In this chapter, we will cover the following topics:

• Using immutable objects when possible
• Avoiding deadlocks by ordering locks
• Using atomic variables instead of synchronization
• Holding locks for as short time as possible
• Delegating the management of threads to executors
• Using concurrent data structures instead of programming yourselves
• Taking precautions using lazy initialization
• Using the fork/join framework instead of executors
• Avoiding the use of blocking operations inside a lock
• Avoiding the use of deprecated methods
• Using executors instead of thread groups
• Using streams to process big data sets
• Other tips and tricks