create a thread using both approaches
2. Use sleep to simulate work
3. Use join to wait for completion

Next Day: Day 35 - Thread Synchronization