This project contains examples, tests, and benchmarks for my YouTube series on Effective Java, Third Edition. The tests can be run with mvn test or any IDE with JUnit 5 integration. To run the benchmarks:

mvn package
java -jar target/benchmarks.jar

Related links:

• affiliate links to Effective Java, Third Edition:
  • InformIT (the publisher)
  • Amazon USA
  • Amazon Germany
• visit codefx.org for links to my blog, Twitter, Twitch, and online courses on Java

Creating and destroying objects

• Item 1: Consider static factory methods instead of constructors - examples
• Item 2: Consider a builder when faced with many constructor parameters - examples
• Items 3-5 - examples:
  • Enforce the singleton property with a private constructor or an enum type
  • Enforce noninstantiability with a private constructor
  • Prefer dependency injection to hardwiring resources
• Item 6: Avoid creating unnecessary objects - benchmark

Methods

• Item 50: Make defensive copies when needed - example and tests